Specification:
- ANSI/ASME B16.9, ANSI/ASME B16.47 Series A (MSS SP-44)
- ANSI/ASME B16.47 Series B (API 605)
- ASME B 16.36
- EN1092-1:2001
- BS10:1962, BS4504 Section 3.1/1989
- DIN Standard
- UNI Standard
- JIS B 2220
- GOST12820-80/GOST12821-80/GOST12822-80/GOST ATK 24.200.02-90
Material: ASTM A105, RST37.2, C22.8, C20, 16Mn, ASTM A182, F304, F304L, F316, F316L, F321, etc.
