Duplex systems, also known as painting over hot dip galvanized steel, are extremely effective corrosion protection systems. However, careful surface preparation techniques need to be used to alleviate potential coating failures. The age and characteristics of the galvanized coating should be used to determine what type of surface preparation is needed. Surface preparation should develop an anchor profile for the paint without removing the zinc coating.

Subject
Brushing, Paint removal, Zinc rich coatings, Steel surfaces, Metal surfaces, Galvanized coatings, Oxide surfaces, Zinc oxide, Galvanized steel, Steel, Corrosion protection, Zinc, Paints
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2015
Association for Materials Protection and Performance (AMPP)
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