... *30-800*800mm T: 3-40mm Material:Q195,Q235B,Q345B,20#,ST37/44/52,STRK400/490,S355JOH Standard: GB/T3094-2000 EN10210 ... G 3466, DIN EN 10210, DIN EN10219, ASTM A500, GB/T 3094-2000, GB/T 6728-20024) Use: construction structure, machinery making, container, hall ...