Low carbon steel pipe with ceramic

Low carbon steel pipe with ceramic with conventional steel, wear-resistant alloy steel pipe, cast stone and plastic pipe, steel pipe and other rubber has the essential difference.

Ceramic pipe is steel outer and inner corundum. Corundum layer Vickers hardness 1100-1500 (Rockwell hardness of 90-98), the equivalent of tungsten-cobalt hard gold. High wear resistance than carbon steel pipe more than 20 times, it is much more superior than the usual bonding together corundum wheel performance. Now it is still a variety of corundum grinding wheel grinder cut hardened steel main wheel. Ceramic pipe corundum corundum wheel wear layer can be put away. Wear resistant ceramic pipe corundum layer may be formed mainly by a few millimeters thick, a Mohs hardness of 9, second only to diamond and silicon carbide, all oxides, which is the highest hardness. ¯ pipe and the component is only about 20% alumina, most of SiO2, SiO2 Mohs hardness of 7. Rare high chromium wear-resistant alloy tube or a Vickers hardness of about 400 (Rockwell hardness of about 50); lack of corundum hardness third. So wear-resistant alloy steel pipe, cast pipe wear both by composition and organization, but also by the thickness of the ceramic pipe abrasion resistance compared to them, has been a qualitative leap.

Low carbon steel pipe with ceramic is the use of SHS – centrifugal method of manufacturing the ceramic pipe corundum melting point 2045 ℃, corundum layer and the steel layer structure due to process special reasons, the stress field is also special. Ceramic layer at room temperature compressive stress, steel layer subjected to tensile stress, the two opposites, into a balanced whole. Only the temperature rises above 400 ℃, since the thermal expansion coefficient between the two, the new stress field generated by the thermal expansion of the ceramic pipe and the stress field in the presence of the original offset each other, so that both the ceramic layer and the steel layer is free equilibrium. When the temperature rises to 900 ℃ to ceramic-lined steel pipe into the water Ling, repeated immersion times, the composite layer does not crack or crack, showing the common ceramic unparalleled thermal shock resistance. This performance would be useful in engineering construction, because of its outer layer of steel, coupled with the inner temperature is not cracked in the construction of the flanges, the purge port, explosion doors can be welded directly to the welding method can also be used connection, than wear and cast stone pipe, wear resistant steel pipe, rare earth abrasion steel, bi-metal composite pipe, steel pipe, steel rubber pipe in construction can not easily welded or soldered better. Ceramic-lined steel pipe good resistance to mechanical shock resistance, while during transportation, installation and beat two weight bracket bent, not broken off the composite layer.

Low carbon steel pipe with ceramic with high wear resistance, anti-erosion ability of the fluid. In a wind pipe, pipe wear fastest, ceramic-lined steel pipe elbow abrasion wear resistance than thick steel elbow increased more than five times. In practice, the use of ceramic-lined steel pipe 1-2 years after opening observe and measure, the composite layer no significant wear or fall off, the unit of the same size and length of the pipeline, the ceramic-lined steel pipe weighs only wear resistant steel pipe or bimetallic composite pipe is about 1/2, its construction cost is per meter 30-40% lower, only cast stone weight steel pipe and rare wearable 2/5 or so per meter lower than 20% of the project cost. Ceramic-lined steel pipe corrosion or high temperatures in use, its price is only stainless steel pipe, a fraction of the nickel-titanium tubes.

Features of Low carbon steel pipe with ceramic

1. Good abrasion resistance
Ceramic composite pipe due to the inner lining of corundum ceramic (A-al2o3), the Mo hardness of up to 9.0 of the equivalent HRC90. Therefore, the metallurgical, electric power, mining, coal and other industries to transport the grinding medium has high wear resistance. The industrial operation confirms that its wear-resisting life is 10 times times or even dozens of times times that of quenched steel.

2. Small Operation resistance
SHS Ceramic Composite pipe Because of the smooth inner surface, and never rust, nor like the seamless steel tube inside the surface has convex spiral. After testing the internal surface roughness and water resistance characteristics of the testing units, the smoothness of the inner surface is superior to any metal pipe, the resistance coefficient is 0.0193, slightly lower than the seamless pipe. Therefore, the tube has the characteristics of small operating resistance and can reduce the operating cost.

3, corrosion resistance, anti-scaling
Because the steel ceramic layer is (A-al2o3), it is a neutral trait. Therefore, with acid and alkali resistance and seawater corrosion, and at the same time with anti-scaling and other characteristics.

4. High temperature resistance and heat-resisting performance
The corundum ceramic (A-al2o3) is a single stable crystalline structure. Therefore, the composite pipe can operate in the -50–700℃ temperature range for a long time. The material linear expansion coefficient is 6-8×10-6/0c, about 1/2 of the steel pipe. The material has good thermal stability.

5. Low construction cost
The ceramic composite pipe is light in weight and suitable for price. than the same inner diameter cast stone pipe weight 50% lighter than the wear-resistant alloy tube weight light 20–30%, and wear-resistant, corrosion-resistant, because of long service life, thereby supporting the hanger costs, removal costs, installation costs and operating costs reduced. Compared with the engineering budget and engineering practice of the Design Institute and Construction Unit, the cost of the pipe project is equal to that of cast stone, and the project cost is about 20% lower than that of wear-resisting alloy pipe.

6. Convenient installation and construction
Because of the light weight of the tube, and good welding performance. Therefore, welding, flange, rapid connection, such as the installation of convenient construction, and can reduce installation costs.

Iv. Other Knowledge
Ceramic steel pipe and traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe, as well as steel plastic, steel rubber pipe, etc. have essential differences. The outer layer of ceramic steel pipe is steel, and the inner is corundum. The Vickers hardness of corundum layer is as high as 100-1500 (Rockwell hardness is 90-98), which is equivalent to tungsten cobalt hard gold. The wear resistance is more than 20 times times higher than carbon steel pipe, it is superior to the corundum grinding wheel which is usually bonded. Now the corundum grinding wheel is still the main grinding wheel of the grinding mill. The corundum layer in the ceramic steel tube can wear away the corundum grinding wheel. The abrasion resistance of ceramic steel tube is mainly by the inner layer of several millimeters thick corundum layer, its Morse hardness is 9, second only to diamond and SIC, in all oxides, its hardness is the highest.

The inner liner ceramic wear-resisting steel pipe is made by SHS high temperature synthesis-centrifugal method, the melting point of corundum in ceramic steel pipe is 2045 ℃, the corundum layer and steel layer have special structure and stress field because of the process reason. Under normal temperature, the compressive stress of the ceramic layer, the tensile stress of the steel layer, the two opposites, into a balanced whole. Only when the temperature rises to more than 400 ℃, because the thermal expansion coefficient is different, the new stress field produced by the thermal expansion and the original stress field in the ceramic steel pipe cancel each other, so that both the ceramic layer and the steel layer are in a free equilibrium state. When the temperature rises to 900 ℃ the inner liner ceramic wear-resistant steel pipe into the water, repeatedly soaked repeatedly, the composite layer does not crack or cracking, showing the incomparable thermal shock resistance of ordinary ceramics. This performance is of great use in construction, because the outer layer is steel, in addition to heating the inner layer does not crack, in the construction, the flange, blowing, explosion-proof doors can be welded, but also can be directly welded to connect, which is more than wear-resistant cast stone pipe, wear-resistant cast steel pipe, Rare-earth wear-resistant steel pipe, bimetal composite pipe, steel pipe, Steel rubber pipe In the construction is not easy to weld or welding more than a chip. Internal liner ceramic Wear-resistant steel pipe resistance to mechanical impact is good, in transport, installation beat and the two support between the weight bending deformation, the composite layer does not break off.

At present, the practice of dozens of thermal power plants shows that the wear resistance of the inner-lined ceramic steel tube is high, and the resistance to fluid scouring is strong. In the first air duct, the bending pipe wear the most quickly, the wear resistance of the inner liner ceramic wear-resisting steel pipe is more than 5 times times higher than that of the thick wall wear-resisting cast steel elbow.

In practice, the inner liner ceramic wear-resistant steel pipe after 1-2 years to open observation and measurement, the composite layer has no obvious wear or fall off, in the same size and unit length of the pipeline, the internal liner ceramic wear-resistant steel tube weight only wear-resistant cast steel pipe or bimetal composite pipe of about 1/2, the cost of each of the meters reduced 30–40%, Only cast stone pipe and Rare-earth wear-resistant steel pipe weight of about 2/5, per meter project cost reduction of more than 20%. In the corrosive or high-temperature place to use the liner ceramic wear-resistant steel pipe, its price is only a stainless steel tube, nickel-titanium tube of a fraction of.
Fluid pipeline transportation is not only used in the power industry, but also in metallurgy, coal, petroleum, chemical, building materials, machinery and other industries. When the pipe is transported with large grinding material (such as ash residue, pulverized coal, mineral fine powder, tailings cement, etc., there is a problem of fast abrasion of pipe, especially the bending pipe wear fast; when conveying a strong corrosive gas, liquid or solid in the pipeline, there is a problem that the pipeline is corroded and destroyed quickly. When conveying the material with high temperature in the pipeline, there are some problems such as the price of heat-resisting steel pipe is very expensive. The internal liner ceramic wear-resistant steel pipe market, these problems are solved.

Ceramic Lining Pipe and Elbow

Ceramic Lining Pipe, Ceramic Lining Elbow, Ceramic Lined Pipe, Ceramic Lined Elbow

Ceramic Lining Pipe and Elbow have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe and gives a very smooth surface. Ceramics with very low friction factor at low impingement angles decreases the abrasion of materials maximally. Its low density makes it easy to carry and install. Furthermore, its diamond-like hardness, fine grain structure and superior mechanical strength are the unique features that make it a wide range of demanding applications, such as coal preparation, power generation, iron and steelmaking, cement, asphalt, dredging, mining and mineral processing, oil and gas drilling.

Metals have good ductility but poor resistance to abrasion – which means that abrasion prevention is required when metal pipes are used in high-temperature fluid catalyst service. On the other hand, ceramics possess great hardness and abrasion resistance, but they are brittle. Metal Ceramic double pipe is a hybrid pipe using metal as an outer pipe and a ceramic material for inner pipe segments, applied together to utilize the two materials’ advantages. Hence excellent wear-resistance and good corrosion resistance of the ceramics and high strength and toughness of metal can be well combined to get a comprehensive advantage of wear-resistance, corrosion-resistance and anti-scaling. They are suitable for applications in heavy wear working conditions.

Ceramics are among the hardest materials available and provide ultimate wear resistance in piping. In high wear applications, ceramic lined pipes have been demonstrated to be cost-effective by increasing service life and reducing maintenance costs. Sunny Steel supply ceramic lined abrasion resistant steel pipes to your custom dimensions and budget. Our ceramic linings are the highest quality materials available to ensure that we provide the most cost-effective solutions for our clients.

The Ceramic Tiles could protect Industrial Components against abrasion, impact wear and high temperature of above 1000celsius degree   Standard Flat Tiles of Square & Rectangular Shape having thickness of 6 to 50 mm, with or without central hole are available.

Materials: seamless mild steel pipe plus 95% alumina ceramics for liner

Designed pressure: >= 0.35Mpa
Normal operation velocity: 20-35m/s
Normal operation temperature: -50-800
Running medium: mixture of air and powder
Size of the pipe: the inner diameter is between 1 to 120 or even lager

Industries Served:
Power Industry (Coal fired & Biomass)
Coal Mine and Preparation Plants
Cement & Asphalt Processing
Pulp & Paper Mills
Water & Waste Water Treatment
Mineral Processing
Steel Industry

ASTM A335 P91 for High Temperature Service

ASTM A335 Grade P91 pipe is premium grade pipe applied for high pressure boiler. And P91 pipe is ideal when it comes to bending, flanging or when it is used in similar operations such as welding. The material of steel should stick to the composition of chemicals, tensile property and the requirements of hardness.

