PROCESS FOR CORROSION PROTECTION OF ZINC COATED STEEL ROLLED SHEETS WITH MULTILAYER ELECTROLYTIC COATING

摘要

A process is disclosed for the protection of steel rolled sections, in form of rolls, sheets or plates, already plated with zinc or zinc containing alloys, by means of one or more layers of an electrolytic plating, consisting of inorganic elements or compounds, preferably metal chrome and chrome oxide.