1. Hardness difference from surface to center is less than hrc2. 2. The pearlitic cr-mo alloy steel mill liners are widely used for ag mills, sag mills, large ball mills. 3. The steel liners have higher reliability in ag mills and sag mills. . Packed by strong steel pallets.
4. Microstructure: fine martensite + carbide + austenite(less than 6%); 5. International standard to be applied: as2027, astm a532 and bs4844. Packed by strong steel pallets
Value & even hardness distribution, we design a special quenching process, called foggy quenching technique. 4. Internal quality: we check the internal quality with ut test; 5. External quality: we check the external quality with mt test & visual inspection 6. Package: packed by steel pallets. 7. We supplied the end liners to korean clients. Packed by strong steel pallets
Anti-Corrosive steel pipe refers to the internal and external coating processing with anticorrosive functional materials or by using carbon steel seamless steel pipe, carbon steel spiral steel pipe or carbon steel straight seam steel pipe as base material. A steel pipe that can effectively prevent or slow down chemical or electrochemical corrosion reactions during transportation and use. Anti-corrosion steel pipe is mainly used in petroleum, chemical, gas, heat, sewage treatment, water, bridge, steel pipe and other engineering fields. 1 ASTM A789 Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe for General Service 2 ASTM A790 Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe 3 EN 10288 Steel Tubes and Fittings for Onshore and Offshore Pipelines 4 DIN 30670 Polyethylene Coatings on Steel Pipes and Fittings 5 JIS G3469 Polyethylene Coated Steel Pipe 6 GB/T 31940 Bi-Metal Composite Corrosion Resistance Steel Pipe for Fluid Transportation 7 SY/T 0413 Polyethylene Caoting for Buried Steel Pipeline
Boiler tube is divided into general boiler tube and high-pressure boiler tube according to the use temperature. General boiler pipe temperature below 350â??, mainly used to manufacture water wall tube, boiling water tube, superheated steam tube, locomotive boiler superheated steam tube and so on.The heat exchanger tube is one of the components of the heat exchanger, which is used to exchange heat between two media, and has high thermal conductivity and good isothermal property. It is a device that can quickly transfer heat energy from one point to another and has little heat loss, so it is called a heat transfer superconductor with a thermal conductivity of thousands of times that of copper.The common materials of boiler and heat exchange tube are carbon steel, low alloy steel, stainless steel, copper, copper nickel alloy, aluminum alloy, titanium and so on. According to the production method it can be divided into seamless steel pipe and welded steel pipe. 1 ASTM A178 Electric-Resistance-Welded(ERW) Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes 2 ASTM A179 Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes 3 ASTM A192 Seamless Carbon Steel Boiler Tubes for High Pressure 4 ASTM A209 Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes 5 ASTM A210 Seamless Steel Boiler and SuperheaterTubes 6 ASTM A213 Seamless Ferritic and Austenitic Alloy-Steel Boiler Superheater and Heat-Exchanger Tubes 7 ASTM A214 Electric-Resistance-Welded(ERW) Carbon Steel Heat-Exchanger and Condenser Tubes 8 ASTM A249 Welded Austenitic Steel Boiler Super-heater Heat-exchanger and Condenser Tubes 9 ASTM A250 Electric-Resistance-Welded(ERW) Ferritic Alloy-Steel Boiler and Superheater Tubes 10 JIS G3461 Carbon Steel Boiler and Heat Exchanger Tubes 11 JIS G3462 Alloy Steel Boiler and Heat Exchanger Tubes 12 JIS G3463 Stainless Steel Boiler and Heat Exchanger Tubes 13 GB 3087 Seamless Steel Tube for Low and Medium Pressure Boiler 14 GB 5310 Seamless Steel Tube and Pipes for High Pressure Boiler 15 GB 13296 Seamless Stainless Steel Tube for Boiler and Heat Exchanger 16 GB/T 24593 Welded Austenitic Stainless Steel Tube for Boiler and Heat Exchanger
Low temperature steel pipe refers to the steel pipe used in low temperature environment below -10. The steel usually used at low temperature of -10~-196 is called low temperature steel, and the steel used at low temperature below -196 is called ultra-low temperature steel, which has enough notch toughness. Low temperature steel pipe is mainly used in the production of ethylene, propylene, urea, synthetic ammonia, compound chemical fertilizer and washing, purification, desulphurization and degreasing in pharmaceutical industry with petroleum, chemical, natural gas and coal as raw materials, as well as cryogenic equipment manufacturing, ultra-low temperature cold storage, transportation of ultra-low temperature liquefied gas pipeline and its pipe components. High temperature steel pipe is the steel pipe used in high temperature environment. This kind of steel pipe needs to have certain high temperature resistance, will not decline in high temperature environment, but also has certain corrosion resistance.High temperature steel pipe is often used in exhaust pipe, heat treatment furnace, heat switch, incinerator and other pipeline projects that require heat resistance, because the medium in chemical pipeline, power plant boiler pipeline is mostly some high temperature gas, liquid, some also have certain corrosion. 