GB/T8162-2008 Seamless Steel Tubes for Structural Purposes
Mainly used for general engineering structures and mechanical structures.
Its representative material (grade): carbon steel 20, 45 steel; Alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
GB/T8163-2008 Seamless Steel Pipe for Fluid Transport
Mainly used for conveying fluid pipelines on engineering and large equipment.
The representative materials (grades) are 20, Q345, etc.
GB/T3087-2008 Seamless Steel Tubes for Low and Medium Pressure Boilers
Mainly used in pipelines for conveying low and medium pressure fluids in industrial and domestic boilers. High quality carbon structural steel hot rolled and cold drawn (rolled) seamless steel pipes used for manufacturing various types of low and medium pressure boiler superheated steam pipes, boiling water pipes, and locomotive boiler superheated steam pipes, large smoke pipes, small smoke pipes, and arch brick pipes.
The representative materials are grade 10 and 20 steel.
GB/T18984-2016 Seamless Steel Pipe for Low Temperature Pipelines
Mainly suitable for seamless steel pipes used in -45 ℃~-196 ℃ low-temperature pressure vessel pipelines and low-temperature heat exchanger pipelines.
Its representative materials are 16MnDG, 10MnDG, 09DG, 09Mn2VDG, 06Ni3MoDG, etc.
GB/T5310-2008 Seamless Steel Tubes for High Pressure Boiler
Mainly used for high-temperature and high-pressure conveying fluid headers and pipelines in power plants and nuclear power plant boilers.
The representative materials are 20G, 12Cr1MoVG, 15CrMoG, etc.
GB5312-1999 Seamless Carbon and Carbon Manganese Steel Pipe for Ships
Mainly used for Class I and II pressure pipes for ship boilers and superheaters. Suitable for manufacturing Class I pressure resistant piping systems, Class II pressure resistant piping systems, boilers, and superheaters used in ships.
The representative materials are 360, 410, 460 steel grades, etc.
GB6479-2013 Seamless Steel Pipe for High Pressure Fertilizer Equipment
Mainly used for transporting high-temperature and high-pressure fluid pipelines on fertilizer equipment.
The representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo, etc.
GB9948-2013 Seamless Steel Pipe for Petroleum Cracking
Mainly used for boilers, heat exchangers, and fluid pipelines in petroleum refineries.
Its representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb, etc.
GB18248-2000 Seamless Steel Tubes for Gas Cylinders
Mainly used for making various gas and hydraulic cylinders.
Its representative materials are 37Mn, 34Mn2V, 35CrMo, etc.
Hot rolled seamless steel pipes for hydraulic props
Mainly used for making hydraulic supports, cylinders, and columns in coal mines, as well as other hydraulic cylinders and columns.
Its representative materials are 20, 45, 27SiMn, etc.
GB/T3639-1983 Cold drawn or cold-rolled precision seamless steel pipes
Mainly used for mechanical structures and carbon compression equipment, steel pipes with high dimensional accuracy and good surface finish are required.
It represents materials such as 20 and 45 steel.
Precision inner diameter seamless steel pipes for hydraulic and pneumatic cylinders
Mainly used for making hydraulic and pneumatic cylinder barrels, cold drawn or cold-rolled seamless steel pipes with precise inner diameter dimensions.
Its representative materials are 20, 45 steel, etc.
Stainless steel seamless steel pipes for boilers and heat exchangers (GB13296-1991)
Mainly used in boilers, superheaters, heat exchangers, condensers, catalytic tubes, etc. in chemical enterprises. Steel pipes with high temperature, high pressure, and corrosion resistance.
Its representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, etc.
YB/T5035-1993 Seamless Steel Pipe for Automotive Half Axle Sleeve Pipe
Mainly used for producing high-quality carbon structural steel and alloy structural steel hot-rolled seamless steel pipes for automotive half axle sleeves and drive axle housing shaft tubes.
Its representative materials are 45, 45Mn2, 40Cr, 20CrNi3A, etc.
GB/T3090-2000 Stainless Steel Small Diameter Seamless Steel Pipe
Austenitic stainless steel small diameter seamless steel pipes mainly used for general purposes such as aerospace, electromechanical, instrument components, medical needles, etc.
Its representative materials are 0Cr18Ni9, 00Cr19Ni10, 0Cr18Ni10Ti, 0Cr17Ni12Mo2, etc.
High pressure seamless steel pipes for diesel engines (GB3093-1986)
Mainly used for high-pressure fuel pipes in diesel engine injection systems. The steel pipe is generally cold drawn.
Its representative material is 20A.
Cold drawn seamless steel pipes and shaped steel pipes
Mainly used for making various structural components and parts.
Its materials are high-quality carbon structural steel and low alloy structural steel.
GB/T14975-2002 Stainless Steel Seamless Steel Pipe for Structural Purposes
Steel pipes with atmospheric resistance, acid corrosion resistance, and certain strength are mainly used for general structures (hotel, restaurant decoration) and mechanical structures in chemical enterprises.
Its representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti, etc.
GB/T14976-2002 Stainless Steel Seamless Steel Pipe for Fluid Transport
Mainly used for transporting corrosive media in pipelines.
Its representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti, etc.
API SPEC 5CT Specification for Casing and Tubing
The American Petroleum Institute (“API” for short) has prepared and published a series of documents that are commonly used around the world. Among them: casing: a pipe that extends from the ground surface into the wellbore and serves as the lining of the wellbore. The pipes are connected by couplings. The main materials are steel grades such as J55, N80, and P110, as well as steel grades such as C90 and T95 that are resistant to hydrogen sulfide corrosion. Its low grade steel (J55, N80) can be welded steel pipes. Oil pipe: a pipe inserted from the ground surface into the casing until the oil layer, and connected to each other through a coupling or overall connection. Its function is to transport oil from the oil reservoir to the ground through oil pipes by the pumping unit.
The main materials are J55, N80, P110, as well as C90, T95 and other steel grades that are resistant to hydrogen sulfide corrosion.