... Galvanized steel coil Galvanized Steel Coil with Regular Spangle finish and follow details: 1) Quality standard ... ) Surface finish of galvanized steel coil: Normal spangle, large spangle, small spangle, matt surface 4) Thickness of galvanized steel ... requirements.6. Surface structure:regular spangle,skin-passed spangle,minimized spangle,zero spangle.7.Surfacetratement:chromate-passivated,oiled/unoiled ...