Powder Coating Galvanized Steel Sheet

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.

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 so there are still some problems during this application. 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. There are certain powder coating companies that have better knowledge of this process and will do a more reliable job of it and some that are not as good.

Powder coating galvanized steel for architectural applications is covered at present by en 13438. When paint and galvanized steel are used together the corrosion control provided is superior to either system used alone. The galvanized coating protects the base steel supplying cathodic and barrier protection. Galvanized steel versus powder coatings for outdoor environments thursday april 13 2017 chipping fading and corrosion are common concerns when deliberating over the use of galvanized steel coating or powder coating for outdoor furnishings such as handrails and guardrails bike racks playground equipment and park benches.

Recently we have a requirement of powder coating ral 9006 jotun make on hot dip galvanized tanks of size app 1 5 mtrs x 1 mtr x 1 mtr. Galvanized steel with a powder coated surface. The finished metal powder coating protects both the steel part and the galvanized layer and provides an attractive exterior finish to the part. Make sure the coater has had previous experience with powder over galvanized 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. Check for experience with galvanized as a substrate and see what the powder coater can offer for a warranty. 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. Bubble problems powder coating galvanized steel 2004.

Polyester powder coating over hot dip galvanized steel provides a high grade architectural finish to steel items with excellent atmospheric weathering characteristics the powder coated product ensures maximum durability for steel components which will generally provide 50 year rust free life spans in most architectural applications. We are facing problems in powder coating.