Supplier: Carbon steel pipes and tubes:ASTM A 106 / ASTM A 53/ API 5l/ DIN 1629 / EN10305-1 / EN10210-1, alloy steel pipes and tubes: ASME SA-213 T1, T5, T11, T22, T9, T91, ASME SA-335 P1, P5, P12, P22, P9, P91, P92, stainless steep pipes and tubes: TP304/l, TP316/l, TP316LN, TP31, TP321, TP347/H, , TP310S, UNS S31803(S32205)