Rust may still happen even after zinc plating treatment for the steel piping products.That is the reason why the post zinc plating treatment not good.(Zinc Plating Benefits for Steel Piping Products)

The application of a post-plate chromate treatment is a good way to enhance the corrosion protection properties of zinc plating. A chromate is a salt that contains a combination of chromium and oxygen. Immersing zinc-plated parts in dichromate or chromic acid solution as part of the post-plating process can make them less susceptible to oxidation. It will also help provide the additional benefit of creating another corrosion-resistant barrier against moisture.

Cold galvanized pipe fittings products finished in Haihao Group

Another process is also important. It is the application of post-treatment sealers, which takes place after chromate treatment. Sealers can be used on yellow, black, black oxide (olive drab) or clear (blue) zinc coatings. A sealer works by causing the chromate film to harden, while also promoting adhesion to the zinc coating. When used in tandem with a chromate treatment, sealers can also increase corrosion protection by as much as 100 percent.

Your Zinc Plating steel piping products should be stronger to resist the corrosion after the treatment.As a professional supplier of steel piping products,Haihao could provide the best products with different demand of surface treatment,such as the zinc plating.Don’t hesitate to contact us if you have any similar demand.Email:sales@haihaogroup.com