FRP Bridge Tray (also known as FRP Bridge Tray, Fiber Reinforced Plastic, Fiber Reinforced Composite Bridge Tray) is a kind of cable support equipment made of resin and glass fibre composite, which is mainly used for cable laying and management. Compared with the traditional metal bridge (such as galvanised steel, aluminium alloy), it has unique advantages and is suitable for specific environments.

The main role of FRP bridge 

1. Cable support and protection 

It is used for overhead or along-wall laying of electric power, communication and control cables, keeping the cables neat and orderly and avoiding mechanical damage.

Layers can be designed to separate different voltage levels of cables, reduce interference and security risks.

2. Strong corrosion resistance 

Applicable environment: chemical industry, petroleum, marine, sewage treatment plants and other highly corrosive places (acid, alkali, salt spray environment).

Comparison of metal bridge: no need to galvanise or spray anti-corrosion treatment, long-term use of non-rust, non-corrosion.

3. Good insulation performance 

Non-conductive, suitable for areas sensitive to electromagnetic interference (e.g. data centres, laboratories) or where insulation is required.

It can reduce the risk of cable short-circuit and improve safety.

4. Light weight and high strength 

Weight is only 1/4 of steel bridge, easy to install and reduce the load of bracket.

The glass fibre reinforcement makes it impact-resistant, and the carrying capacity is better than plastic bridge.

5. Fireproof and flame retardant 

Some models are treated with flame retardant treatment (e.g. oxygen index ≥28), which meets the requirements of fire prevention and reduces the risk of fire spreading.

6. Good weather resistance 

Adapt to high temperature (-40℃~120℃), humidity, UV environment, outdoor use is not easy to aging.

7. Aesthetics and customizability 

Smooth surface, adjustable colour (common grey, green), suitable for places with high aesthetic requirements.

It can be designed into ladder type, tray type, trough type and other structures to meet different laying requirements.

Typical application scenes 

Industrial field: chemical plants, power plants, metallurgical plants and other corrosive environments.

Transport facilities: subways, tunnels, airports (humid or salt spray environment).

Energy engineering: cable management for wind power and photovoltaic power stations.

Communication and power: 5G base stations, data centres, substations.

Municipal engineering: sewage treatment, underground corridors.

Comparison with metal bridges 

Characteristics FRP bridges Metal bridges (galvanised steel/aluminium alloy) 

Corrosion resistance Extremely strong Requires anti-corrosion treatment, may still rust in the long term 

Lightweight (easy to install) Heavier 

Insulation Superior Conductive, additional insulation required 

Cost Higher Lower 

EMI resistance No shielding Electromagnetic shielding available (aluminium alloy) 

Cautions 

Mechanical strength: extreme heavy-duty scenarios (e.g. large-scale mines), although high strength Metal bridges may still be required.

Fire rating: Choose a model that meets local fire standards (e.g., flame retardant, fire resistant).

Fiberglass reinforced plastic (FRP) bridges fill in the shortcomings of metal bridges in special environments through its corrosion resistance, insulation and light weight, which is one of the important solutions for modern cable laying.