... .0mm,W:40-1250mm Zinc:60-275g/m2 (630/610mm) CR and Gi steel Our factory located in Hebei Province,the ... -610-630-1250mm Tolerance : width tolerance : +/-5mm, thickness tolerance :+0.03/-0.03mm (or according to customers' request).Coil weight: 1 ... / V channel , celling bar, T bar,Tank, etc. (630/610mm) CR and Gi steel