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Seamless steel pipe manufacturing standards-CONTINENTAL STEEL CO.,LTD
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Seamless steel pipe manufacturing standards

Oct 09, 2025

The manufacturing standards of seamless steel pipes are crucial for ensuring product quality, performance, and safety. Because seamless pipes serve a wide range of applications — from low-pressure fluid transport to high-temperature and high-pressure systems — different countries and organizations have established their own standard systems.


Below is a detailed summary of the main national and international seamless steel pipe standards, including those from China, the United States, Europe, and Japan.

 

Chinese National Standards (GB/T)

China is one of the largest producers of seamless steel pipes, with a complete and mature national standard system that covers diverse materials and uses.

 

GB/T 8162 — Seamless Steel Tubes for Structural Use
For general and mechanical structures, not intended for fluid transport.

 

GB/T 3087 — Seamless Steel Tubes for Low and Medium Pressure Boilers
Used for making superheated steam tubes, boiling water tubes, and locomotive boiler components.

 

GB/T 5310 — Seamless Steel Tubes for High-Pressure Boilers
Specifies high-quality carbon, alloy, and stainless heat-resistant steels for boiler heating surfaces operating under high pressure and temperature.

 

GB/T 9711 — Steel Pipes for Petroleum and Natural Gas Pipeline Transportation
Aligns with API 5L, focusing on pipeline strength, toughness, and weldability.

 

GB/T 14975 — Stainless Steel Seamless Tubes for Structural Use
For general structural and mechanical applications.

 

GB/T 14976 — Stainless Steel Seamless Pipes for Fluid Transportation
Used for conveying corrosive or clean fluids.

 

GB/T 3639 — Cold-Drawn or Cold-Rolled Precision Seamless Steel Tubes
For high-precision applications like hydraulic or pneumatic systems.

 

American Standards (ASTM / API / ASME)

The United States sets globally influential standards, especially in oil, gas, power, and chemical industries.

 

ASTM A53 — Black and Hot-Dip Galvanized Welded and Seamless Steel Pipe
General-purpose pipe for air, water, steam, and structural use.

 

ASTM A106 — Seamless Carbon Steel Pipe for High-Temperature Service
Common in power plants and petrochemical systems.

 

ASTM A333/A333M — Seamless and Welded Steel Pipe for Low-Temperature Service
For low-temperature pressure vessels and pipelines.

 

ASTM A213/A213M — Seamless Ferritic and Austenitic Alloy Steel Tubes
Used in boilers, superheaters, and heat exchangers.

 

ASTM A335/A335M — Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
For high-temperature, high-pressure piping systems.

 

ASTM A312/A312M — Seamless and Welded Austenitic Stainless Steel Pipe
For corrosion- and heat-resistant applications.

 

API Spec 5L — Line Pipe Specification
For oil and gas pipelines with strength grades like X42, X52, X60, and X70.

 

API Spec 5CT — Casing and Tubing Specification
For oil and gas well drilling and production; includes grades such as J55, N80, and P110.

 

ASME Boiler and Pressure Vessel Code (BPVC) — Sections II and IX
Regulates material selection, welding, and brazing qualifications for boiler and pressure applications.

 

European Standards (EN)

European standards (EN) are widely recognized and adopted throughout the EU and many other regions.

 

EN 10216 Series — Seamless Steel Tubes for Pressure Purposes

 

EN 10216-1: Non-alloy steel tubes for room-temperature applications.

 

EN 10216-2: Non-alloy and alloy steel tubes for high-temperature applications.

 

EN 10216-3: Fine-grain alloy steel tubes for both room and elevated temperatures.

 

EN 10216-4: Tubes with low-temperature properties.

 

EN 10216-5: Stainless steel tubes for pressure use.

 

EN 10297-1 — Seamless Circular Steel Tubes for Mechanical and General Engineering Purposes
Covers non-alloy and alloy steels for mechanical structures.

 

EN 10204 — Metallic Products – Inspection Documents
Specifies inspection certificates such as 2.2, 3.1, and 3.2, used for quality assurance and traceability.

 

Japanese Industrial Standards (JIS)

Japan’s JIS system is widely used across Asia for precision manufacturing and high-quality production.

 

JIS G3441 — Alloy Steel Pipes

 

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

 

Conclusion

Each country’s seamless steel pipe standards reflect different industrial focuses and application needs:

China’s GB/T emphasizes wide coverage and material diversity.

U.S. ASTM/API/ASME prioritize energy and petrochemical applications.

European EN standards focus on engineering precision and certification systems.

Japan’s JIS standards are known for tight tolerances and high production quality.

 

Understanding these standards helps manufacturers, engineers, and buyers choose the right seamless steel pipe for specific applications — ensuring safety, durability, and compliance in every project.

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