The manufacturing standards of seamless steel pipes are the key basis for ensuring product quality, performance and safety. Due to the wide range of uses and different working conditions of seamless steel pipes, there are various standards. These standards are usually formulated by countries, industry associations or international organizations. The following is a careful summary of the seamless steel pipe manufacturing standard systems of several major countries/regions:
Chinese National Standard (GB/T)
China is one of the world's largest steel pipe producers, and its national standard system is very complete, covering seamless steel pipes of various uses and materials.
GB/T 8162 Seamless Steel Tubes for Structural Use: Seamless steel tubes for general structures and mechanical structures, not for conveying fluids.
GB/T 3087 Seamless Steel Tubes for Low and Medium Pressure Boilers: High-quality carbon structural steel hot-rolled and cold-drawn seamless steel tubes used for manufacturing superheated steam tubes, boiling water tubes for low and medium pressure boilers of various structures, superheated steam tubes, large and small smoke tubes, and arch brick tubes for locomotive boilers.
GB/T 5310 Seamless Steel Tubes for High-Pressure Boilers: This standard specifies seamless steel tubes made of high-quality carbon steel, alloy steel, and stainless heat-resistant steel for the heating surfaces of water-tube boilers operating at high pressures and above. It places stringent requirements on the material's high-temperature resistance and endurance strength.
GB/T 9711 "Petroleum and Natural Gas Industry - Steel Pipes for Pipeline Transportation Systems": This standard is divided into multiple parts and is mainly used for pipeline transportation systems in the oil and natural gas industry. It corresponds to the international API 5L standard and has strict requirements on the strength, toughness, weldability, etc. of steel pipes.
GB/T 14975 "Stainless steel seamless tubes for structural use": Stainless steel seamless tubes for general structures and mechanical structures.
GB/T 14976 "Stainless steel seamless pipes for fluid transportation": high-quality stainless steel seamless pipes used for conveying fluids.
GB/T 3639 Cold-drawn or cold-rolled precision seamless steel tubes: used in applications requiring high dimensional accuracy and surface finish, such as hydraulic and pneumatic systems.
American Standards (ASTM / API / ASME)
American standards have a wide influence internationally, especially in the fields of oil and gas, electricity and chemicals.
ASTM A53 "Steel Pipe, Black and Hot-Dip Galvanized, Welded and Seamless": Seamless and welded steel pipe for general purposes.
ASTM A106 Seamless Carbon Steel Pipe for High-Temperature Service: Widely used in high-temperature fluid transportation, such as in the power, petrochemical and other industries.
ASTM A333/A333M "Seamless and Welded Steel Pipe for Low-Temperature Service": Applicable to low-temperature pressure vessels and pipelines.
ASTM A213/A213M "Seamless ferritic and austenitic alloy steel tubes for boilers, superheaters and heat exchangers": Applicable to high temperature and high pressure boilers and heat exchangers.
ASTM A335/A335M Seamless Ferritic Alloy Steel Pipe for High-Temperature Service: Used for high-temperature and high-pressure pipelines, such as in the power and petrochemical industries.
ASTM A312/A312M Seamless and Welded Austenitic Stainless Steel Pipe: Stainless steel pipe for general corrosion resistance and high temperature service.
API Spec 5L "Line Pipe Specification": An American Petroleum Institute (API) standard specifically for pipeline transportation systems in the oil and gas industry. It has strict requirements for steel pipe strength grades (such as X42, X52, X60, X70, etc.), toughness, weldability, dimensional accuracy, and surface quality.
API Spec 5CT "Casing and Tubing Specification": Oil casing and tubing used in oil and gas well drilling and production, including various strength grades (J55, K55, N80, L80, P110, etc.).
ASME (American Society of Mechanical Engineers) standards: Often used in conjunction with ASTM standards, Section II (Materials) and Section IX (Welding and Brazing Qualification) of the ASME Boiler and Pressure Vessel Code (BPVC) provide detailed regulations for the selection and welding of steel pipes.
