First, GB/T8162-2008


Structural seamless steel pipe


Mainly used for general engineering structures and mechanical structures.


Its representative material (brand): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.

Second, GB/T8163-2008
Seamless steel pipe for conveying fluid
Mainly used for conveying fluid pipelines on engineering and large equipment.
The representative material (brand) is 20, Q345, etc.


Third, GB3087-200
Seamless steel pipe for low and medium pressure boilers

It is mainly used for pipes for conveying low and medium pressure fluids in industrial boilers and domestic boilers. Hot-rolled and cold-drawn (rolled) of high-quality carbon structural steel used for the manufacture of superheated steam pipes, boiling water pipes and locomotive boiler superheated steam pipes, large smoke pipes, small smoke pipes and arch brick pipes Seam steel pipe.
The representative material is steel No. 10 and No. 20.

Fourth, GB/T18984-2016

Seamless steel pipe for low temperature pipeline
It is mainly used for -45°C~-196°C low temperature pressure vessel pipes and seamless steel pipes for low temperature heat exchanger pipes.


The representative materials are 16MnDG, 10MnDG, 09DG, 09Mn2VDG, 06Ni3MoDG and the like.

V. GB5310-2008

Seamless steel pipe for high pressure boiler
It is mainly used for high temperature and high pressure conveying fluid gathering boxes and pipelines on power stations and nuclear power plant boilers.

Representative materials are 20G, 12Cr1MoVG, 15CrMoG, etc.



Six, GB5312-1999
Carbon steel and carbon-manganese steel seamless steel pipe for ships

It is mainly used for I and II pressure pipes for ship boilers and superheaters. It is suitable for the manufacture of Class I pressure piping, Class II pressure piping, boilers and superheaters for ships
Representative materials are 360, 410, 460 steel grades, etc.

Seven, GB6479-2000

Seamless steel pipe for high pressure fertilizer equipment


It is mainly used to transport high temperature and high pressure fluid pipelines on fertilizer equipment.

Representative materials are 20, 16Mn, 12CrMo, 12Cr2Mo and the like.

Eight, GB9948-2006


Seamless steel pipe for petroleum cracking

Mainly used in boilers, heat exchangers and pipelines for transporting fluids in petroleum smelters.


The representative materials are 20, 12CrMo, 1Cr5Mo, 1Cr19Ni11Nb and the like.

Nine, GB18248-2000
Gas cylinder with seamless steel pipe


Mainly used in the production of various gas and hydraulic cylinders.

The representative materials are 37Mn, 34Mn2V, 35CrMo, and the like.




X. GB/T17396-1998

Hot rolled seamless steel pipe for hydraulic prop
Mainly used to make coal mine hydraulic supports and cylinders, columns, and other hydraulic cylinders and columns.

Its representative materials are 20, 45, 27SiMn and the like.

XI, GB/T3639-1983
Cold drawn or cold rolled precision seamless steel pipe

It is mainly used for mechanical structures and carbon pressure equipment, and requires steel pipes with high dimensional accuracy and good surface finish.


It stands for material 20, 45 steel and so on.

12. GB/T8713-1988


Precision inner diameter seamless steel pipe for hydraulic and pneumatic cylinders




Mainly used for the production of hydraulic and pneumatic cylinders, cold drawn or cold rolled seamless steel tubes with precise inner diameter.


Its representative material is 20, 45 steel and so on.


XIII. GB13296-1991


Stainless steel seamless pipe for boilers and heat exchangers




Mainly used in boilers, superheaters, heat exchangers, condensers, catalytic tubes, etc. of chemical enterprises. It has steel pipes with high temperature resistance, high pressure and corrosion resistance.


The representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and the like.






XIV/T5035-1993


Seamless steel pipe for automobile semi-axle casing




It is mainly used for the production of high-quality carbon structural steel and alloy structural steel hot-rolled seamless steel tubes for automobile semi-axle bushings and axles for drive axles.


The representative materials are 45, 45Mn2, 40Cr, 20CrNi3A and the like.






Fifteen, GB/T3090-2000


Stainless steel small diameter seamless steel pipe




Mainly used in aerospace, electromechanical, instrumentation components, medical needles and other general purpose austenitic stainless steel small diameter seamless steel pipe.


The representative materials are 0Cr18Ni9, 00Cr19Ni10, 0Cr18Ni10Ti, 0Cr17Ni12Mo2 and the like.






XVI, GB3093-1986


High pressure seamless steel pipe for diesel engine




Mainly used for high pressure fuel pipe of diesel engine injection system. The steel pipe is generally a cold drawn pipe.


Its representative material is 20A.






XVII, GB/T3094-1986


Cold drawn seamless steel pipe shaped steel pipe




Mainly used to make various structural parts and parts.


It is made of high quality carbon structural steel and low alloy structural steel.






Eighteen, GB/T14975-1994


Stainless steel seamless steel pipe for structure




It is mainly used for general structure (hotel, restaurant decoration) and steel pipe for atmospheric and acid corrosion and has certain strength for mechanical structure of chemical enterprises.


The representative materials are 0-3Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti and the like.






XIX. GB/T14976-1994


Stainless steel seamless pipe for fluid transportation




Mainly used for conveying corrosive media.


The representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti and the like.






Twenty, API SPEC5CT-1999


Casing and tubing specifications




The American Petroleum Institute (American Petreleum Instiute, "API") is compiled and published worldwide. Among them: Casing: a pipe that protrudes into the well from the ground surface and is used as a lining of the well wall, and the pipes are connected by a coupling. The main materials are steel grades such as J55, N80, P110, and steel grades such as C90 and T95 which are resistant to hydrogen sulfide corrosion. Its low steel grade (J55, N80) can be welded steel pipe. Tubing: A pipe that is inserted into the casing from the surface of the ground up to the oil layer, and the pipes are connected by a coupling or an integral body. Its role is to pump oil from the oil layer to the ground through the oil pipe.






The main materials are J55, N80, P110 and steel grades such as C90 and T95 which are resistant to hydrogen sulfide corrosion.