What are the international standards for seamless steel pipes?

Seamless steel pipes are a type of steel pipe without welds. They are widely used in many fields due to their excellent mechanical properties and pressure resistance. The following is a detailed introduction to the seamless steel pipe standards of major countries and regions:

1. Chinese Standards (GB Standards)
China’s seamless steel pipe standards begin with “GB” and mainly include the following:
GB/T 8162: “Seamless Steel Pipes for Structures”
Applicable to seamless steel pipes for general structures and mechanical structures.
GB/T 8163: “Seamless Steel Pipes for Fluid Transportation”
Applicable to ordinary seamless steel pipes for conveying fluids such as water, oil, and gas.
GB/T 5310: “Seamless Steel Pipes for High-Pressure Boilers”
Specially used for superheaters, reheaters, headers and other components in high-temperature and high-pressure boilers.
GB/T 6479: “Seamless Steel Pipes for High-Pressure Fertilizer Equipment”
Pipes used for high-temperature and high-pressure conditions in chemical equipment.
GB/T 9711: “Steel Pipe for Oil and Gas Industry”
Used for transporting oil and natural gas, divided into two grades: PSL1 and PSL2.

2. American Standards (ASTM, API, ASME)
American standards are widely used in the international market, mainly including the following:
ASTM A106: “Carbon Steel Seamless Pipe for High Temperature Service”
Applicable to transportation and pressure purposes under high temperature conditions.
ASTM A53: “Carbon Steel Seamless and Welded Steel Pipe for General Purpose”
Used for transporting fluids and structural applications.
ASTM A333: “Seamless and Welded Steel Pipe for Low Temperature Service”
Specially used for steel pipes in low temperature environments.
API 5L: “Standard for Steel Pipe for Pipeline”
Used for oil and natural gas pipelines, divided into two specifications: PSL1 and PSL2.
ASME SA106, SA53
Is a supplementary version of the ASTM standard for boilers and pressure vessels.

3. European Standards (EN Standards)
European standards unify the technical requirements of many countries, mainly including:
EN 10216-1: “Non-alloy steel seamless pipes”
Non-alloy steel seamless pipes for pressure purposes.
EN 10216-2: “Alloy steel and non-alloy steel seamless pipes”
Mainly used under high temperature conditions.
EN 10297-1: “Seamless steel pipes for mechanical structures”
Applicable to mechanical parts and engineering structures.

4. German Standards (DIN Standards)
German standards are detailed and focused, mainly including:
DIN 17175: “Seamless steel pipes for high-pressure boilers”
Used for high temperature and high pressure conditions of boilers and superheaters.
DIN 2448: “General purpose seamless steel pipes”
Widely used in the field of transportation and structural steel pipes.
DIN 1629: Seamless steel pipes for non-alloy steel and fine-grained steel

5. Japanese Standard (JIS Standard)
Japanese standards are prefixed with JIS. Common seamless steel pipe standards are:
JIS G3444: “Seamless steel pipes for general structures”
Applicable to buildings and mechanical structures.
JIS G3454: “Carbon steel pipes for pressure pipes”
Mainly used for medium and low pressure pipes.
JIS G3455: “Carbon steel pipes for high pressure pipes”
Used in high pressure environments.
JIS G3461, G3462: “Seamless steel pipes for boilers”
Used for low pressure and high pressure boilers respectively.

6. Korean Standard (KS Standard)
The Korean seamless steel pipe standard is roughly similar to the Japanese JIS standard, but there are also localized modifications:
KS D3562: “Carbon Steel Pipe for Fluid Transportation”
KS D3507: “Steel Pipe for High-Pressure Boiler”

7. Russian Standard (GOST Standard)
Russian GOST standards are mostly used in severe cold and high-pressure environments:
GOST 8731-74: “Seamless Steel Pipe Specifications”
Defines the manufacturing and dimensional requirements of seamless steel pipes.
GOST 8732-78: “Technical Conditions for Seamless Steel Pipes”
Specifies the performance and testing requirements of seamless steel pipes.
GOST 633-80: “Seamless Steel Pipes for Oil and Gas Industry”
Focuses on applications in the energy field.

9. British Standard (BS Standard)
BS 3601: Seamless steel pipes for pressure purposes
BS EN 10216: Unified adoption of the European standard system

Other commonly used international standards
ISO 3183: International pipeline steel pipe standard, suitable for the oil and gas industry.
BS 3601 (British Standard): Seamless steel tubes for pressure purposes.

Each standard has specific technical requirements and the selection should be based on the specific application, working conditions and environmental requirements.