High quality, reasonable design and long-term durability. Adequate resources ;Product credibility; Quality certificate of SGS. StandardASTM A653, JIS G3302,GB/T3830-2006GradeDX51D,SGCC,SPCC,SGHCThickness0.17-0.8mmWidth900-1250mm(usual size:914mm,1000mm,1200mm,1219mm,1250mm,)Base metalGalvanized steel coils, aluzinc steel coilsZinc coating80-275gsmCoil ID508mm&610mmCoating thicknessTop:18-25um ...