The hot-dip galvanizing process consists of three steps: surface preparation, galvanizing, and inspection.

Surface Preparation: For high quality hot-dip galvanizing, steel must be properly prepared prior to being immersed in a bath of molten zinc. During the surface preparation stage, material going through degreasing/caustic cleaning, pickling, and fluxing. Galvanizing: Following surface preparation, the steel will be immersed in a bath of molten zinc. The zinc kettle contains at least 98% pure zinc and is maintained at a temperature between 815º-850º F (435º-455º C). While steel is immersed in the kettle, the zinc reacts with the iron in the steel to form a series of metallurgically bonded zinc-iron alloy layers with the final top layer 100% zinc. Inspection: The inspection process of galvanized steel is fairly simple. Zinc will not react with unclean steel, therefore a visual inspection of the product will provide a good assessments of the quality of the coating. Tests for coating thickness and adherence to ASTM standards will also be performed.

Halol Factory Kettle Size: 12.5m(L) x 1.5m(W) x 2.5m(H) Indapur Factory Kettle Size: 16.3m(L) x 2.5m(W) x 3.3m(H) Visit Valmont Coatings for more info.