ASTM A335 P91 alloy steel pipe and high pressure boiler pipes are the two variants available and the range is dependent based on the size, which is solely based on the usage. The length of the pipe will be subject to hydrostatic test and there will also be a non-destructive examination based on the specifications.

ASTM A335 P91 high pressure semaless boiler pipe, The range of ASTM A335 P91 seamless alloy steel pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

• Outer Dimensions: 19.05mm – 114.3mm
• Wall Thickness: 2.0mm – 14 mm
• Length: max 16000mm

Steel grade: ASTM A335 P91

Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe shall be examined by a non-destructive examination method in accordance to the required practices.

The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented.Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

Packing:

Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.

Inspection and Test:

Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.

Surface treatment:

Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.
Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles or as requested.

ASTM A335 P91 Chemical Compositions(%)

Compositions	Data
UNS Designa-tion	K91560
Carbon(max.)	0.08-0.12
Manganese	0.30-0.60
Phosphorus(max.)	0.025
Silicon(max.)	0.50
Chromium	4.00-6.00
Molybdenum	0.45-0.65
Other Elements	…

Mechanical properties for ASTM A335 P91

Properties	Data
Tensile strength, min, (MPa)	415 Mpa
Yield strength, min, (MPa)	205 Mpa
Elongation, min, (%), L/T	30/20

Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.

Heat Treatment

• A / N+T
• N+T / Q+T
• N+T

Mechanical Tests Specified

• Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
• For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested.
• For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe.

Notes for Bend Test:

• For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness ratio is 7.0 or less shall be subjected to the bend test instead of the flattening test.
• Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test in place of the flattening test subject to the approval of the purchaser.
• The bend test specimens shall be bent at room temperature through 180 without cracking on the outside of the bent portion.

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Advantages of P91

SA 335 P91 or SA 213 T91 is the ultimate Ferrite Alloy steel that meets the extensive condition. Normally, the materials are used in many numbers of successful power plant service. Metal is also called as the 9 Cr 1 Mo steel with more composition. T22 or P22 grade is its predecessor but the Grade 91 mainly exhibits with the higher strength of temperature in the range of about 600 °C. Oxidation temperature mainly limits to higher features so it also effectively allows power plant designers to extensively engineer the components. In fact, it also effectively allows power plant designers for easily engineering the components with superheater coils, steam piping and headers as it mainly has less thickness. The metal also contributes higher thermal fatigue life that is ten times stronger when compared to other metals in much excellence. It also effectively allows to increase operating temperature at the higher level and increased efficiency at the power plant.

Normally, Alloy steel is not tolerant based on variations in the microstructure when compared to the P22 grade and other grades. Alloy steel is available in the difference that mainly contains the amount of carbon and iron. These are like the carbon steel along with it has other elements. Elements used in the Alloy steel mainly add manganese, silicon, chromium, vanadium, boron, and nickel. With more number of value composition about elements that are presented based on different ranges with more properties in the alloy steel. Normally, usage or application of alloy steel is to acquire the well-determined physical properties of the steel. The alloy steel falls into 2 types that include low alloy steels and high alloy steels. The Alloy steel is considered as the high alloy properties with the amount of the included elements belongs to the level of 8%. When these elements are combined with the range that is perforated in the below 8% value then it is called as low alloy steel. Low alloy steel is only used in most of the factories.

Alloy Steel P91 is manufactured based on precision and strict industry standard that mainly follows the heat treatment requirements. It is also reported that the failures of base materials are completely based on the different stages of usage. Alloy Steel P91 mainly used for different application with the extensive precision manufactured that are also complete reinstate with the microstructure to the high excellence. Alloy Steel P91 has properties much lower when compared to the predecessor P22. The effect of variation based on treatment on properties would be quite easier to analyze but it is not in the suitable for P91. Fabrication with construction phase mainly affects microstructure with reversed by precise heat treatment. In fact, it also brings microstructure back to original size and shape to the excellence. Alloy Steel P91 is decided based on tanker linings with complete prevalent consumption protection with high return quality and it also efficiently adds structures. With the variety of welding consumables along other national specifications enabled, P91 materials are widely used across for different aspects.

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ASTM A335 P91 pipe Stocks

The alloying elements in ASTM A335 P91 Alloy steel Seamless Pipes tend to make either compounds or carbides or solid solutions.

ASTM A335 P91 is the part of ASTM A335, The pipe shall be suitable for bending, flanging, and similar forming operations, and for fusion welding. The steel material shall conform to chemical composition, tensile property, and hardness requirements.

The range of ASTM A335 P91 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practice.

Alumina ceramic lined pipe

High alumina ceramic linings are curved, piping and elbows are reliable, maintain close manufacturing tolerances, and are ready to install, thus facilitating quick replacement and free operation for long lasting trouble.

Application

The wear resistant pipe is an excellent wear protection pipe used in all industry where need wear resistance. The high alumina ceramics are installed onto the internal surface of the pipe properly by welding, pasting or inter-locking system. with the brilliant properties of resistance to wear , corrosion and heat, the pipe is widely used in materials handing of coal industry, electric power, metallurgy, mining and chemical industry and it is one ideal wear resistant pipe.

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White 92% high ceramic alumina lined wear resistant bend pipe is made through self-propagating high-temperature synthesis (SHS) technique. The pipe consists of three layers: smooth ceramic lining (compact corundum), ceramic and metal transition layer and the outer steel pipe.

The combination of high rigidity of ceramic and high elasticity of steel gives the pipe unmatchable features as an abrasion resistant, heat resistant and corrosion resistant material for use in the fields of power generation, metallurgy, mining, and chemical industry etc.. It has many advantages over steel pipes, cast stone pipes, and steel-plastic compound pipes.

The ceramic sleeve lined pipe has a smooth inner wall, excellent tightness as well as good wear and chemical resistance ability.

Alumina ceramic sleeve lined pipe with flange

Ceramic sleeve lined pipe with flange

Ceramic Tile Lined Bend

Alumina ceramic sleeves lined pipe

Alumina ceramic sleeves lined pipe
Alumina ceramic sleeve lined pipe export to australia

Alumina ceramic sleeve lined pipe

Ceramic liner equipment, including ceramic wire tube, ceramic liner elbow, ceramic liner cone, ceramic turret, ceramic-lined hydrocyclone, ceramic liner, ceramic lined valves to help users obtain the maximum efficiency of the equipment.

Regular requirements

Normal diameter	20-800mm
Thickness of liner	4-50mm
Thickness of steel pipe	4-8mm

Benefits

• Good abrasion resistance: that alumina ceramic abrasion resistance is 260 times that of manganese steel and 170 times that of high chromium iron.
• Great hardness: the Mohs hardness is 9 which is only inferior to diamond but fa exceeding wear resistant steel and stainless steel.
• Light weight: density is 3.6 g/cm3 is only 50% that of steel, which highly lowers the dead weight of the pipe.
• Convenient connection: apply flange connection in principle, but we also use quick connector according to the requirements from customers.

Tubes Erosion Shields

Tubes Erosion Shields are used to reduce excess wear of boiler tubes within the extreme conditions prevalent inside a fossil fuel fired boiler, Sunny Steel is able to manufacture and supply erosion shield solutions to protect and reduce wear in all applicable boiler related situations.

Boiler Tube Shields are designed to eliminate major maintenance and downtime costs from boiler and condenser tube failure.

Advantages

Tube Shields are custom made to fit perfectly to straight sections, curved sections and even finned and specialised tubing.

Boiler Tubes Erosion Shields, also known as anti-corrosion Shields, anti-wear plate, anti-wear protection Shields, anti-wear cover plate, anti-corrosion cover plate, boiler climbing pipe, anti-wear pressure plate, etc. , which are used in combination with snap rings.

Boiler Tubes Erosion Shields are produced using a high-pressure press and professional mold pressing. The production time is short, the welding performance is good, the welding should not fall off, the surface is smooth, and the appearance is beautiful. Boiler Tubes Erosion Shields with bends are formed by pressing on a press or bending with a special abrasive on a tube bender.

Service life

The service life of Boiler Tubes Erosion Shields is different in different types of boilers and different use parts. The normal service life is a period of overhaul (3-5 years) for the boiler. Generally, some boilers will be replaced or retrofitted every time the boiler is overhauled. The main replacements are those of the Boiler Tubes Erosion Shields that are severely thinned and exceeded the standard; those that were not firmly detached during the boiler operation during the previous installation. According to the wear of the Boiler Tubes Erosion Shields during replacement, if the thickness is severely reduced, it needs to be replaced, the deformation is severe, and those that cannot protect the tube also need to be replaced. In addition, some boiler tubes are not equipped with Boiler Tubes Erosion Shields, but during the boiler inspection, it is found that the tubes have a tendency of wear and thinning. Generally, Boiler Tubes Erosion Shields are also installed to prevent further wear of the tubes and cause serious consequences such as boiler explosion.

On the heating surface of superheater and economizer tube bundle of the boiler, in order to prevent the pipe from being worn by high temperature flue gas washing, boiler tubes erosion shields are mostly arranged on the outer side of the pipe in the direction of flue gas flow. The elbow erosion shields solves the abrasion problems of water wall tubes, superheater tubes, economizer tubes and reheater tubes in the furnace, and provides guarantee for the long-term and reliable operation of CFB boiler. With the increase of CFB boiler products, the type and quantity of The elbow erosion shields will increase.

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Main material of tubes erosion shields

Different types of stainless steel are selected according to the specific conditions of different working conditions. Common materials are: TP321 (Cr18Ni9Ti), TP309S (Cr23Ni13), 1Cr20Ni14Si2, TP310S (Cr25Ni20), 1Cr25Ni20Si2, and some low temperature areas (such as low temperature superheater, low temperature reheater) are made of 1Cr13, 1Cr6Si2Mo and other materials.

The boiler was originally designed to be accurate. Different materials have different temperature resistance and mechanical strength. 1Cr13, 1Cr6Si2Mo generally has a temperature resistance of 600 ℃ or less.

Material（Grade）	Temperature resistance	Yield strength	Tensile strength	Elongation	HB	HRB	HV
1Cr18Ni9Ti	925 ℃	≥205MPa	≥520MPa	≥40%	≤187	≤90	≤200
Cr23Ni13	1095 ℃	≥205MPa	≥520MPa	≥40%	≤187	≤90	≤200
1Cr20Ni14Si2	1095 ℃	—	≥590MPa	≥40%	—	—	—
Cr25Ni20	1150 ℃	≥205MPa	≥520MPa	≥40%	≤187	≤90	≤200
1Cr25Ni20Si2	1150 ℃	—	≥540MPa	≥35%	—	—	—

We can also supply Boiler Tubes Erosion Shields of other materials.

304 stainless steel Erosion Shields

Grade 304 stainless steel is the most versatile and the most widely used of all stainless steels.

309 stainless steel Erosion Shields

CS 309 is a highly alloyed austenitic stainless steel used for its excellent oxidation resistance, high temperature strength and creep resistance.

310S stainless steel Erosion Shields

Grade 310S is a lower carbon version, less prone to embrittlement and sensitisation in service.

316L anti corrosion and anti wear steel erosion shields

Grade 316 is the standard molybdenum-bearing grade, second in importance to 304 amongst the austenitic stainless steels. The molybdenum gives 316 better overall corrosion resistant properties than Grade 304, particularly higher resistance to pitting and crevice corrosion in chloride environments.

Custom tube shields

Custom tube shields are designed to minimize tube failure in highly abrasive or corrosive areas. Our many styles insure that you’ll be able to choose the most appropriate design for your application, providing an inexpensive way to prolong tube life.

Advanced Manufacturing Facilities Mean Fast Response

Tube shields from us are manufactured to exacting standards. Advanced equipment and material handling capabilities permit us to offer the fastest turnaround times anywhere.

