1. Structural characteristics 

Modular design: adopting standardised components (straight section, elbow, tee, etc.), easy to assemble, expand and adjust.

Open structure: most of the bridges are open (such as ladder type, mesh type), which is convenient for heat dissipation and cable maintenance; there are also closed (such as slot type), which is used for dustproof or protection.

Strong load-bearing capacity: depending on the type, it can carry a large number of cables and lay them in layers to optimise the use of space.

2. Material characteristics 

Metal material: 

Steel bridge: high strength, good fire resistance, need to be galvanised or sprayed to prevent rust.

Aluminium alloy bridge: lightweight, corrosion-resistant, suitable for wet or corrosive environments (such as chemical, marine).

Non-metallic materials: 

FRP bridge: insulation, acid and alkali resistance, suitable for strong corrosive places (such as sewage treatment plants).

Plastic bridge: low cost, but poor temperature resistance and strength.

3. Functional features 

Cable protection: avoid cable mechanical damage, trampling or chemical corrosion.

Good heat dissipation: open design (e.g. grid-type) facilitates cable heat dissipation and reduces the risk of fire.

Flexible cabling: support horizontal, vertical or overhead laying, adapt to complex building structures.

Fire resistance: metal bridge can be upgraded by fireproof coating or closed design.

4. Types and Applicable Scenarios 

Types Characteristics Typical Applications 

Ladder type bridge Strong load bearing, good ventilation, suitable for large diameter cables or high voltage power lines. Substation, plant, outdoor laying 

Trough bridge Fully enclosed structure, dustproof, anti-interference, but poor heat dissipation. Data centre, precision equipment room 

Grid-type bridge Open grid design, light weight, excellent heat dissipation, easy for quick wiring. Communication base station, office building integrated wiring 

Tray type bridge Perforated tray at the bottom, taking into account the load-bearing and heat dissipation, high versatility. Commercial buildings, underground comprehensive pipeline corridor