Steel Tube Manufacturing Standards

To ensure quality, durability, and performance, steel tubes are manufactured according to various international standards:

● EN (European Norms)

Covers mechanical, structural, and pressure-resistant steel tubes.

Examples: EN 10219 (cold-formed structural tubes), EN 10255 (water and gas pipes).

● ASTM (American Society for Testing and Materials)

Includes standards for construction, electrical, and industrial tubing.

Examples: ASTM A53 (steel pipes for water and gas), ASTM A513 (mechanical tubing).

● JIS (Japanese Industrial Standards)

Regulates precision steel tubes for industrial and automotive applications.

Examples: JIS G3445 (carbon steel tubes for machine structural purposes).

● DIN (Deutsches Institut für Normung - German Standards)

Sets requirements for high-performance and corrosion-resistant steel pipes.

Examples: DIN 2391 (precision steel tubes), DIN 2448 (seamless steel pipes).

● GB (Chinese National Standards)

Covers steel pipes for construction, fluid transportation, and special applications.

Examples: GB/T 3091 (welded steel pipes for low-pressure liquid delivery).