Detailed Product Description Size: 80*80~500*500Steel grade: Q345B Q235 S355J2H S235JRHStandards: GB/T 3094-2000 EN10219 ASTM A500Length:6~18MUse: machinery making Quality: primeUse: construction structure, machinery, container , hall structure, solar stent, offshore oil field, sea trestle , motorcar cassis, airport structure, shipbuilding, automotive parts and so on