GB/T8162-1999 (
seamless steel pipe for structure). Mainly used for general structural and mechanical structures. Its representative material (brand): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo and so on.
GB/T8163-1999 (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.
GB3087-1999 (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. The representative material is steel No. 10 and No. 20.
GB5310-1995 (seamless steel tubes for high pressure boilers). 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.
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. Representative materials are 360, 410, 460 steel grades etc.
GB1479-2000 (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 etc.
GB9948-1988 (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 etc.
GB18248-2000 (seamless steel pipe for gas cylinders). Mainly used in the production of various gas and hydraulic cylinders. The representative materials are 37Mn, 34Mn2V, 35CrMo etc.
GB/T17396-1998 (hot rolled seamless steel pipe for hydraulic props). Mainly used to make coal mine hydraulic supports and cylinders, columns, and other hydraulic cylinders and columns. Its representative materials are 20, 45, 27SiMn etc.
GB3093-1986 (high-pressure seamless steel pipe for diesel engines). Mainly used for high pressure fuel pipe of diesel engine injection system. The steel pipe is generally a cold drawn pipe, and its representative material is 20A.
GB/T3639-1983 (cold drawn or cold rolled precision seamless steel pipe). It is mainly used for mechanical structures, carbon pressure equipment, steel tubes with high dimensional accuracy and good surface finish. It stands for material 20, 45 steel and so on.
GB/T3094-1986 (cold drawn seamless steel pipe shaped steel pipe). Mainly used in the production of various structural parts and parts, the material is high quality carbon structural steel and low alloy structural steel.
GB/T8713-1988 (precision inner diameter seamless steel pipe for hydraulic and pneumatic cylinders). It is mainly used for the production of cold drawn or cold rolled seamless steel tubes with precision inner diameter for hydraulic and pneumatic cylinders. Its representative material is 20, 45 steel and so on.
GB13296-1991 (stainless steel seamless steel tubes for boilers and heat exchangers). Mainly used in boilers, superheaters, heat exchangers, condensers, catalytic tubes, etc. of chemical enterprises. High temperature resistant, high pressure, corrosion resistant steel pipe. The representative materials are 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr18Ni12Mo2Ti etc.
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 etc.
GB/T14976-1994 (stainless steel seamless pipe for fluid transportation). Mainly used for conveying corrosive media. Representative materials are 0Cr13, 0Cr18Ni9, 1Cr18Ni9Ti, 0Cr17Ni12Mo2, 0Cr18Ni12Mo2Ti etc.
