... ,phosphorus,chromium hydrochloric acid passivation) on the surface of steel sheet ( zinc-plated,aluminium-zinc plated,nickel plated,etc.) . ... ASTM A653 , Z60-180/GB/T12754-91 etcBase PlateGalvanized sheet , Galvalume SheetThickness0.18-1.5mmWidth914mm,1000mm,1200mm,1250mm,1500mm etcTop5 ... are sea blue, white grey and bright red. 7).Prepainted coil is painted twice on the upper surface of hot galvanized ...