Cold Drawn 48.3MM SA 335 P92 Alloy Steel Seamless Pipe For Steel Boiler

SA 335 P92 Alloy Steel Pipe, Cold Drawn, 48.3MM, SCH XS, for Steel Boiler, Superheater.

Introduction

Alloy steel pipe in English (Alloy steel pipe) the greatest advantage can be 100% recovery, in line with the national strategy of environmental protection, energy saving, resource saving, national policy to encourage the expansion of high-pressure alloy pipe applications. At present, the proportion of alloy pipe consumption in total steel in China is only half of that in developed countries, and the expansion of alloy pipe use field provides a broader space for the development of the industry. According to the research of the expert group of the alloy pipe branch of China Special Steel Association, the demand for high pressure alloy pipe long material in China will increase by 10-12% per year in the future. Alloy pipe is defined by steel pipe according to production material (that is, material), as the name implies is alloy pipe, and seamless pipe is defined by steel pipe according to production process (seamless), which is different from seamless pipe is sewn pipe. Including straight seam welded pipe and spiral pipe.

Alloy seamless steel pipe contains elements such as silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, rare earth, etc.
Description
Alloy seamless steel pipe (Seamless Steel Tube) with hollow section, no joints around the strip steel. The steel pipe has a hollow section and is widely used as a pipeline for conveying fluid, such as oil, natural gas, gas, water and some solid materials. Compared with solid steel such as round steel, alloy seamless steel pipe is light weight when bending and torsion strength is the same. It is an economic section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil conveying, stair handrails, bicycle frames and steel scaffolding used in construction. Making ring parts with alloy seamless steel pipe can improve material utilization, simplify manufacturing process, and save material and processing time, such as rolling bearing ring, Jack sleeve and so on. At present, steel pipe has been widely used to manufacture. Alloy seamless steel pipe or all kinds of conventional weapons indispensable materials, gun barrel, barrel and so on must be made of steel pipe. In addition, the ring section under internal or external radial pressure, the force is more uniform, therefore, most alloy seamless steel pipe is a circular pipe.
Production process
Hot rolling (extruded seamless steel pipe): pipe billet → heating → perforation → three-roll oblique rolling, continuous rolling or extrusion → pipe → diameter (or diameter reduction) cooling pipe straightening → hydraulic test (or flaw detection) marking → storage.
Cold drawing (rolling) seamless steel pipe: round tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating), multi-pass cold drawing (cold rolling)→ billet tube heat treatment, straightening → water pressure test (flaw detection) marking → storage.
Classification
Seamless steel pipe for structure: mainly used in general structure and mechanical structure. Its representative material (brand): carbon steel 20,45 steel; alloy steel Q345,20Cr,40Cr,20CrMo,30-35CrMo,42CrMo.

Seamless steel pipe for conveying fluid: mainly used for conveying fluid pipes on engineering and large equipment. representative material (brand number) is 20, Q345, etc.
Seamless steel pipe for low medium pressure boiler: mainly used in industrial boiler and domestic boiler to transport low medium pressure fluid pipeline. Representative material is 10,20 steel.
Seamless steel pipe for high pressure boiler: It is mainly used for high temperature and high pressure conveying fluid header and pipeline on power station and nuclear power plant boiler. Representative material is 20 G,12Cr1MoVG,15CrMoG, etc.
Carbon steel and carbon manganese steel seamless steel pipe for ship: mainly used for ship boiler and superheater I,II grade pressure resistant pipe. Representative material is 360,410,460 steel grade etc.
Seamless steel pipe for high pressure chemical fertilizer equipment: mainly used for conveying high temperature and high pressure fluid pipeline on chemical fertilizer equipment. representative material is 20,16 Mn,12CrMo,12Cr2Mo etc.
Seamless steel pipe for petroleum cracking: boiler, heat exchanger and its conveying fluid pipeline mainly used in petroleum smelter. and its representative material is 20,12 CrMo,1Cr5Mo,1Cr19Ni11Nb, etc.
Seamless steel pipe for gas cylinders: mainly used to make various gas and hydraulic cylinders. Its representative material is 37 Mn,34Mn2V,35CrMo and so on.
Hot rolled seamless steel pipe for hydraulic prop: mainly used to make coal mine hydraulic support and cylinder, column, and other hydraulic cylinder, column. and its representative material is 20,45,27 SiMn etc.
High pressure seamless steel pipe for diesel engine: mainly used for high pressure tubing of diesel engine injection system. Generally, its steel pipe is cold-drawn pipe, its representative material is 20 A.
Cold drawn or cold rolled precision seamless steel pipe: mainly used for mechanical structure, carbon pressure equipment, high dimensional accuracy, good surface finish steel pipe. Its representative material 20,45 steel and so on.

Material
12Cr1MoV,P22(10CrMo910) T91, P91, P9, T9, WB36, Cr5Mo (P5, STFA25, T5,)15CrMo (P11, P 12, STFA22),13CrMo44, Cr5Mo ,15CrMo ,25CrMo ,30CrMo ,40CrMo.
Implementation criteria
DIN17175-79,JISG3467-88,JISG3458-88,GB5310-2008,GB9948-2006,ASTMA335/A335m,ASTMA213/A213m.

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