OEM China 2×3 Galvanized Steel Tubing - ASTM A335 Seamless Pipe Transport boiler piping – Zheyi

ASTM A335 Seamless Pipe, is a kind of seamless steel tube, its performance is much higher than the general seamless steel tube, because this kind of steel tube contains more Cr, its high temperature resistance, low temperature resistance, corrosion resistance is less than other seamless steel tube, so alloy tube is widely used in petroleum, chemical, electric power, boiler and other industries

ASTM A335 Seamless Pipe, Elements include silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, rare earth and so on.

ASTM A335 Seamless Pipe, A long strip of steel with a hollow section and no seams around it. The steel pipe has a hollow section and is widely used for conveying fluid pipelines, such as conveying oil, natural gas, gas, water and some solid materials. Alloy seamless steel pipe and round steel and other solid steel, in flexural and torsional strength at the same time, the weight is lighter, is a kind of economic section steel, widely used in the manufacture of structural parts and mechanical parts, such as oil transportation, stair handrails, bicycle frame and construction of steel scaffolding. Making ring parts with alloy seamless steel pipe can improve material utilization rate, simplify manufacturing process, save material and processing time, such as rolling bearing ring, jack sleeve, etc., has been widely used in steel pipe manufacturing. Alloy seamless steel pipe or all kinds of conventional weapons indispensable material, barrel, barrel and so on to steel pipe to manufacture. In addition, the annular section under internal or external radial pressure, the force is more uniform, therefore, the vast majority of alloy seamless steel tubes are round

ASTM A335 Seamless Pipe, The Production Process

Hot rolling (extruded seamless steel tube) : round tube billet → heating → perforation → three-roll cross rolling, continuous rolling or extrusion → tube stripping → sizing (or reducing) → cooling → blank tube → straightening → water pressure test (or defect detection) → marking → storage.

Cold drawing (rolling) seamless steel tube: round tube billet → heating → perforation → heading → annealing → pickling → oiling (copper plating) → multi-pass cold drawing (cold rolling) → blank tube → heat treatment → straightening → water pressure test (flaw detection) → marking → storage

ASTM A335 Seamless Pipe, Classification

Seamless steel tube for structural use: mainly used for general structure and mechanical structure. Its representative material (brand) : carbon steel 20, 45 steel; Alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

Seamless steel pipe for conveying fluid: mainly used for conveying fluid pipe in engineering and large equipment. On behalf of the material (brand) 20, Q345, etc.

Seamless steel pipe for low and medium pressure boiler: it is mainly used for conveying low and medium pressure fluid in industrial boiler and domestic boiler. It means the material is 10 and 20 steel.

Seamless steel tube for high pressure boilers: mainly used for high temperature and high pressure conveying fluid containers and pipes in boilers of power stations and nuclear power plants. Material: 20G, 12Cr1MoVG, 15CrMoG, etc.

Marine carbon steel and carbon manganese steel seamless steel pipe: mainly used for Marine boiler and superheater I, II class pressure pipe, etc. On behalf of 360, 410, 460 steel grade.

Seamless steel pipe for high pressure chemical fertilizer equipment: mainly used for conveying high temperature and high pressure fluid pipe on chemical fertilizer equipment. The material is 20, 16Mn, 12CrMo, 12Cr2Mo, etc.

Seamless steel pipe for petroleum cracking: mainly used for boilers, heat exchangers and fluid conveying pipelines in petroleum smelters. Its representative material is 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and so on.

Seamless steel tube for gas cylinders: mainly used for making various gas and hydraulic cylinders. Its representative material is 37Mn, 34Mn2V, 35CrMo and so on.

Hot rolled seamless steel pipe for hydraulic support: mainly used for making hydraulic support, cylinder and column in coal mine, and other hydraulic cylinder and column. Its representative materials are 20, 45, 27SiMn and so on.

High pressure seamless steel pipe for diesel engine: mainly used for high pressure oil pipe of diesel engine injection system. Its steel pipe is generally cold drawn pipe, and its representative material is 20A.

Cold drawn or cold rolled precision seamless steel pipe: mainly used for mechanical structure, carbon pressing equipment, high dimensional accuracy, good surface finish steel pipe. Its representative material 20, 45 steel and so on.

Alloy tube material
12Cr1MoV, P22(10CrMo910)T91, P91, P9, T9, WB36 , Cr5Mo(P5, STFA25, T5,)15CrMo(P11, P12, STFA22), 13CrMo44, Cr5Mo, 15CrMo, 25CrMo, 30CrMo, 40CrMo.

National standard
Din17175-79, JISG3467-88, JISG3458-88, GB5310-2008, GB9948-2006, ASTMA335/A335m, ASTMA213/A213m

Specification

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