European Standards (EN)
European standards (especially EN standards) are widely adopted in EU member states and many other countries.
EN 10216 Series "Seamless Steel Tubes for Pressure Purposes":
EN 10216-1 "Seamless Steel Tubes for Pressure Purposes - Part 1: Non-alloy Steel Tubes with Specifying Room-Temperature Properties"
EN 10216-2 "Seamless Steel Tubes for Pressure Purposes - Part 2: Non-alloy and Alloy Steel Tubes with Specifying Elevated Temperature Properties"
EN 10216-3 "Seamless Steel Tubes for Pressure Purposes - Part 3: Alloy Fine Grain Steel Tubes with Specifying Room-Temperature and Elevated Temperature Properties"
EN 10216-4 "Seamless Steel Tubes for Pressure Purposes - Part 4: Non-alloy and Alloy Steel Tubes with Specifying Low-Temperature Properties"
EN 10216-5 "Seamless Steel Tubes for Pressure Purposes - Part 5: Stainless Steel Tubes"
EN 10297-1 "Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes - Part 1: Non-alloy and Alloy Steel Tubes": Applicable to mechanical structures.
EN 10204 "Metallic Products Inspection Documents": This standard covers inspection documents, often used in conjunction with specific steel tube product standards. It specifies the types of quality certificates (e.g., 2.2, 3.1, 3.2 certificates).
Japanese Standards (JIS)
Japanese Industrial Standards (JIS) have a certain influence in Asia.
JIS G3441 "Alloy Steel Pipe"
JIS G3444 "Carbon Steel Pipe for General Structural Use"
JIS G3454 "Carbon Steel Pipe for Pressure Piping"
JIS G3455 "Carbon Steel Pipe for High-Pressure Piping"
JIS G3456 "Carbon Steel Pipe for High-Temperature Piping"
JIS G3458 "Alloy Steel Pipe for Heat Exchangers"
JIS G3459 "Stainless Steel Pipe for Piping"
Read more: Standard for Seamless Steel Pipes for Fluids
Chinese National Standard (GB/T)
China is one of the world's largest steel pipe producers, and its national standard system is very complete, covering seamless steel pipes of various uses and materials.
GB/T 8162 Seamless Steel Tubes for Structural Use: Seamless steel tubes for general structures and mechanical structures, not for conveying fluids.
GB/T 3087 Seamless Steel Tubes for Low and Medium Pressure Boilers: High-quality carbon structural steel hot-rolled and cold-drawn seamless steel tubes used for manufacturing superheated steam tubes, boiling water tubes for low and medium pressure boilers of various structures, superheated steam tubes, large and small smoke tubes, and arch brick tubes for locomotive boilers.
GB/T 5310 Seamless Steel Tubes for High-Pressure Boilers: This standard specifies seamless steel tubes made of high-quality carbon steel, alloy steel, and stainless heat-resistant steel for the heating surfaces of water-tube boilers operating at high pressures and above. It places stringent requirements on the material's high-temperature resistance and endurance strength.
GB/T 9711 "Petroleum and Natural Gas Industry - Steel Pipes for Pipeline Transportation Systems": This standard is divided into multiple parts and is mainly used for pipeline transportation systems in the oil and natural gas industry. It corresponds to the international API 5L standard and has strict requirements on the strength, toughness, weldability, etc. of steel pipes.
GB/T 14975 "Stainless steel seamless tubes for structural use": Stainless steel seamless tubes for general structures and mechanical structures.
GB/T 14976 "Stainless steel seamless pipes for fluid transportation": high-quality stainless steel seamless pipes used for conveying fluids.
GB/T 3639 Cold-drawn or cold-rolled precision seamless steel tubes: used in applications requiring high dimensional accuracy and surface finish, such as hydraulic and pneumatic systems.
