Round Steel Bar: (1)Steel Grade: carbon (2)Standard: ASTM, BS, DIN, GB (3)Dimensions: 6---25mm (4)Technique: Hot Rolled Steel Grade: carbonStandard: ASTM, ... including square pipes,rectangular steel pipes,round pipes and galvanized steel pipes. We also sell stainless steel band,galvanized steel strips,spiral pipes,seamless ... pipe production base.Any questions, please contact with me. Round Steel Bar