... , pipelines, vessels, pipe fittings and mechanical StructuresGrade: 10,20,35,45,Q345,15CrMo,12Cr1MoV,A53A,A53B,SA53A,SA53B Other ... negotiating with customersDimensions, Mechanical properties, Chemical composition: Refers to GB5310-1999 or please contact us Packing:Bundles, seaworthy ... industry occupies an irreplaceable position.Please don't hesitate to contact us, your inquiry will be highly appreciated ...