Stainless steel of tube number comparision between china and international

Stainless steel pipe is one of the more standardized materials in the building and engineering industries.

Standard Classifications:

Some grades are not covered by standard numbers and could be proprietary grades or be named using standards for specialist products like welding wire.

• ASTM Standards: ASTM A312, ASTM A213, ASTM A269, ASTM A376
• European Standards: DIN 17456, DIN 17458, EN 10216, EN 10297
• Japanese Standards: JIS G 3459, JIS GS3463, GS3467, JIS G3448
• Russian Standards: GOST 9940, GOST 9941

The old AISI three digit stainless steel numbering system (e.g. 304 and 316) is still commonly used. New grades are defined under the SAE and ASTM system that uses a 1-letter + 5-digit UNS number. An example of this is the new term for 304, which is S30400. Other designations include old BS numbers like 304S31 and occasionally old wartime Emergency Numbers such as ‘EN’ 58E.

Grade Selection:

The grade selection process for stainless steels is a compromise between the desired properties of the finished product.

• ASTM Standards: 304/L/H, 316/L/H, 321/H, 317/L, 347/H, 310S, 2205, 2507, 904L, etc.
• European Standards: 1.4301, 1.4307, 1.4307, 1.4401, 1.4404, 1.4541, 1.4550, 1.4438, 1.4845, etc.
• Japanese Standards: SUS304, SUS304H, SUS304L, SUS309S, SUS310S, SUS316, SUS316L, SUS317, SUS317L, SUS321, SUS347
• Russian Standards: 08X18B10, 03X18H11, 08X17H12M2T, 03X17H12M2, 08X17H15M3T, 03X16H15M3, 08X18H10T, 12X18H20T, 08X18H12B, 10X17H13M2T