Alloy Steel Seamless Pipes/Tubes: 1.A333GR6, ... ,T5,T22,T11,WB36. 2. EN10216-2 Carbon Steel Seamless Pipes/Tubes: 1.API 5CT 2.API ... ,1629,2391,2440,2393 5. BS 970,3059 Carbon Steel Welded Pipes/Tubes: 1. API 5CT 2. ... 7. JIS G3444,G3445,G3452,G3454,C8305,C3466 Stainless steel welded Pipes/Tubes: 1. ASTM A312, A358, ... 4. ASTM A249, A269 / JIS G3463 Stainless steel seemless Pipes/Tubes: 1. ASTM A312/A312M,ASME ...