Cable Tray
What is Cable Tray?
The tray-type cable tray adopts a flat bottom and low edges on both sides to form a shallow trough structure, which is suitable for carrying multiple cables. It is characterized by flexible installation, good ventilation and heat dissipation, and can prevent cables from sliding, but it is less dustproof. The tray-type cable tray is usually made of galvanized steel, aluminum alloy or fiberglass, suitable for the laying of power cables and control cables, and is commonly seen in industrial plants, data centers, commercial buildings and other scenes. Its advantages are low cost and moderate load-bearing capacity, which is suitable for medium-scale cable wiring needs.
Key Structural Features
Base: A flat load-bearing surface for laying cables evenly.
Side Edges: Typically 20-50mm low edges to prevent cables from slipping.
Open Design: Perforated or open structure for heat dissipation and drainage.
Connection Method: Bolted, clamped, or welded for flexible expansion.
Core Advantages
Moderate Load Capacity: Suitable for dense routing of small to medium-sized cables (typically ≤50kg/m).
Good Heat Dissipation: Open structure provides better ventilation than enclosed trays, reducing overheating risks.
Flexible Installation: Supports horizontal, vertical, or angled layouts for complex environments.
Cost-Effective: More economical than channel-type or ladder-type trays.
Comparison with Other Tray Types
| Feature | Tray-Type | Channel-Type | Ladder-Type | Ladder-Type |
| Structure | Shallow trough + low edges | Fully/semi-enclosed | Ladder rungs + side rails | Metal mesh |
| Protection | Prevents cable slippage | Dust/water/EMI-proof | Poor dust protection | Fully open |
| Load Capacity | Moderate (≤50kg/m) | Medium (requires reinforced cover) | High (≥100kg/m) | Low (≤30kg/m) |
| Typical Use | General power distribution | Sensitive circuits, hazardous areas | Heavy industry, power mains | Data centers, low-voltage cabling |
Comparison table of cable tray selection of different materials
| Type | image | Material Properties | Optimal Application Environment | Advantages | Limitations | Cost Level |
|
Powder-Coated Cable Tray |
 |
Cold-rolled steel sheet with electrostatic spray coating (thickness 0.8-2.0mm) | Dry indoor environments (malls, office buildings) | - Color options (aesthetic) - Slight corrosion resistance - Cost-effective |
- Poor scratch resistance - Fades easily outdoors |
★★☆ |
| Galvanized Cable Tray |  |
Hot-dip galvanized steel sheet (zinc layer ≥65μm) | General industrial environments (factories, garages) | - Strong rust resistance - Good load-bearing capacity - High standardization |
- Prone to rust if zinc layer damaged - Plain appearance |
★★★ |
| Fire-Resistant Cable Tray |  |
Steel base + fireproof coating (fire resistance ≥60 minutes) | Fire-critical areas (subways, hospitals, high-rise buildings) | - Complies with GB/T 9978 fire resistance standard - Low smoke emission |
- Heavy - Requires additional fireproof sealing |
★★★★ |
| Hot-Dip Galvanized Cable Tray |  |
Fully hot-dip galvanized (zinc layer ≥80μm) | High-humidity/mildly corrosive environments (ports, paper mills) | - Complete rust protection - Lifespan up to 20 years |
- Zinc layer may peel at high temperatures - Higher cost |
- ★★★☆ |
| Zinc-Aluminum-Magnesium Cable Tray |  |
Zn+5%Al+3%Mg alloy coating | Highly corrosive environments (coastal areas, chemical plants) | - Self-healing corrosion resistance - Salt spray resistance >1000 hours |
- Expensive - Low market penetration |
★★★★☆ |
| Stainless Steel Cable Tray |  |
304/316 stainless steel (thickness 1.0-3.0mm) | Extreme environments (nuclear plants, acid-washing workshops) | - Acid/alkali and high-temperature resistance - Lifespan exceeds 30 years |
- Extremely high cost - Requires protection against chloride corrosion |
★★★★★ |
| Aluminum Cable Tray |  |
Aluminum alloy (6063-T5) | Lightweight applications (data centers, communication base stations) | - Lightweight (1/3 the weight of steel) - Maintenance-free - EMI shielding |
- Low load capacity - Poor mechanical impact resistance |
★★★☆ |
| Fiberglass Cable Tray |  |
Fiberglass + resin composite | Strong acid/alkali environments (electroplating plants, wastewater treatment) | - Insulating/corrosion-resistant - Rust-free - Customizable shapes |
- UV degradation - Deforms at high temperatures |
★★★★ |
| Polymer Cable Tray |  |
PP/PE engineering plastics | Temporary projects/labs (low EMI requirements) | - Insulating/lightweight - Resistant to weak acids/alkalis |
- Flammable - Prone to deformation (load capacity <20kg/m) |
★★☆ |
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