Angle steel for cable tray supports typically ranges from 40×40 mm to 75×75 mm with thicknesses of 1.6–3 mm, depending on load and installation requirements.

Typical Dimensions and Thickness

Angle steel used for cable tray supports is generally L-shaped steel with equal or unequal legs. Common sizes include:

• Leg lengths: 40×40 mm, 50×50 mm, 65×65 mm, 75×75 mm
• Thickness: 1.6 mm to 3 mm for mild steel or galvanized steel
• Bolt sizes for fastening: M8 or M10 high-tensile bolts are commonly used The exact size is selected based on the weight of the cable tray, the type of cables (power, control, fiber optic), and the span between supports. Heavier loads or longer spans require larger and thicker angle steel to prevent deformation .

Material and Corrosion Protection

• Material: Mild steel or stainless steel is standard
• Surface treatment: Electro-galvanized, hot-dip galvanized, or powder-coated to resist corrosion, especially in industrial or outdoor environments

Installation Considerations

• Angle steel supports are typically welded or bolted to the structure (walls, ceilings, or steel beams) for maximum stability
• They are preferred in industrial environments where vibration, heavy loads, or mechanical stress is present
• For lighter installations or where height adjustment is needed, rod supports may be considered instead

Practical Guidance

• Measure the total cable load and span between supports before selecting the angle steel size
• Ensure compatibility with cable tray width and mounting hardware
• Follow local standards or manufacturer specifications for maximum load and deflection limits By choosing the appropriate angle steel size and thickness, you ensure structural stability, long-term durability, and safe cable management in your installation.