ASTM A53 Hot Rolled ERW Steel Pipe(API steel pipe, ERW steel pipe, Hot rolled steel pipe)Outside Diameter:89mm (3 inch) ---630mm (24inch) Wall Thickness:4mm---12.7mmProduction Line:4 production lineAnnual Capacity:200, 000TonsMaterial:GrB, X42, ASTM A53, ASTM A106, 10#---45#, according to customers...