12m Length Alloy Steel Seamless Pipe

API 5L X60 ERW Pipe, 6 inch, 12 meters, SCH.STD, varnished surface, BE Ends,API 5L PSL2, ASME B36.10.

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, the 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.

The name of steel is the name of each specific steel product a common language for people to understand steel. China's rigid sign representation method generally uses the Chinese phonetic alphabet, chemical elements ​ symbols and Arabic numerals to express the following we specifically introduce the alloy steel material elements and symbols meaning:

1.The two digits at the beginning of the number represent the carbon content of the steel, expressed as a fraction of the average carbon content, such as <unk5>40

2. Main alloying elements in steel, Except for individual microalloy elements, Generally expressed as a few percent. And when the average alloy <1.5%, In steel, only element symbols are usually marked, Without indicating the content, But in exceptional circumstances, The element symbol may also be marked with the number "1", Such as steel "12 CrMoV" and "12 Cr1MoV", The chromium content of the former is 0.4-0.6%, The latter is 0.9-1.2 per cent, All the other ingredients are the same, When the average content of alloying elements ≥1.5%,≥2.5%,≥3.5%…… The content should be marked after the element symbol, 2,3,4... For example Cr2Ni4WA.18