*OD:10-630mm,WT: 4-80mm *Standard:ASTM,API,JIS,DIN,BS,EN,GB *Material:as customer require *Surface:galvanized,painted ... or oil 1.Technique: cold drawn or hot rolled2.Length range: 4m-12m ... .End treatment: beveled, plastic cap available4.Packing: In bundles with steel strip or as customer's requirements5.Application:petroleum,gas,construction ...