O.D. from 12-630mm, W.T. 1-60mm, Standards: GB, ASTM ,DIN ,JIS, BS, etc. Grade: Q235A/B, Q275A/B GB, ASTM ,DIN ,JIS, BS, etc. Grades: Q235A/B, Q275A/B,Other steel grade is also availalbe as per clients' requirements Specification: O.D.12-630mm, W.T. 1- 60mm. Marking: as per customer's requirementDimensions, Mechanical properties, Chemical compositions: As per clients requirements Packing: ...