Building material U beam steel channel steel 1) Size:as below 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, ... and traffice systom , vehchile ,machineExcept U channel, we also deal with Angle steel bar, H and I beam.If you would like to know ...