The main purpose of surface treatment is to increase the corrosion resistance, and some parts also take into account the color. Therefore, it is mainly for carbon steel products, which generally need surface treatment.
The common surface treatments are: blackening, zinc plating, copper plating, nickel plating, chromium plating, silver plating, gold plating, Dacromet, hot dip galvanizing, etc;
There are many kinds of zinc plating, including blue white zinc, blue zinc, white zinc, yellow zinc, black zinc, green zinc, etc. at the same time, there are also environmental protection and non environmental protection. Each type of plating has a variety of coating thickness to meet different salt spray test results.