Cable trays are cable support systems composed of supports, cantilever arms, and mounting accessories. Typically made of metal or fiberglass-reinforced plastic (FRP), they come in various structural types, such as trough, tray, ladder, and wire mesh configurations. They can be installed independently or mounted on building structures and utility rack supports. Characterized by simple construction, aesthetic appeal, flexible configuration, and ease of maintenance, they are widely used in industrial and construction sectors. All components require anti-corrosion treatment, such as galvanizing or powder coating; for outdoor installations or in corrosive environments (such as coastal areas), materials offering moisture resistance, strong adhesion, and impact resistance must be used. Installation designs must account for thermal expansion and contraction, incorporating expansion joints as necessary.
Engineering design requires selecting tray specifications based on load ratings and cable fill ratios, with structural strength and deflection verified through calculation. Common types include fully enclosed trough structures, heavy-duty tray designs, modular/flexible assembly systems, and long-span trays; aluminum alloy variants, offering inherent corrosion resistance, are suitable for specialized environments.
