... Europe Eastern Asia More detailed information: mild steel trading companies Outer Diameter10.3-609.6mmWall Thickiness1.73 ... ,as customer’s requiremntsInternatioanal StandardISO 9000-2001StandardsASTMA53,BS1387-1985,GB/T3091-2001,EN39,BS1139MaterialsQ195, Q215, Q235, Q345, ... Company informationWe, Tianjin Zhongtian Haoyun International Trade Co., Ltd. was founded in 1990, is a professional enterprise, ...