Galvanizing is the process of adding a layer of zinc to the outer surface of a metal. The purpose of this is to add a protective coating to the underlying metal, reducing the likelihood of corrosion or rust. The galvanizing process varies depending on the specific technique. However, the most important part of the process is that it generally involves surrounding the steel or iron in zinc, which may be in a liquid or dust-like state. When the zinc is introduced, the iron in the surrounding metal reacts with the zinc to form a tightly bonded alloy coating.