A history of the uses of metallic zinc and zinc coatings to control corrosion is outlined briefly with some consideration being given to the theory under which zinc is protective to steel. The following methods of application of zinc are discussed in detail: hot dip, metallizing, sherardizing and painting. The relative merits and weaknesses of zinc coats are considered with case histories being cited to show the fields of usefulness of such coatings. 5.3.2

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