Hex Head Concrete Screw Bolt Cement Nails Fixing Screw

There are mainly the following surface treatment methods for cement nails:

Galvanizing: According to different processes, galvanizing can be divided into hot-dip galvanizing and electro-galvanizing. The zinc layer formed by hot-dip galvanizing is thicker, which is suitable for anti-corrosion needs in harsh environments; the zinc layer formed by electro-galvanizing is thinner, which is suitable for decoration and mild anti-corrosion in general environments.

Blackening: A layer of oxide film is formed on the surface of cement nails through chemical reaction, which usually appears black or blue-black. This treatment method is low-cost and can improve the corrosion resistance of cement nails to a certain extent, but the anti-corrosion performance is relatively weak, especially in harsh environments.

Blueing: Similar to blackening, but the specific process and effect are slightly different. It is mainly used to improve the corrosion resistance and aesthetics of cement nails.

Copper plating: A layer of copper is plated on the surface of cement nails to enhance their corrosion resistance and aesthetics. Copper plating can provide a certain anti-corrosion effect, but the cost is relatively high.

Phosphate treatment: Soak the cement nail in phosphate solution to form a phosphate film on its surface to improve corrosion resistance. Oiling is usually required to enhance the anti-corrosion effect.

Spray painting: Use a spray gun to evenly spray a thin layer of color on the surface of the cement nail, mainly used to beautify the appearance and provide certain anti-corrosion performance.

These surface treatment methods have their own advantages and disadvantages. The choice of the appropriate treatment method can be determined according to the specific use environment and needs.