There Ways of Surface Treatment

Magic 1,  Electroplating
Electroplating of fasteners means put the required fastener part in a specific aqueous. There are quite a quantity of the deposited metal compounds.Through the current, passed through the aqueous solution, then metal material in the solution deposits and adheres to the fastener. Electroplating of fasteners generally includes zinc, copper, nickel, chromium, copper-nickel alloys, and so on.
Magic 2, Hot-dip galvanized
The hot-dip galvanizing of the fasteners is carried out by dipping the blow-molded abrasive fastener of the carbon steel composition into the molten zinc bath of about 510 ° C. So that the iron-zinc alloy on the fastener surface changes to blunt Zinc.Thereby obtains the surface treatment. Hot-dip galvanized fastener processing price is higher than the plating.
Magic 3, Mechanical plating
Mechanical plating of fasteners refers to the means of specific physical and chemical. By the way of  powdering coated metal, so that the fastener can be mechanical plating by cold welding. Mechanical plating of fasteners is mainly applied to spare parts, such as screws, nuts and gaskets.