Angle steel edging for cable trays

Angle steel, often supplied as angle plates or connectors, is used to protect cable tray edges, provide structural support, and facilitate safe cable routing.

Purpose and Application

Angle steel or angle plates are commonly used in cable tray systems to reinforce edges, create corners, and transition between sections. They help prevent damage to cables from sharp tray edges and maintain the structural integrity of the tray installation . Angle plates are available in 90° and 170° options, allowing for horizontal or vertical changes in tray direction . They can also serve as joint connectors between tray sections, ensuring alignment and load distribution .

Material and Corrosion Considerations

Cable tray angle steel is typically made from steel or stainless steel, with various galvanization or polished finishes to improve corrosion resistance . It is important to avoid mixing different metals (e.g., stainless steel with galvanized carbon steel) to prevent galvanic corrosion .

Installation and Fastening

Angle steel is usually supplied with matching fasteners, such as bolts, nuts, and washers, to secure the plates to the tray . When installing, screws should pass through the tray from the inner side, secured with combination nuts on the outer side to avoid damaging cables . For wider trays (400 mm or more), a joint plate may be required to prevent transverse bending .

Cutting and Handling Guidelines

When angle steel or cable tray components need to be cut on-site, safe cutting practices are essential. Recommended tools include band saws or circular saws with appropriate blades for the material thickness . Angle grinders can be used if other tools are impractical, but they require careful handling to avoid injury and material damage. Burrs should be removed after cutting, and surrounding materials should be protected from sparks and heat . Kevlar gloves and PPE are advised during handling and installation .

Summary

Using angle steel for cable tray edging ensures mechanical protection, structural support, and safe cable routing. Proper selection of material, fasteners, and cutting methods, along with adherence to safety standards, is essential for a durable and compliant installation .