Powder Coating Galvanized Steel Sheet

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Powder coating galvanized steel sheet.

Hot dip galvanizing is coating of metallic zinc bonded with steel to form a source of corrosion protection for steel. Even though this standard is specific to powder coating of galvanized steel it contains the same cleaning and preparation techniques for the surfaces coated with liquid products as astm d6386 and sspc sp 16. Powder coating galvanized steel for architectural applications is covered at present by en 13438. The galvanized coating protects the base steel supplying cathodic and barrier protection.

The finished metal powder coating protects both the steel part and the galvanized layer and provides an attractive exterior finish to the part. One of the most durable protective coatings for steel is provided by applying a polyester powder coating over hot dip galvanized steel to provide a high grade architectural finish to steel items. En 15773 industrial application of powder organic coatings to hot dip galvanized or sheradised steel articles duplex systems specifications recommendations and guidelines provides additional information concerning communication within. When paint and galvanized steel are used together the corrosion control provided is superior to either system used alone.

However astm d7803 includes a pre heating step to drive off air and moisture from the prepared galvanized surface prior to powder coating. One of the most durable protective coatings for steel is provided by applying a polyester powder coating over hot dip galvanized steel to provide a high grade architectural finish to steel items. A duplex system is simply painting or powder coating steel that has been hot dip galvanized after fabrication. Galvanized steel with a powder coated surface.

This process can be difficult to perform properly if quality control procedures are not in place and can result in uneven coating and pinhole spots where the coating does not adhere.