... .17-3.0mm,W:40-1250mm Zinc:60-275g/m2 (630/610mm) CR and Gi steel Our factory located in Hebei ... : Q195,SPCC,DX51DThickness: 0.17-3.0mm, W:40-610-630-1250mm Tolerance : width tolerance : +/-5mm, thickness tolerance :+0.03/-0 ... ,U/ C / V channel , celling bar, T bar,Tank, etc. (630/610mm) CR and Gi steel