A Comprehensive Guide to Trough-Type Cable Trays

May 10, 2026

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What is a trough type bridge?
Trough trays are like 'highways' for cables, consisting of a metal trough and removable covers, designed to protect and organize cables. Different from ordinary bridges, its closed structure can effectively prevent dust and moisture, and is especially suitable for places with high environmental requirements such as chemical industry and electric power. Common materials include galvanized steel plates and aluminum alloys. The depth of the tank is usually 50-150mm, which can be flexibly selected according to the number of cables.

 

Interpretation of core advantages
Three-dimensional protection: The fully enclosed design forms a physical barrier, which can prevent small animals from biting the cable and avoid mechanical damage.

Heat dissipation optimization: Ventilation holes are reserved on the side walls, and combined with the thermal conductivity of metal materials, the cooling effect is 40% higher than that of PVC trunking.

Convenient expansion: The modular structure supports horizontal expansion. When adding new cables, only local modifications are needed, saving 60% of construction time.

 

Typical application scenarios
In large data centers, trough-type bridges are often used as backbone channels, and a single cable can carry 800 Category 6 network cables; in factory automation production lines, their anti-electromagnetic interference properties ensure the stability of signal transmission. Note during installation: the turning radius should be greater than 6 times the cable diameter, and expansion joints should be installed every 30 meters in the straight line section to accommodate thermal expansion and contraction.

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