Powder-coated trough cable tray (straight section/straight trough cable tray)
1. Product Definition
Power-coated straight trough cable tray is the basic main material of trough cable trays, and it is the straight wiring part of the entire wiring system. It uses galvanized steel sheet as the base material, with electrostatic powder spraying treatment on the surface. It is a U-shaped closed trough as a whole, which can be used with a cover plate. It is used for laying cables in straight sections, and cooperates with accessories such as elbows, tees, and supports and hangers to form a complete cable laying channel.
2. Structural Features
- Fully enclosed trough structureThe U-shaped box-type closed cavity forms a closed wire trough with the cover plate, which has the effects of dust prevention, rodent prevention and foreign matter prevention. At the same time, it can weaken electromagnetic interference, which is very suitable for network cables, communication cables, control cables and low-voltage power cables. Compared with the open ladder tray, the trough tray provides better protection for cables.
- End connecting wings + mounting holesLong oval connecting holes are reserved on the side plates at both ends of the tray. When two straight trays are butted, bolts are used to pass through the holes for locking and fixing. The long holes can accommodate on-site installation errors, facilitate quick alignment and splicing, and are also used to connect various tray accessories such as elbows and tees.
- Plate bending formingIt is formed by bending the whole steel plate, with flat joints and high strength, which can bear the self-weight of cables. Thickened plates can be selected for large-span heavy-load scenarios.
- Matching cover plateThe cover plate is made of the same material with powder coating, which is buckled on the top of the tray, with a buckle limit for easy disassembly and assembly, and maintains the overall closed protection of the tray.
3. Surface Process: Electrostatic Powder Spraying
A layer of epoxy resin powder is attached to the surface of the galvanized base material by electrostatic spraying process, and then formed through high-temperature curing.
- Advantages: Its anti-corrosion and anti-rust ability is better than that of ordinary electro-galvanized trays; the surface is smooth and beautiful, not easy to rust; it has good insulation; the color can be customized, and gray and white are the most commonly used in engineering.
- Limitations: It is not suitable for long-term immersion or strong acid and alkali chemical environments; hot-dip galvanized trays are preferred for outdoor high-salt spray scenarios.
4. Common Specifications
Specification marking: Width × Height (mm), which matches the supporting accessories such as elbows and tees with the same size. Common specifications: 100×50, 200×100, 300×100, 400×150, 600×200. Plate thickness: Select according to the cable load. Choose thin plates for weak current wiring, and thickened plates for large-section power cables. Conventional single-section length: 2 meters per piece, and 3 meters can also be customized.
5. Application Scenarios
Mainly for indoor comprehensive wiring scenarios: office buildings, shopping malls, basements, computer rooms, indoor strong and weak current engineering in factories, data centers. It is mostly used in suspended ceilings, cable trenches and equipment rooms to lay network cables, monitoring cables, fire control control cables and low-voltage power cables.
6. Installation Key Points
- Splice multiple straight trays, align the ports and tighten the bolts; the engineering specifications require the installation of grounding jumpers to ensure continuous electrical conduction.
- Fix the tray through supports and hangers, determine the spacing of the supports according to the load, and prevent the tray from deforming and sagging.
- Fasten the cover plate after the cable laying is completed to protect the cables.
7. Material Comparison
Table
| Type | Process | Applicable Environment |
|---|---|---|
| Power-coated trough tray | Galvanized steel sheet + electrostatic powder spraying | Indoor computer rooms, office buildings, pursuing aesthetics and medium anti-corrosion performance |
| Ordinary electro-galvanized trough tray | Steel plate electro-galvanizing | Ordinary indoor factories, giving priority to budget |
| Hot-dip galvanized trough tray | Overall steel dipping in zinc | Outdoor, humid and corrosive environments |
| Stainless steel trough tray | 201/304 stainless steel | Coastal areas, high-humidity and highly corrosive workshops |
| Electrical Equipment & Supplies/Power Distribution & Transmission/Cable Trays & Bridges | |
