Galvanized coil is a type of steel coil that has been coated with a layer of zinc to protect it from corrosion. The process of galvanization involves immersing the steel coil in a bath of molten zinc, which forms a protective layer on the surface of the steel. This coating helps to prevent rust and corrosion, making galvanized steel coils suitable for use in a wide range of applications, including construction, automotive manufacturing, and industrial equipment. The zinc coating also provides a smooth, shiny finish to the steel, making it aesthetically pleasing as well as durable.