Coatings Technology: A PaintSquare Video Education Series

The PaintSquare Pro Video Series: A collection of technical presentations hosted by PaintSquare.com in cooperation with SSPC


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Selection of Coatings over Galvanizing

by Kevin Irving, Marketing Manager of Northern Operations, AZZ Galvanizing

Hot-dip galvanizing consists of a layer of zinc applied over a steel substrate to provide corrosion protection to the underlying steel and offers effective long-term corrosion protection for steel in chemically neutral atmospheric service. However, in service environments where rapid depletion of the zinc (galvanized) layer can occur, protective coatings are frequently applied over the galvanized surface to provide a more effective corrosion protection system. Protective coatings are also used to overcoat aging and deteriorating galvanizing to restore corrosion protection to steel no longer fully protected by the sacrificial zinc (galvanized) layer. Overcoating allows a variety of finish colors to be applied to galvanized surfaces for safety, identification and aesthetic purposes.

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1 comment

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George Wood, 4/21/2016, 11:53 AM

Can you use 40-60 grit sand instead of blasting


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