Stainless Straight and Bend Type Boiler tube Protection Erosion Shield Eco tube shield

Custom Straight Shields

Straight Shields are available with angles of wrap between 90º to 240º and can be manufactured with straight ends, belled ends and flared legs. Complete coverage is available by overlapping shields.

Custom curved shields

Curved Shields can be manufactured to cover both outside and inside curves of tubing.

Shapes and specifications of Tubes Erosion Shields

The cross-sectional shape of Boiler Tubes Erosion Shields is mostly semi-circular (180 degrees), and there are also 120-160 degrees. It is mainly used on finned tubes (water-cooled walls); Boiler Tubes Erosion Shields are divided into direct wear-resistant shields, In-curve anti-wear shields, outer-curve anti-wear shields, side-curve anti-wear shields, S-curve anti-wear shields, etc.

Outside of bend

Inside of bend

S-shape Outside of bend

Straight tubes erosion shields

The length of the straight anti-wear shields ranges from 20mm to 3000mm, and the general length of 1000-2000mm is commonly used. The anti-wear shields with bends generally requires a processing drawing and the following parameters should be on the drawing: outer diameter of the pipe used, bending of the pipe Radius R (to the center of the pipe), the degree of bending angle, and the length of the straight sections on both sides of the arc segment of the wear-resistant shields.

The most basic parameter of Boiler Tubes Erosion Shields is the outer diameter of the tube used (that is, the inner diameter of Boiler Tubes Erosion Shields). The main specifications of the tube are: 32, 38, 42, 44.5, 48, 51, 57, 60, 63.5 , 76, 89mm, etc .; The inner diameter of the Boiler Tubes Erosion Shields is usually 1-3mm larger than the outer diameter of the tube used, depending on the actual requirements.

Boiler Tubes Erosion Shields

Boiler Tubes Erosion Shields, also known as anti-corrosion Shields, anti-wear plate, anti-wear protection Shields, anti-wear cover plate, anti-corrosion cover plate, boiler climbing pipe, anti-wear pressure plate, etc. , which are used in combination with snap rings.

Processing thickness of Boiler Tubes Erosion Shields

Boiler Tubes Erosion Shields are processed in thicknesses of 2mm, 3mm, 4mm, and 5mm. Different thickness is adopted according to the wear severity and the need of heat conduction.

Boiler Tubes Erosion Shields are produced using a high-pressure press and professional mold pressing. The production time is short, the welding performance is good, the welding should not fall off, the surface is smooth, and the appearance is beautiful. Boiler Tubes Erosion Shields with bends are formed by pressing on a press or bending with a special abrasive on a tube bender.

Boiler erssion shield for protection boiler tube

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Boiler Erosion Shields

Ash content, high furnace temperature, increased sootblower pressure and longer time between cleans – all these things result in the likelihood of greater erosion to boiler tubes.

In such cases, the most effective course of action is to shield the erosion prone tubes with boiler erosion shields. This alternative is far cheaper than actual replacement of damaged sections of boiler tube, to say nothing of the associated downtime and loss of generation capacity and revenue that occurs with a tube leak.

In addition to straight tube shields, which go over straight sections of boiler tube, we also make shields to cover bends and special shields for finned tubes.

The erosion shields can be made out of mild steel, chrome moly steel, stainless steel and exotic alloys such as Inconnel. The most popular materials and sizes are 3mm stainless steel grade 304 and 2mm stainless steel grade UNS S30815 (Sandvik grade 253MA). Our Bending uses certified material to A387 P11,P22 chrome moly and Australian Standard A240TP304, 316 and 309 stainless steel. Our shields can also be coated with a hard wearing chromium carbide coating for addtional wear resistance.

Snap rings for Tubes Erosion Shields

Snap rings are used in conjunction with Boiler Tubes Erosion Shields, which is a clip that easily installs Boiler Tubes Erosion Shields to the tube.

The snap ring and Boiler Tubes Erosion Shields are overlapped and welded, generally about 190-200 degrees Erosion Shields is a 180-degree semicircle), but also leave a welding position for easy welding and fixing. Generally, each piece of Boiler Tubes Erosion Shields needs to be equipped with 2-4 snap rings with a pitch of 200-500mm.

The anti-wear snap ring is also called clamp, buckle, tube clamp, etc.

The main role of the anti-wear tile snap ring: the role of fixing the anti-wear tile to avoid problems such as the anti-wear tile falling off during installation.

The types of common anti-wear tile rings can be divided into: U-shaped lap type snap ring, butt-type semicircular snap ring.

Install erosion shields with snap ring

The snap ring is a short section that is installed on the pipe in conjunction with the wear-resistant tile. Generally, it is welded to the wear-resistant tile by lap welding, that is, to cover the wear-resistant tile slightly, so it is larger than the wear-resistant tile. The opening arc is Around 190-200 degrees, the welding position needs to be set aside to facilitate welding and fixing. The width of the snap ring must not be less than 20mm.

The installation requirements of anti-friction tiles of different shapes are slightly different. Basically, each anti-friction tile is installed with not less than 2-4 snap rings. The snap ring and the anti-friction tile are welded together to prevent expansion due to heat. The tiles fall off, and the joints are required to be fully welded.

U-shaped snap ring

The inner diameter of the U-shaped snap ring is the outer diameter of the wear-resistant tile plus the thickness of the wear-resistant tile, and the length varies from 20mm to 70mm. It will be 5mm more in semicircle. The extra part during installation will hold the wear-resistant tile and then spot weld. Compared with the butt-type semicircular snap ring, it is stronger after holding the wear-resistant tile and welding.

C-shaped snap ring

C-shaped snap ring is the most common snap ring. Mainly based on the size of anti-friction tile, the diameter and thickness are similar to the matching anti-friction tile, and the length varies from 20mm to 70mm. It is mainly connected to the wear-resistant tile by spot welding when installing the wear-resistant tile, so as to fix and prevent the wear-resistant tile from falling off.

Custom snap ring

Custom snap rings are the recommended method for tube shield attachment.

• Style: Bull, Overlap, Wrap
• Tube Diameter: 0.500″ to 5.000″ (Tube OD is shield ID), XML
• Angle of Wrap: Maximum 240° XML
• Gauge: 7 to 24 XML
• Material: 304 SS, 316 SS, 309 SS, 310 SS, 430 SS, Inconel

All products are purchased to proprietary customized specifications as well as normal industry standards with supporting documentation.

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Application

Tubes Erosion Shields are mainly used on the windward side of the heating surface of the boiler, such as superheaters, reheaters, economizers, and water-cooled wall pipes.

The main role is to protect the heating surface of the boiler pipes, reduce pipeline wear, and increase the heating surface of the pipes.

Service life. In general, most of them are called “wear-resistant tile” and “wear-resistant cover plate”. Erosion Shields are special boiler accessories.

Generally, most of them are used in power station boilers, small boilers are used less, and some coal chemical industries will also use them.

F&Q:

Our understanding of and commitment to the steam and power generation business enables us to solve your boiler tube erosion or corrosion problems efficiently. Our technical staff can quickly recommend the proper material type and configuration to meet your needs…and can quote your outage delivery requirements on a month basis.

Do you accept a special order?

A: Yes, we do. We can manufacture all kinds of chemical equipments according to your technical drawings(Before you givethem to us, will sign the contract and confidentiality agreement with you. You don’t need to worry about that.)

Can you make a design for us?

A: Yes, we can. What we supply is not only product, but also solution and design. And if you make the product in our factory,the design will be free. If not, design fees will be charged accordingly.

Q: Do you provide after-sales service?

A: Yes, we do. This product is guaranteed up to one year from purchase unless manmade damage.If there is anything wrongwith product itself quality problem,we will change or repair it at our charge.If not, we will provide aftersales service at your charge.

Silicon carbide alloy ceramic wear tube

Reaction bonded SiC is made by infiltrating compacts made of mixtures of SiC and carbon with liquid silicon. The silicon reacts with the carbon forming more SiC which bonds the initial SiC particles.

Silicon carbide is formed in two ways, reaction bonding and sintering. Each forming method greatly affects the end microstructure.

Reaction bonded SiC is made by infiltrating compacts made of mixtures of SiC and carbon with liquid silicon. The silicon reacts with the carbon forming more SiC which bonds the initial SiC particles.

Sintered SiC is produced from pure SiC powder with non-oxide sintering aids. Conventional ceramic forming processes are used and the material is sintered in an inert atmosphere at temperatures up to 2000ºC or higher.

Both forms of silicon carbide (SiC) are highly wear resistant with good mechanical properties, including high temperature strength and thermal shock resistance. Our engineers are always available to best advise you on the strengths and weaknesses of each ceramic for your particular needs.

For further information on our silicon carbide and how this can be used for your product, contact us today.

The crystal structure of the SiC ceramic wear-resistant pipe is similar to that of the diamond tetrahedral structure. It is a compound composed mainly of covalent bonds. Its hardness is high (Mohs 9.3), its performance is stable, and its physical properties are similar to diamond. It is also known as emery. Black silicon carbide crystal Hardness is the second-order material for diamonds. It is mainly used for making abrasives and grinding wheels, and partly for the production of silicon carbide ceramics.

Silicon carbide properties

Silicon carbide (SiC), also known as carborundum, is a semiconductor containing silicon and carbon.

The characteristics of the elastic modulus and thermal expansion are given by the characteristics of the SiC crystal itself, and the thermal conductivity or thermal diffusivity of the silicon carbides tends to be substantially higher than those of the other structural ceramics. The combination of a high elastic modulus and moderate coefficient of thermal expansion makes the SiC susceptible to thermal shock damage. The resistance to thermal shock is significantly lower than that of silicon nitride, but higher than the structural zirconia ceramic. The behavior before thermal shock is also very dependent on the application. For example, very rapid temperature changes can lead to a preference for Si3N4 over SiC, while for moderate rates of temperature change the high thermal conductivity of SiC can lead to better performance.

Silicon carbide alloy ceramic pipe reducer

Silicon carbide alloy ceramic pipe elbow

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New multiphase silicon carbide ceramics

The new multi-phase silicon carbide ceramic is made of silicon carbide as the main raw material, through reasonable particle assembly, adding silicon powder, alumina powder and binder, and then kneading, molding, drying and high-temperature sintering. It has excellent properties such as high hardness, good wear resistance, thermal stability and chemical corrosion resistance, especially it is insensitive to abrasive angle of attack. The new multi-phase silicon carbide ceramic is affixed as an lining material or embedded in the surface of related equipment, which can greatly improve the wear and corrosion life of the equipment. The abrasion resistance of the wear-resistant particles is three times that of alumina (corundum) ceramics and five times that of high-alloy wear-resistant cast steel. Therefore, it is widely used in thermal power, coal, mining, metallurgy, chemical, cement, port and other fields, and is currently a cost-effective wear-resistant material.

Reinforced silicon carbide ceramic composite pipe

Structure: Silicon carbide ceramics are lined in ordinary carbon steel pipes to form silicon carbide/steel composite pipes. The inner lining silicon carbide adopts the unequal thickness eccentric circular structure type, that is, the outer side of the curved pipe and the lower half of the straight pipe are slightly thicker, so that the wear life of each part of the pipe is the same, and the waste is reduced. The outer side of the silicon carbide is wrapped with FRP to increase the overall strength level. The transition section can be made of ordinary carbon steel pipe or oxygen-aluminum composite wear-resistant steel pipe or flanged according to user requirements. Can be made into a straight tube or a shrimp waist bend.

Scope of application: Low-impact and strong abrasive wear such as conveying powder, block material and ash residue working at 450 °C and 1.0 Mpa.

Performance characteristics: The comprehensive performance is good, the silicon carbide ceramic has a very high wear resistance, and has certain impact resistance and adhesion performance after the outer glass fiber reinforced plastic. The use of steel pipe as the outer casing not only improves the mechanical strength and impact resistance of the pipe, but also facilitates installation and welding. The service life of the product is 3-5 times that of alloy cast steel pipe, cast stone pipe and alumina ceramic composite pipe, generally up to 60,000 hours, and has a very high performance price ratio.

