Common hanger for cable trays and fire pipes

Clevis hangers, trapeze hangers, rod hangers, strap hangers, G-hangers, and stand-off brackets are commonly used to support cable trays and fire protection pipes.

Hangers for Fire Pipes

Clevis Hangers: These are U-shaped hangers that cradle horizontal pipes and are suspended from threaded rods. They allow vertical adjustment and slight pivoting to accommodate thermal expansion or minor movement, making them ideal for fire sprinkler systems and mechanical piping in industrial or commercial installations . Trapeze Hangers: Trapeze hangers support multiple pipes or a combination of pipes and cable trays. A horizontal bar is suspended from two rods, distributing the load evenly and reducing the number of individual hangers required. They are commonly used in mechanical rooms or corridors where multiple services run parallel . Rod Hangers (Threaded Rod Supports): Vertical threaded rods are used to suspend clevis or split-ring hangers from ceilings or beams. They provide precise height adjustment and are widely used in commercial and industrial fire protection piping . Strap Hangers: Flexible perforated metal straps wrap around small-diameter pipes and attach to structural surfaces. They are suitable for lightweight fire pipes or temporary installations where quick support is needed .

Hangers for Cable Trays

G-Hanger Support Brackets: These are rigid overhead brackets designed to support cable trays, trunking, or baskets. They are available in various sizes (e.g., 100mm, 150mm) and are typically made from pre-galvanized or hot-dipped galvanized steel for corrosion resistance . Stand-Off Brackets: Used to mount cable trays at a specific clearance from walls or surfaces, stand-off brackets maintain proper spacing and allow airflow around cables. Sizes range from 50mm to 300mm depending on tray width and installation requirements . Trapeze Support Brackets: Similar to pipe trapeze hangers, these pre-assembled brackets support cable trays across a span, distributing the load evenly. They are ideal for long runs of cable trays and can accommodate multiple trays on a single support . Routing Rings and Hooks: For smaller cable bundles or flexible routing, cable management hangers such as hooks, rings, or loop hangers can suspend cables from rods or beams while preventing tension and vibration damage .

Material and Installation Considerations

• Materials: Common materials include pre-galvanized steel, hot-dipped galvanized steel, and stainless steel (A316/A4) for durability and corrosion resistance .
• Spacing: Hangers should be spaced according to pipe or tray weight, diameter, and applicable standards (e.g., BS EN 61537 for cable trays, BS 6946 for channel supports), .
• Load Distribution: Trapeze and stand-off brackets help distribute loads evenly, reducing stress on individual hangers and structural elements .
• Compliance: Ensure hangers and supports meet relevant electrical and fire safety standards, and are installed by competent personnel . By selecting the appropriate hanger type and material, both cable trays and fire pipes can be securely supported, ensuring safety, durability, and compliance with installation standards.