How to make a round galvanized cable tray

To make a round galvanized cable tray, select high-quality steel, shape it into a circular form, and apply a durable zinc coating through hot-dip galvanization or zinc plating.

Material Selection

Start with cold-rolled or hot-rolled steel depending on the strength requirements. Cold-rolled steel is smoother and ideal for visible installations, while hot-rolled steel is stronger for heavy-duty industrial use. Choose a thickness that can support the expected cable load without sagging; typically, 2.

0 mm is used for large spans.

Shaping the Tray

Cut the steel sheet to the required width and length for your round tray. Bend the metal into a circular or cylindrical shape using a rolling machine or press brake. Ensure the radius matches your design specifications.

Avoid sharp bends that could weaken the steel or create stress points. If perforations are needed for ventilation or cable cooling, punch holes using a CNC puncher before bending.

Galvanization

Surface Preparation: Degrease, wash, and acid-pickle the steel to remove oils, dirt, and oxidation. Flux Treatment: Apply a chemical flux to enhance zinc adhesion.

Hot-

Dip Galvanizing: Submerge the shaped tray in molten zinc to form a metallurgical bond, ensuring full coverage of the round surface. Alternative Coatings: For smaller or delicate trays, zinc spray or electroplating can be used, but hot-dip galvanizing provides the most durable protection.

Assembly and Finishing

Ensure smooth edges to prevent cable damage. If the tray is modular, connect sections with compatible hardware. Inspect for uniform zinc coating and structural integrity before installation.

Key Considerations

Load Capacity: Calculate the total weight of cables to avoid overloading the tray. Environmental Exposure: For outdoor or humid environments, use thicker galvanization (≥45 µm) for long-term corrosion resistance. Maintenance: Galvanized trays require minimal maintenance but inspect periodically for scratches or damage that could expose steel to corrosion.

By following these steps, you can fabricate a custom round galvanized cable tray that is strong, corrosion-resistant, and suitable for industrial or commercial installations.