Exponential parameters:

Item	Unit	Data
Max Temperature of Application	℃	1380℃
Density	G/cm3	＞3.02
Open Porosity	%	＜0.1
Bending Strength	Mpa	250 (20℃ )
MPa	280 (1200℃ )
Modulus of Elasticity	GPa	330 (20℃ )
GPa	300 ( 1200℃ )
Thermal Conductivity	W/m.k	45 (1200℃ )
Coefficient of Thermal Expansion	K-1×10-6	4.5
Moh’s Scale of Hardness		13
Acid Alkaline-proof		excellent

Features

Silicon carbide ceramic pipe is made of silicon carbide as the main raw material, adding a variety of chemical wear-resistant raw materials and antioxidants, effectively improving the wear resistance of the product to Si0. A high-performance silicon carbide product that is fired at a high temperature by making a high-temperature bonded phase.

Has the following characteristics:

• Stable size, deformation resistance and high temperature strength at high temperature;
• Resistance to thermal shock, abrasion and corrosion;
• Anti-oxidation, erosion resistance.

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Working condition of silicon carbide ceramic wear-resistant pipe

Typical silicon carbide characteristics include:

• Low density
• High strength
• Good high temperature strength (Reaction bonded)
• Oxidation resistance (Reaction bonded)
• Excellent thermal shock resistance
• High hardness and wear resistance
• Excellent chemical resistance
• Low thermal expansion and high thermal conductivity

Typical silicon carbide applications include:

They are used more for operation with wear at low temperature than for high temperature behavior. SiC applications are such as sandblasting injectors, automotive water pump seals, bearings, pump components, and extrusion dies that use high hardness, abrasion resistance, and corrosion resistance of carbide of silicon.

• Fixed and moving turbine components
• Seals, bearings, pump vanes
• Ball valve parts
• Wear plates
• Kiln furniture
• Heat exchangers
• Semiconductor wafer processing equipment

Metallurgy and power industry: The reason why these two industries are put together is mainly because the two industries have a large number of metal pipes for the transmission of coal powder, ash, mud, and the like. After using the wear-resistant elbow pipe, the advantages of strong wear resistance, long life and easy installation are immediately highlighted.

Mining industry: If the wear-resistant elbow pipe is not used, the ordinary pipe is used for the transportation of the ore powder. Due to the filling of the mine and the transportation of the concentrate powder, the wear of the pipe is relatively large, so that the life of these pipes is only about one year. After wearing elbow pipes, the life of such pipes will be extended by a factor of five.

Coal industry: If long-distance wet transport of coal is required, the pipe has the requirements of good wear resistance and high corrosion resistance, and the pipe with wear-resistant elbow can meet these requirements well.

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Advantages of silicon carbide ceramic liner and metal composite pipe:

1. High strength: as the outer wall of the composite steel pipe is made of common ordinary steel pipe, the strength requirements of various processes are fully satisfied, under the support of the outer wall steel pipe.
2. High wear resistance: Most of the inner wall of the steel pipe is a high wear-resistant ceramic which are selected according to the process requirements. The ceramic content is more than 95%. Thus, the product has good wear resistance.
3. High anti corrosion: As the composite layer is made of corrosion-resistant materials, it seems to solve the main problems. It can be widely used in sites containing acid, alkali and salt.
4. High bond strength: The matrix of the composite is made of organic polymer. On the basis of inorganic ceramic as a reinforcing agent, it is articulated under the environment of specific temperature, pressure and proper vacuum. At the same time, together with the inner wall of the steel pipe, the peeling strength is up to 14-16 MP which is is more than 100 times of the ordinary lining pipe. However, the difference of thermal expansion coefficient of composite layer leads to the phenomenon of inner liner falling off.
5. Weather ability: This product can be used for 40 to 200 degrees for a long period of time. It can be as high as 260 degrees. This product is widely used in environmental protection, electric power, chemical industry, metallurgy, mining and other industries. It is an ideal substitute for lining plastic pipes.

And it has developed rapidly. When transporting the materials with the harder abrasion (such as ash dregs, slag, coal powder, mining dregs, the rest mines, cement, etc), it will exit the problem that the abrasion of pipes is too rapid. Especially, the abrasion of bent pipes is greatly more rapid.

When transporting the special abrasion materials or erosive materials, it will exit the problem that the damage of pipes is too rapid.

SiC Ceramic lined pipe and the traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe and steel, steel and other rubber pipe is essentially different. Ceramic lined pipe is the outer layer of steel, the inner layer is RBSiC ceramic. Moh’s hardness of up to 13. Wear resistance than carbon steel pipe more than 30 times higher.

At present, the use of our company’s high wear-resistant ceramic lined steel pipe dozens of thermal power plant practice shows that: ceramic lined steel pipe anti-wear ability, anti-fluid erosion ability.

In a duct, the elbow wear the fastest, in practice, Ceramic lined pipe used after 1 to 2 years to open the observation and measurement, the composite layer are no obvious wear or tear off, ceramic-coated steel pipe wear Than the thick-walled wear-resistant cast steel pipe increased by nearly 10 times.

Ultra high molecular weight polyethylene pipe

Ultra-high molecular weight polyethylene (UHMW-PE) is a new kind of engineering thermoplastics with more than 3 million viscosity-average molecular weight.

Size range of UHMWPE pipe:

DN mm	0.6Mpa	0.8Mpa	1.0Mpa	1.25Mpa	1.6Mpa	2.0Mpa
W.T mm	W.T mm	W.T mm	W.T mm	W.T mm	W.T mm
65					8	9
96					9	10
110					8	10
130				8	10	12
159				10	12	15
168			8	10	13	16
205		8	10	12	15	18
219		9	11	13	16	20
236		10	12	14	18	22
250		10	12	15	19	23
273	9	11	13	16	21	25
280	9	11	14	17	21	26
300	10	12	15	18	23	27
315	10	12	15	19	24	29
325	10	13	16	19	24	30
350	11	14	17	21	26	32
377	12	15	18	22	28	35
400	12	16	19	24	30	36
415	13	16	20	25	31
426	13	17	20	25	32
536	16	21	26	23
560	16	22	27	33
630	19	25	30	37
652	20	26	32	38
710	21	27	34
800	23	31	38

What is UHMWPE

Ultra-high molecular weight polyethylene pipe has superior performance over conventional HDPE pipe such as very high wear resistance, impact resistance, excellent resistance to internal pressure strength, resistance to environmental stress cracking, intrinsically self-lubricating, anti-adhesion, low temperature resistance and excellent chemical resistance.UHMWPE wear pipeUHMWPE pipe bendUHMWPE pipe for dredgingeUHMWPE pipe with flangee

Ultra-high molecular weight polyethylene (UHMW full name is ultra-high molecular weight polyethylene pipe) is a thermoplastic engineering plastics with an average molecular weight greater than 1.5 million, which is polymerized by ethylene and butadiene monomer under the action of a catalyst.

Ultra high molecular weight polyethylene is superior in comprehensive performance, abrasion resistance, low temperature, corrosion resistance, self lubrication, impact resistance in all plastic for the highest value, wear-resistant properties than PTFE, nylon, carbon steel and other materials, can be long-term in-169 to +80℃ conditions, known as “amazing” engineering plastics, Ultra-high molecular weight polyethylene Engineering Plastics (UHMW—PE) pipeline technology is becoming more and more mature in China, more and more projects adopt this kind of pipeline, become a kind of new thermoplastic engineering plastics with good price, it almost concentrates the advantages of various plastics, wear-resisting impact, self-lubricating, corrosion resistance, low temperature, hygienic non-toxic, Non-adhesion, water and other comprehensive properties, is an ideal pipe, can be widely used in mining (ore powder, pulp, tailings discharge pipelines) metallurgy, electricity, petroleum, textile, papermaking, food, chemical, mechanical, electrical and other industries.

Role of Molecular Weight

UHMWPE denotes Ultra High Molecular Weight Polyethylene which is a polyethylene polymer with an average molecular weight is greater than 3,100,000 as defined by ASTM D4020 – Standard specification for UHMWPE polymers. This molecular weight is well above the molecular weight of most typical polymers which are between 1,000,000 and 400,000 thus earning the title Ultra-High Molecular Weight Polyethylene. Polyethylenes with molecular weight in the 3.1 -4.5 Million range have been found to exhibit the best combination of impact strength and abrasion resistance.

For Polyethylene molecular weight classification the following guidelines can be used:

• HDPE (High Density Polyethylene): 100,000 – 400,000 MW
• HMWHDPE (High Molecular Weight High Density Polyethylene) 500,000 – 1,999,999
• VHMWHDPE (Very High Molecular Weight High Density Polyethylene) 2,000,000 – 3,100,000
• UHMWPE (Ultra High Molecular Weight Polyethylene) > 3,100,000 + MW

Attributes of UHMWPE Pipes

• Abrasion resistance – UHMWPE pipes have excellent abrasion resistance providing long life in abrasive slurry applications.
• Chemical resistance – outstanding resistance to a wide range of chemical reagents allows the use of UHMWPE systems in tailings pipelines and chemical treatment applications used in mining operations.
• Flexibility – UHMWPE pipes can be bent to a minimum of 30 times the pipe’s outside diameter for HDPE. This flexibility and resiliency allows the pipe to absorb surge pressures, vibration and stresses caused by soil movement. This makes the pipes particularly useful in submarine pipe lines, mine subsidence and earthquake prone areas.
• High flow capacity – low friction compared with materials such as fibre reinforced cement and resistance to material deposit buildup give UHMWPE pipes long lived high flow capacity.
• Lower pumping cost due to greater hydraulic capacity as compared with steel and HDPE pipes.
• Ease of installation – UHMWPE is easy to install with light weights and flanged couplings.

Excellent characteristics of piping

Ultra-high molecular weight polyethylene pipe (UHMWPE) wear-resistant plastic crown, is carbon steel, stainless steel 3-7 times. Low friction coefficient, self-lubricating, anti-adhesion, no scaling, reduce the energy transmission of materials. Top of the plastic in the impact strength column. The impact energy absorption value is highest in all plastics and has a silencing nature. Good chemical stability. Excellent low-temperature resistance. Sanitation is non-toxic to food and drugs.

1. very high wear resistance, UHMW products unique molecular structure, so that it has a very high ability to resist sliding. Wear resistance is higher than the general alloy steel 6.6 times times, stainless steel 27.3 times times. is phenolic resin 17.9 times times, nylon six 6 times times, polyethylene 4 times times the annual wear rate of 0. 58㎜, the service life of pipeline is greatly improved.
2. extremely high impact resistance, in the existing engineering plastics, the impact toughness of this product is the highest, many materials in severe or repeated explosions of the impact of cracks, breakage, crushing or surface stress fatigue. This product according to the GB1843 standard, carries on the cantilever beam impact experiment to achieve no breakage.
3. excellent chemical stability, this product can withstand strong chemical erosion, in addition to certain acids at elevated temperatures there is a slight corrosion, in other lye, acid solution is not corrosion. Can be used in concentrated hydrochloric acid with a concentration of less than 80%, the performance is fairly stable in nitric acid with a concentration of less than 75% and a concentration of less than 20%.
4. good self-lubricating, because this product contains wax-like material, and its own lubrication is good. The coefficient of friction (196n,2 hours) is only 0.219mn/m (GB3960). Self-sliding performance is superior to oil-lubricated steel or brass. Especially in the environment, dust, sand and many places, the product of its own dry lubrication performance more fully displayed. Not only can exercise freely, and protect the related workpiece does not wear or pull injury.
5. non-toxic to the biological, ultrahigh molecular weight Polyethylene Engineering Plastics (UHMW—-PE) pipeline to adapt to water quality fluids, solid particles, powders, slurry, etc., the traditional metal pipe difficult to meet the requirements of ultra-high molecular weight polyethylene (UHMW—-PE) pipeline can be replaced by extremely high corrosion resistance, high wear resistance, Self-lubricating absorption shock and other comprehensive properties, in various industries have a wide range of applications in solid particles, powder, slurry, gas transport, has a unique advantage.
6. the unique low-temperature resistance, this product is excellent low-temperature resistance, its impact resistance, wear resistance in Minus 269 degrees Celsius basic unchanged. It is the only kind of engineering plastics which can work at a temperature close to absolute 0 degrees at present. At the same time, the temperature of the product is wide, can be long-term in the 269 ℃ to 80 ℃ of work.
7. the surface is not adhered to, this product because of the small friction coefficient and the infinite, it has a good surface adhesion. The existing materials generally in the ph value of more than 9 of the medium are scaling, this product is not scaling, the characteristics of fire power plant for the discharge of fly ash system has great significance. In crude oil, mud and other transportation pipelines are also very suitable.
8. the best resistance to environmental stress cracking, resistance to environmental stress cracking >4000h, elastic modulus is 1.5 times times more than PE100, anti-fatigue strength of 500,000 times.
9. other characteristics, the product also has absorption, noise absorption, anti-static, the neutron has shielding capacity, do not absorb water, light weight. Easy machining, coloring and other outstanding characteristics.

