Bonderized steel is actually Galvanized G90 that has been put through a phosphate bath and has a layer of Chromate applied and dried leaving it ready to accept paint. The process produces a dull gray colored finish. Bonderized is commonly referred to as " Paint Grip ". It is meant to be painted and it holds paint quite well and is popular in the rainwater goods industry. Typical uses are, rain gutters, downspouts, roof flashings, and roof valleys. In recent years architects have used Bonderized for roofing and siding without applying a paint to the steel.
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Bonderized steel, also referred to as paint grip steel, is galvanized steel that has been put through a phosphate bath and a chromate dry. This process produces the dull grey color characteristic of paint grip galvanized steel which provides an excellent "primer" for painting applications. Bonderized material should be immediately painted after installation as the exposed phosphate coating is prone to white rust. In a continuous, controlled process, coils of galvanized steel are first thoroughly cleaned and rinsed.
A conditioning agent is then applied to promote the formation of a fine crystalline zinc phosphate coating. This process then converts the bare galvanized surface to an inert, crystalline zinc phosphate which is subsequently rinsed and sealed with a dried-in-place chromate conversion coating. This entire process creates what is called a Bonderized surface. A long time favorite of the rainwater goods industry , zinc phosphate provides the perfect surface for field painting of flashing, gutters, downspouts, and other roofing materials, as well as signs and even enamel coated interior fixtures.
We also offer galvannealed steel , an alternative to bonderized steel, which is a carbon steel coated with zinc on both sides by the continuous hot-dip process.
Give us a call at or contact us online and get a quote today! Go to Navigation Go to Content. What is Bonderized Steel? Bonderized Steel Process In a continuous, controlled process, coils of galvanized steel are first thoroughly cleaned and rinsed.
Benefits of Paint Grip Galvanized Steel Ready for immediate painting Dull gray appearance Improves life expectancy of the paint applied to it We also offer galvannealed steel , an alternative to bonderized steel, which is a carbon steel coated with zinc on both sides by the continuous hot-dip process.
Parkerizing is a method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of a chemical phosphate conversion coating. Parkerizing is usually considered to be an improved zinc or manganese phosphating process, and not to be an improved iron phosphating process, although some use the term parkerizing as a generic term for applying phosphating or phosphatizing coatings that does include the iron phosphating process. Bonderizing , phosphating , and phosphatizing are other terms associated with the Parkerizing process. Parkerizing is commonly used on firearms as a more effective alternative to bluing , which is an earlier-developed chemical conversion coating.
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