... diameter38-325mmWall thickness4mm-50mmStandardASTM ,API ,DIN JIS GB ASMEMaterialA25, Grade A, B, X42, X46, X52, X60, X65, X70 S235 JR S185 ... Order Quantity20 tonsDelivery TimeAccording to customer's requirement(less than a month)QualityFirst gradeProductivity15000T/MOthers1. Special design available according to requirement2. anti ...