Benefits of Ultra High MW

• UHMWPE by virtue of its extremely high molecular weight yields several unique properties, including the highest abrasion resistance and highest impact strength of any plastic.
• Beware of competitive products claiming to be UHMWPE as some techniques for processability of UHMWPE are not without an attendant disadvantage since effective amounts of intermediate molecular weight polyethylene causes a marked decrease in some of the most desirable properties of the UHMWPE, such as impact strength and abrasion resistance.
• The high molecular weight is what gives UHMW-PE a unique combination of high impact strength, low coefficient of friction and abrasion resistance that outwears carbon steel 10 to 1 making it more suitable for many applications where lower molecular weight grades fail.
• UHMWPE pipes can be used in a broad range of mining and industrial slurry applications due to its three main characteristics: high impact strength, outstanding abrasion resistance and extremely low coefficient of friction.
• Ultra-high molecular weight polyethylene (UHMW) is a tough, abrasion-resistant thermoplastic with a molecular weight of greater than 3 million. UHMWPE pipes have reduced coefficient of friction, improved abrasion resistance, lower wear rates over conventional HDPE pipes such as PE100.

Exceptionally High Wear

Ultrahigh molecular weight polyethylene (UHMWPE) shows unusually high wear resistance compared to most materials. This is due to a combination of very high molecular weight and the resulting entanglements and relative surface softness with a slippery waxy surface.

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UHMWPE Lined Steel Pipe

UHMWPE lined steel pipe also named high wear resistant PE-steel composite pipe, it is combined by carbon steel pipeline and UHMWPE pipeline through special technical method, and the diameter of the composite pipe is available from DN200~DN1200.

The UHMWPE -steel composite pipeline is combined from steel pipeline and UHMWPE pipeline .

Steel pipeline： Q235 or as client’s request；

UHMWPE pipe: Raw material is UHMWPE(Ultra High Molecular Weight Polyethane), UHMWPE usually refers to the linear polyethylene with a viscosity average molecular weight more than 1.5 million Dalton.With at least 3~5 times higher of molecular weight than HDPE, the UHMWPE materials have better performances of excellent wear resistance, lower temperature resistance, corrosion resistance, self lubrication, anti-impact. The wear resistance is the beast among plastics, and it can work under -110℃ to 70℃for a long time.

Outer layer of the composite pipe is a steel pipe with steel flange, inner layer is UHMWPE pipe, inner UHMWPE pipe at both ends should be 60mm longer than steel pipe. Then flange the inner UHMWPE pipe, with this UHMWPE flange, the UHMWPE pipeline and steel pipeline can be plying-up very well, and it also increases the strength of the two side connection part. There is a sealing face on the UHMWPE flange to protect the pipeline from leakage.

Benefits of UHMWPE lined Steel Pipe:

1. Bear high pressure, the UHMWPE -steel composite pipe can bear pressure from 5~8 Mpa.
2. High wear-resistant ability, among all the plastic materials, UHMWPE is the best one for wear-resistant ability, cause its average molecular weight is above 1.5million, while the HDPE material is only 0.3~0.5 million, and by test, the UHMWPE pipeline is 4 times wear-resistant than HDPE pipeline. By lining the UHMWPE pipeline inside the steel pipe, which can increase 6 times wear-resistant ability.
3. Low water-resistant, low friction coefficient, nonscaling, save fuel engine cost, because the roughness of the UHMWPE pipeline is only 0.00022, while HDPE is 0.01 and steel is 0.1. By lining the UHMWPE Pipeline inside the steel pipeline, the whole pipeline will save at least 20% fuel engine cost.
4. Anti-corrosion, the inner UHMWPE pipe with very stable chemical property, it is anti-corrosion from a strong acid, alkali, salt, water, sewage, soil corrosion, which increase the using life of the whole pipeline perfectly.

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Application of UHMWPE pipe:

Compare with existing plastic pipes, Wear resistant UNMWPE pipe has the most excellent wear resistance which is 4 to 7 times that of Q235 steel pipe and 2.7 times that of wear-resistant steel 16Mn. Therefore it increases pipe flow rate and improves the transmission efficiency of more than 20%. The working life of UHMWPE pipes is more than 3 times that of wear-resistant steel pipe. Wear resistant UHMWPE pipe has great advantages to replace traditional metal pipes in delivering abrasive media.

UHMWPE Pipe for Dredging Applications

UHMWPE pipes are widely used in the industries of dredging, mining, metallurgy, electric power, oil, textile, paper, food, chemical, mechanics, gas, tunneling ect.

UHMWPE Slurry Pipe

UHMWPE has the following impressive statistics: up to 15 times the abrasion resistance of steel while being 8 times lighter than steel and having 5 times lower coefficient of friction than steel and offering as low as 1/10 the pressure loss of steel pipes.

• UHMWPE PIPE for mine tailings and slurry in the mining industry
• UHMWPE PIPE for dredging mud and sand
• UHMWPE PIPE for thermal power system coal ash transport
• UHMWPE PIPE corrosive particles and liquids
• UHMWPE PIPE transport pulverized coal and coal-water slurry
• UHMWPE PIPE for food transport

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What are the characteristics of UHMWPE Pipe?

Because UHMWPE Pipe has a high molecular weight, it has good comprehensive properties and has become a new type of thermoplastic engineering plastic with excellent performance. It has almost the advantages of various plastics and has unparalleled wear resistance and resistance to ordinary polyethylene and other engineering plastics. Impact, self-lubrication, corrosion resistance, low-temperature resistance, hygienic non-toxic, non-adhesion, non-water absorption and other comprehensive properties. It has unique advantages in the transportation of solid particles, powder, slurry and gas.

At present, ultra-high molecular weight polyethylene pipes have achieved industrial continuous production in China. However, due to the characteristics of the UHMWPE raw materials, it is difficult to process UHMWPE pipes. Although the production of UHMWPE pipes has realized continuous extrusion production by a plastic extruder, its production speed is only ordinary plastics. The pipe production speed is 1%, so increasing the production rate of ultra-high molecular weight polyethylene pipes and improving the wear resistance index has become the focus of industry research.

Because the ultra-high molecular weight polyethylene pipe has excellent characteristics such as friction resistance, corrosion resistance, impact resistance, self-lubrication, non-adhesion, non-absorption of water, etc., it is recognized by the market, so the application range of ultra-high molecular weight polyethylene pipe is expanding.

The unique properties of the UHMWPE pipe material determine the slow speed of the pipe production line. The main equipment is the extruder and the mold.

As a Polyethylene UHMWPE Sheet Manufacturer, share with you the characteristics of UHMW-PE pipe products.

Ultra-high molecular weight polyethylene pipe refers to the pipe that is formed by using ultra-high molecular weight polyethylene as the main raw material. Its main characteristics are shown in the following points:

1.No leakage

China’s water supply and drainage pipelines mainly use PCCP pipes, cast iron pipes, and glass steel pipes. They are connected by sockets, sealed by rubber rings, and have serious leakage in the pipe network. The average leakage rate is about 15-30%, which wastes resources and increases pipe maintenance costs. The ultra-high molecular weight polyethylene pipe successfully solved this problem with excellent performance and brought major changes to the water supply and drainage engineering.

2.Low energy consumption

The ultra-high molecular weight polyethylene pipe has a roughness of 0.0065, the steel pipe has a roughness of 0.012, and the cement pipe has a roughness of 0.013. The water flow rate of ultra-high molecular weight polyethylene pipes of the same caliber is greater than that of PCCP pipes and cast-iron pipes. At the same flow rate, UHMWPE pipes can save energy by 25%.

Ultra-high molecular weight polyethylene pipe has a series of characteristics such as corrosion resistance, low-temperature resistance, non-scaling, and no leakage. Therefore, the pipe does not need to be rust-proof, decontaminated and overhauled for decades after operation, which can save more than 95% of operating and maintenance costs.

Rare earth alloy wear-resistant pipe bending

Features of Rare earth alloy wear-resistant pipe bending:

The late eighty`s, American technology of rare eath wear resistant steel was introduced into our country. The relevant experts researched and made many experiments. The rare-earth wear-resistant steel had occupied the main position.Rare-earth wear-resistant steel is based on 40 steel. Cr, Ni, Si, Mo, Mn, Re elements are mixed in 40 steel forming low alloy steel which carbon content is 0.35~ 0.45%.

Customerised pipe bending

Performance indicators:

• Grade: ZG40CrNiMoMnSiRe
• Hardness: HRC ≥ 40
• Impact toughness: ≥ 14J/cm2
• Tensile strength: ≥ 700MPa

Packing:

• Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested.
• Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles.

Uses:

Rare high-strength low-alloy heat-resistant, wear-resistant steel parts for the power plant boiler systems in coal, powder, ash slagging pipeline.

We have a team of experienced professionals with years of experience in manufacturing.

Rare Earth Alloy Wear-resisting Casting Pipe

We are manufacturer of Rare Earth Alloy Wear-resisting Casting Pipe and supply high quality Rare Earth Alloy Wear-resisting Casting Pipe in both large and small quantities worldwide and offer you the best prices in the market.

Features of Rare Earth Alloy Wear-resisting Casting Pipe:

My company and major universities jointly developed a new type of high-strength wear-resistant alloy of rare earth products, it is crucial to overcome the technical material of cold, heat, cracking, brittleness, deformation, etc.,

With high strength, good toughness, corrosion resistance, weldability well, the process is using the most advanced centrifugal casting, long life, under the same conditions than the high manganese steel materials, wear the unit around one-third of the high manganese steel, high manganese steel service life is three times above.

Bends and branches seamless steel pipe sections with supporting the use, installation and maintenance more convenient.

Performance indicators:

• Grade: ZG40CrNiMoMnSiRe
• Hardness: HRC ≥ 40
• Impact toughness: ≥ 14J/cm2
• Tensile strength: ≥ 700MPa

Uses:

Rare high-strength low-alloy heat-resistant, wear-resistant steel parts for the power plant boiler systems in coal, powder, ash slagging pipeline.

Packing:

• Packed in wooden crates, wrapped in plastic, and suitably protected for sea-worthly delivery or as requested. 
• Both ends of each crate will indicate the order no., heat no., dimensions, weight and bundles. 

We have a team of experienced professionals with years of experience in manufacturing.

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What is the material of the rare earth wear-resistant alloy pipe

The wear and tear of rare earth alloy is a phenomenon of material loss caused by relative motion between objects. Rare earth wear-resistant alloy steel tube wear-resistant materials can resist wear and prolong the life of the product. Mainly divided into single metal pipe and composite pipe. According to the shape can be divided into straight pipe, elbow, tee, four-pass, reducer, Fangyuan section and other special-shaped tubes.

