Alloy Steel Seamless Pipes/Tubes: 1.A333GR6,GR3,GR1,18Cr2Mo,15Mo3,TP446-2 ... 1629,2391,2440,2393 5. BS 970,3059 Carbon Steel Welded Pipes/Tubes: 1. API 5CT 2. API 5L 3. ... 39 7. JIS G3444,G3445,G3452,G3454,C8305,C3466 Stainless steel welded Pipes/Tubes: 1. ASTM A312, A358, A778 / ANSI B36. ... G3447 4. ASTM A249, A269 / JIS G3463 Stainless steel seemless Pipes/Tubes: 1. ASTM A312/A312M,ASME SA312/SA312M 2. ...