... 2) Thickness: 0.9mm to 3.0mm 3) Plain & Slot MS Channel steel bar1.Origin: Tangshan city 2.Standard: GB , JIS ... ,BS , ASTM 3.Steel grade: Q195,Q235,Q345, SS400, ST52, A36U ... Material :Q195-Q235. ASTM A36, SS400.ect4. Standard: GB , JIS ,BS , ASTM, DIN.5. Size: meet Standard size or as buyer ...