Surface Quality requirements: the internal and external surface of the pipeline should be smooth and smooth, no burrs, burrs, sticky sand, more meat or lack of meat, no cracks, loose, stomata or bubbles.

Rare earth wear-resistant pipe, is in the area of serious wear, such as elbow, reducer, suction nozzle, such as the use of the model as a whole casting, especially in the outside of the elbow wear particularly significant parts, the external diameter of the method to change the center of the design, so that the wear serious parts of the local thickening, but also according to various requirements, Make a variety of irregular shaped pipe fittings to meet the design requirements, straight pipe is centrifugal casting. Second, the rare earth wear-resistant alloy containing CR, Ni, Mo, W, V, Cu and many other alloying elements, it not only has a high hardness, but also has a certain mechanical properties, at room temperature with good welding performance, and has the possibility of cutting and on-site openings, but also has a certain corrosion resistance. In the actual use of the process, whether it is in the steel slag pipe, or in the coal preparation plant, such as the use of washing pipes have achieved very good results, in the same conditions compared with high manganese steel, the unit wear is about 1/5 of the higher manganese steel, the service life is high manganese steel 4-5 times, elbow and branch pipe can be used with seamless pipe fittings, installation, maintenance more convenient.

High strength and low alloy rare earth heat-resisting and wear-resisting steel pipe parts are suitable for coal conveying, powder feeding, ash discharging pipeline and coal preparation plant transportation pipeline in thermal power plant boiler system.

Rare earth alloy wear-resistant pipe Material composition table

No.

Grade

Chemical component

C

Mn

Si

Cr

Ni

Mo

W

V

Nb

Cu

Re

N

S

P

1

ZGCr20Mo3Ni3Re

2.50/ 3.0

1.50/ 2.0

0.80/ 1.20

18.0/ 23.0

2.50/ 3.0

√

1.20/ 1.50

√

≤0.06

≤0.06

2

ZGCr28Mo3Ni3Re

2.80/ 3.30

1.50/ 2.0

1.80/ 1.20

25.0/ 300

2.80/ 3.30

√

1.80/ 2.30

√

≤0.06

≤0.06

3

ZGCr15Mo3Re

2.60/ 3.20

1.20/ 1.60

1.0/ 1.50

12.0/ 16.0

√

2.50/ 3.0

1080/ 1.20

√

≤0.04

≤0.05

4

ZGCr25Ni4Si2Re

0.35/ 0.45

0.80/ 1.20

1.20/ 1.60

23.0/ 26.0

3.50/ 4.50

√

√

≤0.035

≤0.045

5

ZGCr15Mo2Re

1.80/ 2.20

0.80/ 1.20

1.0/ 1.50

14.0/ 18.0

√

2.0/ 2.50

0.80/ 1.20

√

≤0.04

≤0.05

6

ZG40CrMnMoNiSiRe

0.40/ 0.50

1.20/ 1.60

1.50/ 2.0

1.10/ 1.60

1.0/ 1.50

√

√

√

√

≤0.035

≤0.04

7

ZG40Cr5Ni3MoVWRe

0.35/ 0.45

0.80/ 1.2

1.20/ 1.60

23.0/ 26.0

2.50/ 3.50

√

√

√

√

≤0.045

≤0.055

8

ZG50Cr18Ni4MoVWCuRe

0.45/ 0.60

1.0/ 1.40

1.50/ 2.0

16.0/ 20.0

3.50/ 5.0

√

√

√

0.40/ 0.60

√

≤0.35

≤0.35

9

ZGCr25Ni2Mo2WVCuRe

0.40/ 0.60

0.80/ 1.20

1.20/ 1.60

23.0/ 26.0

1.50/ 2.50

√

√

√

0.20/ 0.40

√

≤0.035

≤0.035

10

ZG40Cr25Ni6MoWVCuRe

0.35/ 0.45

1.2/ 1.60

1.50/ 2.0

23.0/ 26.0

5.0/ 7.0

√

√

√

√

√

√

≤0.35

≤0.045

11

ZG90CrMn13MoSiVRe

0.40/ 1.30

11.0/ 14.0

0.30/ 0.80

√

√

≤0.04

≤0.04

12

ZGCrMu10MoSiVRe

1.0/ 1.20

8.0/ 11.0

0.30/ 0.80

√

√

≤0.04

≤0.04

13

ZGW5Cr4Re

2.50/ 3.50

1.5/ 1.0

0.50/ 1.0

35.0/ 4.50

√

√

≤0.10

≤0.15

14

ZGCr25MoRe

2.30/ 3.0

0.50/ 0.90

0.30/ 0.60

23.0/ 28.0

√

√

≤0.06

≤0.10

15

ZGCr15MoRe

3.0/ 3.50

≤1.0

0.15/ 1.0

15.0/ 18.60

2.80/ 3.30

√

≤0.06

≤0.10

16

ZG30CrMnSi

0.27/ 0.33

1.30/ 1.50

1.20/ 1.50

√

√

√

≤0.03

≤0.04

17

ZG40CrNiRe

0.28/ 0.43

1.10/ 1.40

0.80/ 1.0

√

√

√

≤0.06

≤0.10

18

ZG33Cr13Ni4Re

0.30/ 0.35

≤0.80

≤0.60

12.0/ 14.0

4.0/ 4.50

√

√

≤0.06

≤0.10

19

ZG40CrSiN

0.35/ 0.45

1.0/ 1.50

1.50/ 2.0

√

√

≤0.04

≤0.08

Note: All content in this article is for reference only.

Rare earth alloy wear-resistant tube

The rare earth alloy wear- esistant pipe is used for pneumatic, pump slurry, etc. Rare earth alloy wear resistant pipe has the characteristics of fast velocity and high flow rate. The conveying medium temporarily continues to produce impact on the pipe wall, wear, corrosion and so on, which causes the pipe to become tired and gradually wear out.

• 

• 

• 

• 

• 

• 

Rare earth alloy wear – resistant tube is badly worn parts, such as pipe, elbow, reducer, and water intake place such as the model of integral casting, then mechanical processing method, especially the outer wear parts, especially in the elbow to the outer diameter change circle method is adopted to carry on the design, local thickening severe wear parts, but also according to various requirements, produce all kinds of irregular switch pipe fittings to meet the design requirements, straight tube is using centrifugal casting.Rare-earth wear-resistant alloy containing Cr, Ni, V, Mo, W, a variety of alloy element such as Cu, it not only has high hardness, but also has certain mechanical properties, at room temperature with good welding performance, and can be cut and the possibility of opening, also has certain corrosion resistance.

Property

• No.：ZG40CrNiMoMnSiRe
• Hardness：HTC≥40

使用温度℃	磨料磨损mg/g	硬度HRC	抗拉强度N/mm²	冲击韧性J/cm²
≤300	0.021	≥63	890	5
≤350	0.033	≥56	910	6
≤350	0.042	≥45	910	6
≤400	0.069	≥42	960	6
≤400	0.039	≥48	920	7
≤400	0.064	≥40	950	7
≤400	0.069	≥36	910	8
≤400	0.036	≥42	1040	8.5-10

Usage:

Rare earth alloy wear-resistant tube is used for conveying wear-resistant pipes such as power plant powder and ash, mine slag and non-ferrous metal coal extraction and slag discharge, shock resistance and wear resistance.

Specifications

Note:

in addition to the specifications and model sizes provided in the table, various pipe lengths within 6m and 12m can also be provided according to the actual design requirements of the user’s working conditions.

ND	O.D. (1)	O.D. (2)	Length (mm)	S	Reference weight (kgs)
DN80	80	105	3000	12.5	84
DN83	83	108	3000	12.5	87
DN100	100	125	6000	12.5	220
DN108	108	133	6000	12.5	240
DN125	125	150	6000	12.5	261
DN134	134	159	6000	12.5	267
DN150	150	175	6000	12.5	317
DN159	159	184	6000	12.5	326
DN175	179	205	6000	15	445
DN190	190	219	6000	15	450
DN197	197	230	6000	16.5	504
DN200	200	230	6000	15	508
DN219	219	249	6000	15	512
DN229	229	255	6000	15	553
DN239	239	273	6000	17	546
DN250	250	280	6000	15	580
DN254	254	284	6000	15	631
DN273	273	308	6000	17.5	726
DN290	290	325	6000	17.5	768
DN300	300	335	6000	17.5	860
DN342	342	377	6000	17.5	900
DN350	350	385	6000	17.5	1005
DN391	391	426	6000	17.5	1020
DN400	400	430	6000	17.5	1044
DN450	450	495	6000	22.5	1524
DN500	500	548	6000	24	1800

Rare earth alloy wear-resistant pipe Performance chart

No.	Mechanical property	Appication scope
Yield strength ≥MPa	Strength of extension  ≥MPa	Impact J/cm2	Temperature ℃	Abrasive wear mg/g	Hardness ≥HRC（≥HB）
1		790	11	1100	0.026	45	Apply to power plant, metallurgy, high anti-wear components ash pump impeller, sheath, collar, front and rear guard board and medium speed mill, E type mill, MPS roller set, bushing and no welding (flange, flexible connection) coal straight tube bending static abrasive wear components, etc.
2		810	9	1050	0.023	51
3		890	5	300	0.021	63
4		910	16	1050	0.033	(400)
5		920	6	530	0.042	52
6		940	10	400	0.069	42	Mill coal pulverizing system of steel used in power plant furnace tube, cone doors, coal feeding door, elbow, straight pipe, sieve plate, metallurgy of blast furnace lining board, teeth board and scraper, sludge scraper slag machine, chassis, chain and sprocket little impact resistant components, electric power, metallurgy, mining and other pipes.
7		730	100	750	0.091	(210)
8		680	90	760	0.096	(220)
9	450	690	5	1150	0.041	38
10	380	580	12	800	0.061	36
11	400	530	16	900	0.086	34
12	420	560	20	950	0.089	32
13		590	5	100	0.026	52	Is mainly used for mining lose slag and coal slag discharge, and power plants lose non-ferrous metal powder, ash discharge pipeline, such as large and medium-sized fork tube, straight tube bending, poor working conditions of wear resistant components can also be used for coal mill lining tile hammer, hammer rings, the coal gate, door, etc.Good mechanical and welding performance and wear resistance under impact condition.
14		610	5．5	960	0.024	50
15		580	4．5	980	0.091	(441)
16		1700	10	750	0.12	(300)
17		960	6	600	0.69	(460)
18		920	7	850	0.039	48
19		950	7．5	450	0.064	40

Rare earth alloy wear-resistant pipe Material composition table

No.

