Improvements in or relating to the vitreous enamelling of steel and like ferrous sheet, plate or articles

摘要

763,379. Enamelling. BRITISH COATED SHEETS, Ltd. May 28, 1954 [June 11, 1953], No. 16076/53. Class 56 [Also in Group XXXVI] Immediately prior to vitreous enamelling, an anti-corrosion coating of zinc, tin or cadmium on a ferrous metal sheet or article plated with 0.6-1.2 microinches of nickel, cobalt, or molybdenum is removed by pickling or like cleaning treatment.