Galvanized steel is a carbon flat rolled steel product that is covered in a zinc coating on its surface. This coating increases a steel coil's, slit coil's, or sheet's resistance to corrosion. The most common method of galvanizing steel is the hot dip galvanized process.

Galvanized coil coating

(1) normal zinc flower coating: Zinc layer in the normal solidification process, zinc grains grow freely formed with obvious zinc flower morphology of the coating.

(2) small zinc flower coating: During the solidification process of zinc layer, zinc grains are artificially restricted to form as fine zinc flower coating as possible.

(3) Zinc free flower coating: By adjusting the chemical composition of the bath, the coating has no visible zinc flower morphology and uniform surface.

(4) Zinc iron alloy coating: Heat treatment of the steel strip through the zinc bath, so that the whole coating zinc and iron alloy layer, the appearance of the coating is dark gray, no metallic luster, in the process of violent molding is easy to powder, suitable for in addition to general cleaning, without further treatment can be directly painted coating.

(5) difference thickness coating: For both sides of galvanized steel sheet, different zinc layer weight coating is required.

(6) the whole light: Finishing is a cold rolling process of galvanized steel with a small amount of deformation for one or more of the following purposes.

Improve the surface appearance of galvanized steel plate or suitable for decorative coating; So that the finished products do not see the processing of slip line (Luders line) or folding phenomenon temporarily reduced to the minimum.