Steel grade

Chemical component

C

Mn

Si

Cr

Ni

Mo

W

V

Nb

Cu

Re

N

S

P

1

ZGCr20Mo3Ni3Re

2.50/ 3.0

1.50/ 2.0

0.80/ 1.20

18.0/ 23.0

2.50/ 3.0

√

1.20/ 1.50

√

≤0.06

≤0.06

2

ZGCr28Mo3Ni3Re

2.80/ 3.30

1.50/ 2.0

1.80/ 1.20

25.0/ 300

2.80/ 3.30

√

1.80/ 2.30

√

≤0.06

≤0.06

3

ZGCr15Mo3Re

2.60/ 3.20

1.20/ 1.60

1.0/ 1.50

12.0/ 16.0

√

2.50/ 3.0

1080/ 1.20

√

≤0.04

≤0.05

4

ZGCr25Ni4Si2Re

0.35/ 0.45

0.80/ 1.20

1.20/ 1.60

23.0/ 26.0

3.50/ 4.50

√

√

≤0.035

≤0.045

5

ZGCr15Mo2Re

1.80/ 2.20

0.80/ 1.20

1.0/ 1.50

14.0/ 18.0

√

2.0/ 2.50

0.80/ 1.20

√

≤0.04

≤0.05

6

ZG40CrMnMoNiSiRe

0.40/ 0.50

1.20/ 1.60

1.50/ 2.0

1.10/ 1.60

1.0/ 1.50

√

√

√

√

≤0.035

≤0.04

7

ZG40Cr5Ni3MoVWRe

0.35/ 0.45

0.80/ 1.2

1.20/ 1.60

23.0/ 26.0

2.50/ 3.50

√

√

√

√

≤0.045

≤0.055

8

ZG50Cr18Ni4MoVWCuRe

0.45/ 0.60

1.0/ 1.40

1.50/ 2.0

16.0/ 20.0

3.50/ 5.0

√

√

√

0.40/ 0.60

√

≤0.35

≤0.35

9

ZGCr25Ni2Mo2WVCuRe

0.40/ 0.60

0.80/ 1.20

1.20/ 1.60

23.0/ 26.0

1.50/ 2.50

√

√

√

0.20/ 0.40

√

≤0.035

≤0.035

10

ZG40Cr25Ni6MoWVCuRe

0.35/ 0.45

1.2/ 1.60

1.50/ 2.0

23.0/ 26.0

5.0/ 7.0

√

√

√

√

√

√

≤0.35

≤0.045

11

ZG90CrMn13MoSiVRe

0.40/ 1.30

11.0/ 14.0

0.30/ 0.80

√

√

≤0.04

≤0.04

12

ZGCrMu10MoSiVRe

1.0/ 1.20

8.0/ 11.0

0.30/ 0.80

√

√

≤0.04

≤0.04

13

ZGW5Cr4Re

2.50/ 3.50

1.5/ 1.0

0.50/ 1.0

35.0/ 4.50

√

√

≤0.10

≤0.15

14

ZGCr25MoRe

2.30/ 3.0

0.50/ 0.90

0.30/ 0.60

23.0/ 28.0

√

√

≤0.06

≤0.10

15

ZGCr15MoRe

3.0/ 3.50

≤1.0

0.15/ 1.0

15.0/ 18.60

2.80/ 3.30

√

≤0.06

≤0.10

16

ZG30CrMnSi

0.27/ 0.33

1.30/ 1.50

1.20/ 1.50

√

√

√

≤0.03

≤0.04

17

ZG40CrNiRe

0.28/ 0.43

1.10/ 1.40

0.80/ 1.0

√

√

√

≤0.06

≤0.10

18

ZG33Cr13Ni4Re

0.30/ 0.35

≤0.80

≤0.60

12.0/ 14.0

4.0/ 4.50

√

√

≤0.06

≤0.10

19

ZG40CrSiN

0.35/ 0.45

1.0/ 1.50

1.50/ 2.0

√

√

≤0.04

≤0.08

Note: All content in this article is for reference only.

Rare earth metal wear resistant pipe

Rare earth metal wear resistant pipe and Bend are cast with mold vanishing vacuum suction casting cladding process. Outer of straight pipe is common steel pipe, cladding realized by forming high chromium lining via centrifugal forming technique.

Rare earth alloy wear-resistant pipe Material composition table

No.

Grade

Chemical component

C

Mn

Si

Cr

Ni

Mo

W

V

Nb

Cu

Re

N

S

P

1

ZGCr20Mo3Ni3Re

2.50/ 3.0

1.50/ 2.0

0.80/ 1.20

18.0/ 23.0

2.50/ 3.0

√

1.20/ 1.50

√

≤0.06

≤0.06

2

ZGCr28Mo3Ni3Re

2.80/ 3.30

1.50/ 2.0

1.80/ 1.20

25.0/ 300

2.80/ 3.30

√

1.80/ 2.30

√

≤0.06

≤0.06

3

ZGCr15Mo3Re

2.60/ 3.20

1.20/ 1.60

1.0/ 1.50

12.0/ 16.0

√

2.50/ 3.0

1080/ 1.20

√

≤0.04

≤0.05

4

ZGCr25Ni4Si2Re

0.35/ 0.45

0.80/ 1.20

1.20/ 1.60

23.0/ 26.0

3.50/ 4.50

√

√

≤0.035

≤0.045

5

ZGCr15Mo2Re

1.80/ 2.20

0.80/ 1.20

1.0/ 1.50

14.0/ 18.0

√

2.0/ 2.50

0.80/ 1.20

√

≤0.04

≤0.05

6

ZG40CrMnMoNiSiRe

0.40/ 0.50

1.20/ 1.60

1.50/ 2.0

1.10/ 1.60

1.0/ 1.50

√

√

√

√

≤0.035

≤0.04

7

ZG40Cr5Ni3MoVWRe

0.35/ 0.45

0.80/ 1.2

1.20/ 1.60

23.0/ 26.0

2.50/ 3.50

√

√

√

√

≤0.045

≤0.055

8

ZG50Cr18Ni4MoVWCuRe

0.45/ 0.60

1.0/ 1.40

1.50/ 2.0

16.0/ 20.0

3.50/ 5.0

√

√

√

0.40/ 0.60

√

≤0.35

≤0.35

9

ZGCr25Ni2Mo2WVCuRe

0.40/ 0.60

0.80/ 1.20

1.20/ 1.60

23.0/ 26.0

1.50/ 2.50

√

√

√

0.20/ 0.40

√

≤0.035

≤0.035

10

ZG40Cr25Ni6MoWVCuRe

0.35/ 0.45

1.2/ 1.60

1.50/ 2.0

23.0/ 26.0

5.0/ 7.0

√

√

√

√

√

√

≤0.35

≤0.045

11

ZG90CrMn13MoSiVRe

0.40/ 1.30

11.0/ 14.0

0.30/ 0.80

√

√

≤0.04

≤0.04

12

ZGCrMu10MoSiVRe

1.0/ 1.20

8.0/ 11.0

0.30/ 0.80

√

√

≤0.04

≤0.04

13

ZGW5Cr4Re

2.50/ 3.50

1.5/ 1.0

0.50/ 1.0

35.0/ 4.50

√

√

≤0.10

≤0.15

14

ZGCr25MoRe

2.30/ 3.0

0.50/ 0.90

0.30/ 0.60

23.0/ 28.0

√

√

≤0.06

≤0.10

15

ZGCr15MoRe

3.0/ 3.50

≤1.0

0.15/ 1.0

15.0/ 18.60

2.80/ 3.30

√

≤0.06

≤0.10

16

ZG30CrMnSi

0.27/ 0.33

1.30/ 1.50

1.20/ 1.50

√

√

√

≤0.03

≤0.04

17

ZG40CrNiRe

0.28/ 0.43

1.10/ 1.40

0.80/ 1.0

√

√

√

≤0.06

≤0.10

18

ZG33Cr13Ni4Re

0.30/ 0.35

≤0.80

≤0.60

12.0/ 14.0

4.0/ 4.50

√

√

≤0.06

≤0.10

19

ZG40CrSiN

0.35/ 0.45

1.0/ 1.50

1.50/ 2.0

√

√

≤0.04

≤0.08

Note: All content in this article is for reference only.

• The wear and tear of rare earth alloy is a phenomenon of material loss caused by relative motion between objects.
• Rare earth wear-resistant alloy steel tube wear-resistant materials can resist wear and prolong the life of the product.
• Mainly divided into single metal pipe and composite pipe.
• According to the shape can be divided into straight pipe, elbow, tee, four-pass, reducer, Fangyuan section and other special-shaped tubes.

Performance indicators:

• Grade: ZG40CrNiMoMnSiRe
• Hardness: HRC ≥ 40
• Impact toughness: ≥ 14J/cm2
• Tensile strength: ≥ 700MPa

Surface Quality requirements:

the internal and external surface of the pipeline should be smooth and smooth, no burrs, burrs, sticky sand, more meat or lack of meat, no cracks, loose, stomata or bubbles.

---

What are the materials and uses of the wear-resistant pipe?

According to the different wear conditions, the wear-resistant straight pipe has different material selection.

The function of each material is different, at present there are mainly 4 kinds of materials, including ceramic composite pipe widely used. Materials should be selected according to specific conditions.

According to the pipe material, the wear-resistant tube is divided into the following categories:

SHS ceramic wear-resistant tube (ceramic composite pipe), used in coal washery, thermal power plant ash, steel mills, cement, etc. (the tube is widely used).

1. Cceramic SMD wear-resistant pipe, used for conveying fly ash.
2. Surfacing welding wear-resistant pipe, used for sea sand conveying.
3. Bimetal high chromium alloy wear-resistant pipe, used for power plant pulverized coal.
4. Ceramic ring wear-resistant tube for the delivery of silica fume.
5. Rubber wear-resistant pipe, used in concentrator.
6. Polyethylene wear-resistant pipe for pulp conveying.
7. Cast-stone wear-resistant pipe for pulverized coal conveying.
8. Ni-w alloy wear-resistant tube for high-temperature wear and tear transport.
9. Liner plastic wear-resistant pipe, used for chemical water.

---

What is the material of the rare earth wear-resistant alloy pipe

The wear and tear of rare earth alloy is a phenomenon of material loss caused by relative motion between objects. Rare earth wear-resistant alloy steel tube wear-resistant materials can resist wear and prolong the life of the product. Mainly divided into single metal pipe and composite pipe. According to the shape can be divided into straight pipe, elbow, tee, four-pass, reducer, Fangyuan section and other special-shaped tubes.

Surface Quality requirements: the internal and external surface of the pipeline should be smooth and smooth, no burrs, burrs, sticky sand, more meat or lack of meat, no cracks, loose, stomata or bubbles.

Rare earth wear-resistant pipe, is in the area of serious wear, such as elbow, reducer, suction nozzle, such as the use of the model as a whole casting, especially in the outside of the elbow wear particularly significant parts, the external diameter of the method to change the center of the design, so that the wear serious parts of the local thickening, but also according to various requirements, Make a variety of irregular shaped pipe fittings to meet the design requirements, straight pipe is centrifugal casting. Second, the rare earth wear-resistant alloy containing CR, Ni, Mo, W, V, Cu and many other alloying elements, it not only has a high hardness, but also has a certain mechanical properties, at room temperature with good welding performance, and has the possibility of cutting and on-site openings, but also has a certain corrosion resistance. In the actual use of the process, whether it is in the steel slag pipe, or in the coal preparation plant, such as the use of washing pipes have achieved very good results, in the same conditions compared with high manganese steel, the unit wear is about 1/5 of the higher manganese steel, the service life is high manganese steel 4-5 times, elbow and branch pipe can be used with seamless pipe fittings, installation, maintenance more convenient.

High strength and low alloy rare earth heat-resisting and wear-resisting steel pipe parts are suitable for coal conveying, powder feeding, ash discharging pipeline and coal preparation plant transportation pipeline in thermal power plant boiler system.

---

Classification and designation of wear-resistant pipes for power industry

The abrasion pipe of thermal power plant is mainly conveying raw coal powder, ash slag, flue gas desulfurization (FGD) limestone powder and slurry, due to the transmission of medium velocity fast, poor operating conditions, resulting in pipelines, especially elbow, variable diameter pipe serious wear and corrosion, not only consumes a lot of metal materials, but also to the thermal power plant security, economic operation has brought hidden dangers. The abrasion mechanism of pipeline is mainly based on erosion wear.

Wear-resistant pipe can be divided into two categories: single metal pipe and composite pipe.

