How Hot Dip Galvanizing is done

The Hot-Dip Galvanizing process involves dipping chemically cleaned steel parts into a tank of molten zinc which reacts with the steel and forms a protective coating.

During the dipping process the steel reacts with molten zinc to form a series of zinc-iron alloy layers which, together with an outer layer of pure zinc, are metallurgic ally bonded to the steel surface. This coating has a very low corrosion rate and because the alloy layers are harder than the underlying steel it becomes highly resistant to mechanical damage. The molten zinc in the galvanizing tank covers corners, seals edges, seams, welds and rivets, and penetrates recesses to give complete protection to areas which are potential corrosion spots with other coating systems.Each galvanized part requires complete immersion in molten zinc to ensure a uniform coating on all surfaces, even on areas not normally accessible to paint applicators.