High quality gi coil 1.Steel grade: DX51D SGCC 2. ... steel sheet, prepainted steel sheet.gi coil product show: gi coil Product nameHigh quality gi coilMaterialSGCC DX51D+ZNormal Thickness 0.18mm ... sheet, galvalume steel coil galvalume steel coil, galvanized steel strip, cold rolled steel coil, hot rolled steel coil, ... Park, Tianjin, ChinaWebsite: anxingda.en.alibaba.comgi coil High Quality gi coil