1 ASTM A106 Seamless Carbon Steel Pipe for High Temperature Service 2 ASTM A268 Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service 3 ASTM A269 Seamless and Welded Austenitic Stainless Steel Tubing for General Service 4 ASTM A312 Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes 5 ASTM A333 Seamless and Welded Steel Pipe for Low Temperature Service 6 ASTM A334 Seamless and Welded Carbon and Alloy Steel Tubes for Low Temperature Service 7 ASTM A335 Seamless Ferritic Alloy-Steel Pipe for High Temperature Service 8 ASTM A358 Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe 9 ASTM A376 Seamless Austenitic Steel Pipe for High Temperature Service 10 ASTM A409 Welded Large Diameter Austenitic Steel Pipe for Corrosive or High Temperature Service 11 EN 10216-2&4 Seamless Steel Tubes for Pressure Purposes with Specified Elevated and Low Temperature Properties 12 EN 10217-2&4&5&6 Welded Steel Tubes for Pressure Purposes with Specificated Elevated and Low Temperature Properties 13 JIS G3456 Carbon and Alloy Steel Pipes for High Temperature Service 14 JIS G3458 Alloy Steel Pipes for High Temperature Sevice 15 JIS G3459 Stainless Steel Pipes for Corrosion Resistance and Low&High Temperature Service 16 JIS G3460 Carbon and Alloy Steel Pipes for Low Temperature Service 17 JIS G3464 Steel Heat Exchanger Tubes for Low Temperature Service 18 GB/T 18984 Seamless Steel Pipes for Low Temperature Service Piping 19 GB/T 32970 Longitudinal Submerged-Arc Welded Steel Pipe for High Pressure Service at High Temperatures
Supplier: Specialty metal products: titanium, stainless steel, and copper manufactured products, bars, pipe, tubular, sheet, plate, coils, etc. scrap metal: used rails, and copper mill berry & cathode. crude oil, gas & fuel products: en590, jet fuel, ago, bonny light crude oil, gasoline, espo, d6, d2, petcoke, etc. food products: sugar, soybeans, wheat, etc. fertilizers: urea and dap ore & minerals: lithium
According to the purpose of welding steel pipe can be divided into general welding pipe, galvanized welding pipe, oxygen blowing welding pipe, wire casing, metric welding pipe, roller pipe, deep well pump pipe, automobile pipe, transformer pipe, welding thin wall pipe, welding special-shaped pipe and spiral welding pipe. 1 ASTM A134 Electric-Fusion (Arc)-Welded (Sizes NPS 16 and Over) Steel Pipe 2 ASTM A135 Electric-resistance-welded(ERW) steel pipe in NPS 2 to NPS 30 3 ASTM A139 Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over) 4 ASTM A178 Electric-Resistance-Welded(ERW) Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes 5 ASTM A214 Electric-Resistance-Welded(ERW) Carbon Steel Heat-Exchangerand Condenser Tubes 6 ASTM A250 Electric-Resistance-Welded(ERW) Ferritic Alloy-Steel Boiler and Superheater Tubes 7 ASTM A252 Welded and Seamless Steel Pipe Piles 8 ASTM A333 Seamless and Welded Steel Pipe for Low Temperature Service 9 ASTM A334 Seamless and Welded Carbon and Alloy Steel Tubes for Low Temperature Service 10 ASTM A381 Metal-Arc-Welded Steel Pipe for Use With High-Pressure Transmission Systems 11 ASTM A500 Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes 12 ASTM A501 Hot-Formed Welded and Seamless Carbon Steel Structural Tubing 13 ASTM A513 Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing 14 ASTM A523 Plain end Seamless and Electric Resistance Welded Steel Pipe for High Pressure Pipe Type Cable Circuits 15 ASTM A53 Seamless and Welded Black and Hot-dipped Galvanized Steel Pipe 16 ASTM A618 Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing 17 ASTM A671 Electric-Fusion-Welded Steel Pipe for Atmospheric and Lower Temperatures 18 ASTM A672 Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures 19 ASTM A691 Carbon and Alloy Steel Pipe Electric-Fusion-Welded for High-Pressure Service at High Temperatures 20 ASTM A714 High Strength Low Alloy Welded and Seamless Steel Pipe 21 ASTM A795 Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use
According to the purpose of welding steel pipe can be divided into general welding pipe, galvanized welding pipe, oxygen blowing welding pipe, wire casing, metric welding pipe, roller pipe, deep well pump pipe, automobile pipe, transformer pipe, welding thin wall pipe, welding special-shaped pipe and spiral welding pipe. 1 GB/T 13793 Steel Pipes with a Longitudinal Electric Resistance Weld 2 GB/T 14980 Major Diameter Welded Steel Pipes for Low Pressure liquid Service 3 GB/T 30063 Longitudinal Submerged Arc Welded Steel Tubes for Structural Purpose 4 GB/T 3091 Welded Steel Pipes for Low Pressure Liquid Delivery 5 GB/T 3092 Welded Steel Pipe for Low Pressure Service 6 GB/T 31315 Cold Drawn or Cold Rolled Precision Weld Steel Tubes for Mechanical Structures 7 GB/T 31940 Bi-Metal Composite Corrosion Resistance Steel Pipe for Fluid Transportation 8 GB/T 32970 Longitudinal Submerged-Arc Welded Steel Pipe for High Pressure Service at High Temperatures 9 GB/T 9711 Steel Pipe for Pipeline Transportation System
