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Galvanized steel is a type of steel that has been treated with an application of protective zinc coating to prevent corrosion. The most common means of galvanizing is through a process known as hot-dip in which the material is first cleaned to remove rust, oil, and mill scale. Then, it is immersed in a bath of molten zinc. Galvanized steel can be identified by the crystallization pattern on the surface, also known as “spangle”.