Standard: ASTM F67, ASTM F136.
Welded Tube and Pipe Acceptable Standard
__JIS H 4631 Standard
Class 1, Class 2, Class 3, Class 11, Class 12, Class 13, Class 21, Class 22, Class 23
__JIS H 4635 Standard
Class 1, Class 2, Class 3, Class 4, Class 11, Class 12, Class 13, Class 21, Class 22, Class 23
__ASTM B338, B862 Standard
Gr. 1, Gr. 2, Gr. 3, Gr. 7, Gr. 9, Gr. 11, Gr. 12, Gr. 14, Gr. 15
__ASTM SB338, SB862 Standard
Gr. 1, Gr. 2, Gr. 3, Gr. 7, Gr. 9, Gr. 11, Gr. 12, Gr. 14, Gr. 15