ERW Steel Pipe 1.OD:30-1016mm WT:SCH10-SCH160 2.Standard:ASTM,BS1387,DIN,API 5L 3ISO certificate 4.Technic:ERW ERW Steel ... PipeNameSpiral welded pipediameter20-1016mmWall thickness2-45mmLength2-12meterTolerance WT:±2%StandardASTM,JIS,DIN,API,GB and so onMaterial10 ... # API 5L,API 5CT,ST33,ST37,A53,A106,A210 and so onPackagingPainting, caps, beveled edges, bundles or as ...