... 5CT 2.API 5L 3.ASTM A53 ,A106, A179,A192,A199,A210,A213,A333,A334,A556 4.DIN 17175 ... ,G3454,C8305,C3466 Stainless steel welded Pipes/Tubes: 1. ASTM A312, A358, A778 / ANSI B36.19 ,JIS G3459 ... 2. JIS G3448 JIS G3468 3. ASTM A270 / JIS G3447 4. ASTM A249, A269 / JIS G3463 Stainless steel ... SA312M 2. ASTM A269 ASME SA269 3. ASTM A213/A213M,ASME SA213/SA213M 4. ASTM A790/A790M 5. ASTM A511 6. EN ...