1.heavy thickness steel pipe 2.O.D10~720mm 3.WT1.5~120mm ... : ISO, API Detailed Product Description Seamless Steel Pipe ,welded pipe, carbon steel pipe 1Productheavy thickness steel pipe2StandardU.S.A.ASTM A53/A106/A178/ ... ST52,15Mo3,13CrMo44, 1.0309, 1.0305, 1.0405BritainLow, Medium, high Russia10, 20, 35, 45, 20XChina10#, 20#, 16Mn, 20G, ... provide you more than products. Wall thickness steel pipe/tube