... -1500mm 3)GB or ASTM 4)SGCC,DC51D,DX51D,DX52D,SPCC,SGCD,Q19 Thickness 5mm galvanized steel sheet1)0.18mm-1. ... 5mm 2)600mm-1500mm 3)ASTM,AISI,GB 4)SGCC,DC51D ... organization of the group company.NAMEGalvanized Steel SheetCERTIFICATEISO9001;2008base materialhot-dip galvanized steel sheetJIS G3302,JIS3312,ASTM , GBSGCC,DX51D,SGCH,A653,SGCLZinc ...