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Powder Coating is the only technical publication devoted to the Powder Coating industry and other green finishing technologies.
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Publication Date: 02/2004
Pages: 4
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Powder coating over hot-dipped galvanized steel

Pairing powder coating with other forms of finishing can allow coaters who combine the processes more variety and versatility for their businesses than if they were to stick with one system. Take galvanizing, for example. When combined with powder coating, it can add to steel's durability over a long period of time. This article explains duplex systems, or those that combine hot-dip galvanizing with powder coating. It outlines the process and explains how to prepare a galvanized surface for powder coating.

In the past, protecting steel from corrosion typically involved either the use of hot-dip galvanizing or some type of powder or wet coating system. However, with greater emphasis on long-term performance [50 to 100 years], more designers and owners are using a combination of both methods of protection in what is commonly referred to as a duplex system. A duplex system is simply powder coating steel that has been hot-dip galvanized.

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