... steel sheetCorrugated sheets are made from Galvanized steel coils, Galvalume Steel coils, Galvalume Pre-painted sheet and aluminum sheet, ... prepainted hot dip galvanized steel coils, roll formed by roll forming machines, the thickness and ... in factory, warehouse, exhibitions and civil construction.9.Color: Zinc, Alu-zinc, Auminium or any RAL colors10.Standard: JIS, ASTM, DIN ...