Definition of galvanized coil Coating

Definition of galvanized coil coating

1. normal zinc coating: zinc coil coating in the normal solidification process, zinc grains freely grow into a coating with obvious zinc flower morphology.

2. small zinc coating: zinc layer in the solidification process, zinc grains are artificially limited to form as small as possible zinc coating.

3. no zinc coating: obtained by adjusting the chemical composition of the plating solution, does not have visual zinc flower morphology, uniform surface coating.

4. zinc iron alloy coating: heat treatment of the steel strip after the galvanized bath, so that the entire coating to generate zinc and iron alloy layer, the coating appearance is dark gray, no metallic luster, in the intense molding process is easy to powder, suitable for in addition to the general cleaning, without further treatment can be directly painted coating.

5. difference thickness coating: on both sides of galvanized steel plate, the coating with different zinc layer weight is required.

6. finish: Finish is a small deformation of cold rolling of galvanized steel plate for one or several purposes. Improve the surface appearance of galvanized steel plate or suitable for decorative coating; To temporarily minimize the phenomenon of slip line or fold when the finished product is not processed.