... EN,JIS,GB and ASTM.Steel Grade Of Galvanized Steel Coils:Standard of galvanized steel coils as per EN ... 10327, then the steel grade of galvanized steel coils can be DX51D, DX52D,DX53D ... coils as per ASTM A653, then the steel grade of galvanized steel coils can be CS, FS, DDS ... , EDDS, SS etc..Different steel grade of galvanized steel coils means different drawing quality.Zinc Spangle ...