Abrasion resistant Straight pipes be Long-term use in power plants

Abrasion resistant pipe elbows be Long-term use in power plants

Power industry wear-resistant pipe variety, pipe code, use characteristics, application range and nominal diameter see the following table:

Types	Wear-resistant pipe code	Usage characteristics and application range	DN/mm
Low alloy wear-resisting cast steel pipe (Single metal pipe)	ZG40GrNiMoG	Good abrasion resistance, high strength, poor weldability, suitable for pulverized coal and ash pipe	DN100-1000
ZG45Cr2MoG	Good abrasion resistance, high strength, poor weldability, suitable for pulverized coal and ash pipe
Medium Alloy wear-resisting cast steel pipe	BTMCr30G	Good abrasion resistance, high strength, poor weldability, suitable for pulverized coal and ash pipe	DN100-1000
ZG42Cr2Si2MnMoG	Good abrasion resistance, high strength, poor weldability, suitable for pulverized coal and ash pipe
(Single metal pipe)	BTMCr30G	Good abrasion resistance, corrosion resistance, high strength, can not be welded, suitable for corrosion-resistant wear pipeline	DN30-1200
BTMCr26G	Good abrasion resistance, low strength, no soldering, suitable for pulverized coal piping	DN40-1200
BTMCr20G	Good abrasion resistance, low strength, no soldering, suitable for pulverized coal piping	DN100-1000
BTMCr15G	Good abrasion resistance, low strength, no soldering, suitable for pulverized coal piping
BTMCr12G	Good abrasion resistance, low strength, no soldering, suitable for pulverized coal piping
BTMCr8G	Good abrasion resistance, low strength, no soldering, suitable for pulverized coal piping
BTMCr2G	Good abrasion resistance, low strength, no soldering, suitable for pulverized coal piping
Anti-abrasion white cast iron （Bimetal Composite Pipe）	BTMCr30-G	Good erosion resistance, high strength, can be welded, suitable for limestone, gypsum, pulverized coal and ash pipe	DN30-1200
BTMCr26-G	Good abrasion resistance, high strength, can be welded, applicable to pulverized coal and ash pipe, used for slurry, coal slurry conveying	DN40-1200
BTMCr20-G	Good abrasion resistance, high strength, can be welded, applicable to pulverized coal and ash pipe, used for slurry, coal slurry conveying	DN40-1000
BTMCr15-G	Good abrasion resistance, high strength, can be welded, suitable for pulverized coal and ash pipe
BTMCr12-G	Good abrasion resistance, high strength, can be welded, suitable for pulverized coal and ash pipe
BTMCr8-G	Good abrasion resistance, high strength, can be welded, suitable for pulverized coal and ash pipe
BTMCr2-G	Good abrasion resistance, high strength, can be welded, suitable for pulverized coal and ash pipe
Inner wall surfacing composite pipe	DNM-IV-G	Excellent abrasion resistance, can be welded, suitable for pulverized coal and ash pipe	≥DN200
DNM-V-G	Excellent abrasion resistance, can be welded, suitable for pulverized coal and ash pipe
Alumina ceramic composite lined pipe	Aluminum Thermal MethodTR-G Ceramic Lined composite steel pipe	Wear resistance is very good, high strength, can be welded, easy installation, applicable to pulverized coal and ash pipe, hot air pipe and economizer, hot air pipe, powder conveying, the product cost-effective.	DN32-1200
Paste methodTC-G	Good abrasion resistance, high strength, can not be welded, suitable for pulverized coal and ash pipe, desulfurization slurry pipe and variable diameter pipe	≥DN200
Rubber composite lined Pipe	XS-G	Good abrasion resistance, high strength, no welding, suitable for operating temperature -40~100℃ slag pipe	DN50-1200
High temperature wear-resisting liner compound pipe	WM-G	Good wear resistance, high strength, can be welded, suitable for working temperature less than 1800 ℃ dry powder pipe, hot air pipe	≥DN100
Cast stone composite lined pipe	ZS-G	Good abrasion resistance, low casting strength, high brittleness, can not be welded, applicable to pulverized coal and ash pipe, desulfurization slurry pipe	≥DN40
SIC lined composite pipe	SiC-G	Good abrasion resistance, can not be welded, suitable for pulverized coal and ash pipe, desulfurization slurry pipe	≤1200

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Application of Abrasion resistant pipe in Dense Medium System

Serious wear and tear of the pipeline not only caused a lot of material waste and media running, running, dripping, leakage, and frequent pipeline maintenance replacement, increasing the labor intensity of workers, increased production costs.

As the medium pipeline is the transmission of high hardness, abrasive strong media suspension, the pressure of the feed cyclone into the tube, in addition to transport media suspension, but also includes coal and gangue. Therefore, compared with the slime mixed pipeline, the media pipe wear speed faster, especially the pressure pipe, such as the cyclone into the material tube, disengage sieve into the material and so on. According to the different materials and flow channels, the general life of the metal pipe material in about a few months to a year or so.

Coal preparation plant site

Many types of Abrasion resistant pipe, pipe diameter needs to be measured on-site

In recent years, wear-resistant technology and the rapid development of wear-resistant materials, Abrasion resistant pipe technology in addition to metal mines, construction, power plants and other areas of application, in the field of heavy media coal preparation has also been widely promoted, greatly improving the heavy pipe Of the service life, reducing the maintenance workload and material consumption, and promote the rapid development of heavy media coal preparation technology.

Commonly used wear-resistant media tube

Common wear-resistant pipe mainly stone pipe, ceramic wear-resistant pipe, alloy wear-resistant pipe. Cast stone is a natural rock as the main raw material, by ingredients, melting, burning, annealing made of an inorganic non-metallic materials. It has excellent wear resistance, corrosion resistance.

China’s metallurgical, thermal power, mining, chemical building materials and other departments are widely used cast stone materials. The main raw material for the production of cast stone is the broadly distributed basalt and diabase, which are basic magmatic rocks, and the chemical composition is relatively stable. Cast pipe than the alloy tube wear, tough, and has a high corrosion resistance, can be resistant to hydrofluoric acid and overheating of any acid and alkali corrosion. But the cast stone tube density is high, brittle, impatient impact, easy to break, the production process is complex, installation and maintenance is not convenient.

Ceramic wear tube is made of self-propagating high temperature synthesis centrifuge. The seamless steel pipe on the centrifuge tube mold, in the steel pipe by adding iron and aluminum powder mixture. This mixture is called aluminum heat in chemistry. Centrifuge tube mold rotation to a certain speed, the Mars ignited aluminum heat agent, aluminum heat agent immediately burn their own, burning quickly spread, and in the spread of a violent chemical reaction, aluminum heat agent after the reaction of corundum and iron, At the same time release a lot of heat, is the original material in the steel pipe and the reaction after the product, even if the melting point of 2045 ° corundum will all melt, because the reaction is very fast, only a few seconds, the molten reactant in the centrifugal force, Size to be separated. Iron is centrifugal force thrown to the inner wall of steel, Al2O3 is distributed in the inner layer of iron. As the steel pipe quickly heat and heat transfer, Al2O3 and Fe quickly reached the freezing point, and soon stratified solidification. The final formation of ceramic wear-resistant tube from the inside out, respectively, corundum ceramic layer, iron-based transition layer, and the external steel pipe layer. High temperature molten iron liquid.

And the Al2O3 liquid, contact with the inner wall of the steel pipe, so that the inner wall of the steel pipe in the semi-molten state, so that the formation of iron and steel pipe metallurgical structure, iron layer and corundum ceramic layer between the liquid formation of a strong combination of its combined strength (that is, Laminated strength)> 15MPa; ceramic wear-resistant tube crushing strength (that is, from the tube outside the tube when the strength of ceramic crushing)> 350MPa.

Ceramic tile lined pipe & fittings

Ceramic tile lined pipe and the traditional steel pipe, wear-resistant alloy cast steel pipe, cast stone pipe and steel pipe and other essential differences. Ceramic tile lined pipe is a seamless steel pipe, the inner layer is corundum, this corundum is molten state under the action of centrifugal casting. Corundum layer hardness up to HV1200 ~ 1400, it is better than the ordinary combination of corundum grinding wheel performance is much better, can be corundum grinding wheel wear off.

Ceramic tube wear resistance is mainly by the inner layer of a few millimeters thick corundum layer, which wear-resistant alloy cast steel pipe, cast stone pipe both by the composition and organization, but also by the thickness of the anti-wear has been a qualitative leap. The same specifications and unit length of the quality of Ceramic tile lined pipe only wear-resistant alloy steel pipe 1/2, cast pipe 1/3; the cost per meter project reduced by 30% to 40%; so ceramic wear pipe in addition to performance Superior, the project cost also has obvious advantages.

Ceramic tile lined pipe with good thermal shock resistance, this performance in the construction of useful. As the outer layer of steel, coupled with the inner temperature does not crack, in the construction, the flange, purge mouth

And so can be welded, can also be used direct welding method for pipe connection, which wear-resistant alloy cast stone pipe and cast stone pipe in the construction is not easy welding and welding can not be better. In case the production site due to special reasons, ceramic wear tube rupture situation, can be immediately emergency welding to ensure safe production and prevent environmental pollution. It should be noted that the thickness of the ceramic layer in the Ceramic tile lined pipe is not uniform, and it is possible to break out during the transportation, installation, tapping and bending deformation between the two stands, resulting in uneven wear during operation and affecting the use Life, and even cause short-term local steel pipe damage.

SHS ceramic lined pipes

Ceramic (Corundum: a-Al2O3) lined abrasion resistant straight pipe and fittings are lined with highly abrasion resistant ceramic by SHS ——-Self-propagating High-temperature Synthetic process.

Ultra-high composite wear-resistant pipe is a combination of internal and external pipe. It is a polymer material as the main material, adding the necessary additives, additives made into wear-resistant inner tube to Q235 steel plate as raw material, coil welded together made of such pipes with high wear resistance, good corrosion resistance (Strength, toughness), impact, play a supporting role, to withstand external pressure, so as to avoid collapse; and to adapt to changes in ambient temperature, light weight, easy to operate processing. Ultra-wear-resistant composite pipe wear resistance, long life, mechanical noise, the use of the product can change the coal preparation plant before the frequent replacement of pipes, downtime for a long time, the amount of maintenance of the situation, that is, improve the efficiency of the coal preparation plant, But also reduce the labor intensity of workers, reducing the maintenance workload. Table 10-16 for the ceramic wear-resistant tube and super-wear-resistant composite pipe technical and economic indicators, for reference.

Alumina ceramic sleeve lined pipe elbow

The Alumina ceramic sleeve lined pipe elbow as a whole part, and then assemble it into the steel pipe with our high-strength-temperature-resistant epoxy adhesive.

Alumina ceramic sleeve lined pipe elbow

ceramic sleeve lined elbow 45d

ceramic sleeve lined elbow 90d

The pipe consists of three layers: smooth ceramic lining (compact corundum), ceramic and metal transition layer and the outer steel pipe.

Wear resistant alumina ceramic rings welded in steel pipes

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These Ceramic Tubes are identical to the ones we use in our production, so high quality, consistency, and uniformity are assured.

The combination of high rigidity of ceramic and high elasticity of steel gives the pipe unmatchable features as an abrasion resistant, heat resistant and corrosion resistant material for use in the fields of power generation, metallurgy, mining, and chemical industry etc.. It has many advantages over steel pipes, cast stone pipes, and steel-plastic compound pipes.

High alumina ceramic linings are curved, piping and elbows are reliable, maintain close manufacturing tolerances, and are ready to install, thus facilitating quick replacement and free operation for long lasting trouble. Ceramic liner equipment, including ceramic wire tube, ceramic liner elbow, ceramic liner cone, ceramic turret, ceramic-lined hydrocyclone, ceramic liner, ceramic lined valves to help users obtain the maximum efficiency of the equipment.

Wear abrasion stainless ceramic pipes with below advantages:

1. Better purity for inside and outside pipe materials;
2. More abrasive;
3. Higher corrosion resistance;
4. Stronger impacting resistance;
5. Better high temperature resistance
6. Smaller flatness of inside pipe(ceramic flatness≤0.5mm)

In addition, the flatness of ceramic casing is also an important factor affecting the size of lithium battery materials.We did a lot of analysis and improved our manufacturing techniques to solve both of these problems.Now it can help lithium battery delivery systems better solve these problems, with better material purity, longer service life and better economic benefits.