What Are the Surface Treatment Methods for Perforated Metal Sheets with Round Holes?

The surface treatment methods for perforated metal sheets with round holes mainly include the following:
 
Electroplating
Electroplating is a common surface treatment method that covers the surface of the perforated sheet with a metal coating, improving its corrosion resistance, aesthetics, and durability. Common types of electroplating include zinc plating, chrome plating, and nickel plating.
 
Spraying
Spraying involves applying a layer of coating to the surface of the perforated sheet. This not only prevents corrosion but also enhances the decorative effect. Colors and coating types can be customized according to customer requirements.
 
Anodizing
Mainly used for aluminum perforated sheets, anodizing forms a dense oxide film on the surface, enhancing wear resistance and corrosion resistance. It can also include dyeing processes to improve aesthetics.
 
Brushing
The brushing process creates a uniform streak texture on the surface through mechanical treatment, adding texture and decorative effects, typically for high-end products.
 
Polishing
Polishing can be divided into mechanical, chemical, and electro-polishing. It is primarily used to improve the surface smoothness and gloss of perforated sheets.
 
Pickling and Passivation
Pickling and passivation are applied to stainless steel perforated sheets to remove surface oxidation scales and impurities, thereby enhancing corrosion resistance.
 
Hot-Dip Galvanizing
Hot-dip galvanizing involves coating the surface with a thick layer of zinc at high temperatures, providing long-lasting corrosion protection, suitable for outdoor applications.