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Surface Treatment processes for fasteners include coating the surface of the fastener with a layer of material to enhance its corrosion resistance, wear resistance, coefficient of friction, and appearance. At Gofast, we offer a range of surface treatment options, including electroplating and coatings, to meet the specific needs and requirements of our customers in the fastener industry.

1. Zinc plating: Zinc plating involves coating the surface of the fastener with a layer of zinc. It is one of the most common types of surface treatment in the fastener industry due to its cost-effectiveness and versatility. Zinc plating has good corrosion resistance and can withstand 48-720 hours in salt spray testing. It is an ideal choice for applications that require medium corrosion resistance and are not exposed to extremely harsh environments.
2. Nickel plating: Nickel plating involves coating the surface of the fastener with a layer of nickel. It has excellent corrosion resistance and wear resistance, making it an ideal choice for high-stress applications.
3. Chrome plating: Chrome plating involves coating the surface of the fastener with a layer of chromium. It has excellent corrosion resistance, wear resistance, and an attractive appearance. Chrome plating can withstand 120-240 hours in salt spray testing and is commonly used for decorative applications.
4. Zinc phosphate coating: Zinc phosphate coating involves coating the surface of the fastener with a layer of zinc phosphate. It has excellent corrosion resistance and can withstand up to 96 hours in salt spray testing. Zinc phosphate coatings are commonly used in automotive and military applications.
5. Lubricant coating: Lubricant coating involves coating the surface of the fastener with a layer of lubricant. It reduces friction between the fastener and its mating surface, prevents wear, and helps improve the installation process. Lubricant coatings are commonly used in high-stress applications where fastener failure is inevitable.
6. Hot-dip galvanizing: Hot-dip galvanizing involves immersing the fastener in molten zinc. This creates a thick and durable zinc coating that has excellent corrosion resistance and can withstand up to 480 hours in salt spray testing. Hot-dip galvanizing is commonly used in applications where fasteners are exposed to harsh environments, such as marine and construction applications.
7. Copper plating: Copper plating involves coating the surface of the fastener with a layer of copper. It has excellent conductivity, heat transfer, and corrosion resistance.
8. Zinc-rich coating: This refers to coating the fastener surface with a layer of zinc-rich paint. It contains a high concentration of zinc particles, which provide sacrificial protection against corrosion. Zinc-rich coatings can withstand up to 1000 hours in salt spray testing and are commonly used in marine, offshore, and industrial environments. Zinc-rich coatings also provide excellent adhesion to the substrate and can be used as a primer before applying a topcoat for additional protection.
9. Alloy plating involves coating the surface of a fastener with a layer of alloy, which can be a combination of metals such as nickel, copper, and tin. This process provides excellent corrosion resistance, wear resistance, and can improve the hardness of the fastener surface. Alloy plating is commonly used in high-stress applications, such as the aerospace and military industries, where fasteners need to withstand extreme conditions.

At Gofast, we are committed to meeting the different surface treatment requirements of our customers. We carefully select surface treatment options based on reference specifications and supplier recommendations, considering the maximum corrosion resistance hour and key characteristics in each field.

To provide a wide range of surface treatment options, our surface treatment supply chain is actively expanding, including zinc flake coatings and branded products, to meet the specific needs and requirements of our customers in the fastener industry.