... P91,T5,T22,T11,WB36. 2. EN10216-2 Carbon Steel Seamless Pipes/Tubes: 1.API 5CT 2.API 5L ... ,1629,2391,2440,2393 5. BS 970,3059 Carbon Steel Welded Pipes/Tubes: 1. API 5CT 2. API ... 39 7. JIS G3444,G3445,G3452,G3454,C8305,C3466 Stainless steel welded Pipes/Tubes: 1. ASTM A312, A358, A778 / ... JIS G3447 4. ASTM A249, A269 / JIS G3463 Stainless steel seemless Pipes/Tubes: 1. ASTM A312/A312M,ASME SA312/SA312M ...