American Standards (ASTM / API / ASME)
American standards have a wide influence internationally, especially in the fields of oil and gas, electricity and chemicals.
ASTM A53 "Steel Pipe, Black and Hot-Dip Galvanized, Welded and Seamless": Seamless and welded steel pipe for general purposes.
ASTM A106 Seamless Carbon Steel Pipe for High-Temperature Service: Widely used in high-temperature fluid transportation, such as in the power, petrochemical and other industries.
ASTM A333/A333M "Seamless and Welded Steel Pipe for Low-Temperature Service": Applicable to low-temperature pressure vessels and pipelines.
ASTM A213/A213M "Seamless ferritic and austenitic alloy steel tubes for boilers, superheaters and heat exchangers": Applicable to high temperature and high pressure boilers and heat exchangers.
ASTM A335/A335M Seamless Ferritic Alloy Steel Pipe for High-Temperature Service: Used for high-temperature and high-pressure pipelines, such as in the power and petrochemical industries.
ASTM A312/A312M Seamless and Welded Austenitic Stainless Steel Pipe: Stainless steel pipe for general corrosion resistance and high temperature service.
API Spec 5L "Line Pipe Specification": An American Petroleum Institute (API) standard specifically for pipeline transportation systems in the oil and gas industry. It has strict requirements for steel pipe strength grades (such as X42, X52, X60, X70, etc.), toughness, weldability, dimensional accuracy, and surface quality.
API Spec 5CT "Casing and Tubing Specification": Oil casing and tubing used in oil and gas well drilling and production, including various strength grades (J55, K55, N80, L80, P110, etc.).
ASME (American Society of Mechanical Engineers) standards: Often used in conjunction with ASTM standards, Section II (Materials) and Section IX (Welding and Brazing Qualification) of the ASME Boiler and Pressure Vessel Code (BPVC) provide detailed regulations for the selection and welding of steel pipes.
European Standards (EN)
European standards (especially EN standards) are widely adopted in EU member states and many other countries.
EN 10216 Series "Seamless Steel Tubes for Pressure Purposes":
EN 10216-1 "Seamless Steel Tubes for Pressure Purposes - Part 1: Non-alloy Steel Tubes with Specifying Room-Temperature Properties"
EN 10216-2 "Seamless Steel Tubes for Pressure Purposes - Part 2: Non-alloy and Alloy Steel Tubes with Specifying Elevated Temperature Properties"
EN 10216-3 "Seamless Steel Tubes for Pressure Purposes - Part 3: Alloy Fine Grain Steel Tubes with Specifying Room-Temperature and Elevated Temperature Properties"
EN 10216-4 "Seamless Steel Tubes for Pressure Purposes - Part 4: Non-alloy and Alloy Steel Tubes with Specifying Low-Temperature Properties"
EN 10216-5 "Seamless Steel Tubes for Pressure Purposes - Part 5: Stainless Steel Tubes"
EN 10297-1 "Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes - Part 1: Non-alloy and Alloy Steel Tubes": Applicable to mechanical structures.
EN 10204 "Metallic Products Inspection Documents": This standard covers inspection documents, often used in conjunction with specific steel tube product standards. It specifies the types of quality certificates (e.g., 2.2, 3.1, 3.2 certificates).
Japanese Standards (JIS)
Japanese Industrial Standards (JIS) have a certain influence in Asia.
JIS G3441 "Alloy Steel Pipe"
JIS G3444 "Carbon Steel Pipe for General Structural Use"
JIS G3454 "Carbon Steel Pipe for Pressure Piping"
JIS G3455 "Carbon Steel Pipe for High-Pressure Piping"
JIS G3456 "Carbon Steel Pipe for High-Temperature Piping"
JIS G3458 "Alloy Steel Pipe for Heat Exchangers"
JIS G3459 "Stainless Steel Pipe for Piping"
Read more: Standard for Seamless Steel Pipes for Fluids
