2. Degreasing (alkali washing) is equipped with heating equipment to eliminate grease and paint on the surface of iron work pieces.

3, wash to remove the alkali water and attachments on the surface of the iron workpiece.

4, pickling to remove rust, oxide and other surface coverings

5, after pickling check treatment: pickling effect is ideal, such as insufficient pickling, pickling again, if the pickling before the treatment is not thorough, need to be treated again after pickling.

6, wash to remove the acid water and other attachments on the surface of the iron workpiece

7. The upper plating agent cleans the surface of the workpiece again to ensure that the surface is not rusted before galvanizing.

8, drying to improve the temperature of the iron workpiece, to avoid excessive water on the surface of the iron, in the galvanizing explosion.

9, hot dip zinc workpiece immersed in 440℃-470℃ molten zinc liquid, after reaching a certain time, the surface of the iron workpiece is obtained a layer of zinc iron alloy layer and pure zinc layer coating.

10, passivation provides atmospheric corrosion resistance of the workpiece surface, reducing or extending the time of white rust.

11, cooling to prevent the workpiece cold retraction, resulting in collective organization cracking.

12, fine removal of zinc nodules and zinc ash attached to the coating surface

13, inspection coating inspection and determination, workpiece appearance inspection.