... ,T11,WB36. 2. EN10216-2 Carbon Steel Seamless Pipes/Tubes: 1.API 5CT 2.API 5L 3.ASTM ... 1629,2391,2440,2393 5. BS 970,3059 Carbon Steel Welded Pipes/Tubes: 1. API 5CT 2. API 5L 3. ... 7. JIS G3444,G3445,G3452,G3454,C8305,C3466 Stainless steel welded Pipes/Tubes: 1. ASTM A312, A358, A778 / ANSI B36 ... 4. ASTM A249, A269 / JIS G3463 Stainless steel seemless Pipes/Tubes: 1. ASTM A312/A312M,ASME SA312/SA312M 2. ...