China Galvanized Trunking Cable Tray Manufacturer
Galvanized Trunking Cable Tray is a fully enclosed cable management system manufactured from cold-rolled steel sheet with galvanized surface treatment. It is designed for supporting, protecting, and routing electrical power cables, control cables, and communication cables. The fully closed structure provides excellent dustproof, anti-interference, and anti-corrosion performance for indoor and outdoor electrical wiring projects.
Hot Dip Galvanized (HDG / Post-galvanized) Trunking Cable Tray
The finished tray is completely immersed in molten zinc at high temperature after fabrication. The zinc coating is thick, uniform, and covers both internal and external surfaces.
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Coating thickness: ≥85μm
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Corrosion resistance: Excellent, salt spray resistance up to 1000+ hours
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Service life: 30+ years in harsh environments
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Application: Outdoor projects, coastal areas, chemical plants, power plants, industrial corrosive environments
Pre-galvanized (Mill Galvanized)
Steel sheets are galvanized first, then cut and bent into tray shapes. The coating is thin and smooth with uniform surface texture.
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Coating thickness: Approximately 20μm
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Corrosion resistance: Moderate, suitable for dry environments
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Application: Indoor buildings, commercial buildings, general industrial workshops
Galvanized Common Sizes (Width × Height, mm)
50×50, 100×50, 100×100, 200×100, 300×100, 300×150, 400×150
Plate Thickness
1.2mm / 1.5mm / 1.8mm / 2.0mm (custom thickness available)
Standard Accessories
Cover, straight connector, inner bend, outer bend, horizontal tee, cross joint, reducer, suspension bracket, fixing bolts and nuts
Product Advantages
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Superior anti-corrosion performance: Zinc layer isolates air and moisture, effectively preventing rust and oxidation.
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Full enclosed protection: Dust-proof, waterproof, and anti-electromagnetic interference, ideal for sensitive signal cables.
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High structural rigidity: Integrated bending structure ensures strong load-bearing capacity, suitable for heavy-duty power cables.
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Easy installation & maintenance: Standard modular design for fast assembly and convenient later cable inspection and replacement.
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Cost-effective: Lower investment and maintenance cost compared with stainless steel trays, with long service life.
Galvanized Trunking Cable Tray Application
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Commercial & civil buildings: Office buildings, shopping malls, residential buildings, hotel electrical systems
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Industrial fields: Factory workshops, machinery manufacturing, chemical, petroleum, pharmaceutical industries
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Data & communication rooms: Weak current wiring, signal cable routing
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Infrastructure projects: Municipal engineering, photovoltaic power stations, bridge and tunnel wiring
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Harsh environments: Coastal high-humidity and salt-fog areas, corrosive industrial sites (HDG type recommended)
Difference Between Trunking, Tray and Ladder Type
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Trunking (Fully enclosed): Best dustproof and anti-interference effect; suitable for signal cables, weak current systems; ordinary heat dissipation.
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Perforated Cable Tray: Bottom perforated for better heat dissipation; suitable for medium-load power cables.
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Ladder Cable Tray: Open ladder structure with optimal heat dissipation; high load capacity for large-diameter heavy power cables.
All Galvanized trunking cable tray ,whatever types, are complying with international standards: EN 1461, GB/T 23639, ISO 1461
Galvanized Trunking Cable Tray Vs. Aluminum Cable Tray
Galvanized trunking cable tray features high load capacity, low cost and good EMI shielding, ideal for indoor use and heavy power cables. Yet it is heavy and may rust if the zinc coating gets damaged.
Aluminum type is lightweight, corrosion-resistant and heat-dissipating, easy to install for humid, coastal or high-temperature areas and weak current cables. It costs more, has lower bearing capacity and scratches easily
