Surface treatment of bolts

Hot-dip galvanizing: A thick zinc layer is formed on the surface of the bolt, providing long-term corrosion protection, suitable for outdoor and humid environments.

Electrogalvanizing: A thin zinc layer is formed on the surface of the bolt by electrochemical method, providing basic corrosion protection, suitable for general indoor environments.

Nickel plating: Improves the corrosion resistance and appearance quality of the bolt, suitable for application scenarios with high requirements for appearance.

Chromium plating: A bright chromium layer is formed on the surface of the bolt, enhancing wear resistance and corrosion resistance, while improving the decorative effect.

Phosphating: A chemical treatment method that forms a corrosion-resistant phosphating film to improve the corrosion resistance and surface hardness of the bolt.