Type: Cable Tray
Model: XQJ LQ
Params: I. Classification & Model Code
Trough type (C): Fully enclosed, dust & shielding; GQJ-C(steel), LQJ-C(aluminum), BQJ-C(FRP)
Perforated tray type (P): Ventilated bottom for heat dissipation; GQJ-P, LQJ-P
Ladder type (T): Ladder rungs, superior ventilation; GQJ-T, LQJ-T
Fire-resistant type (FQJ), fire-proof type, composite type (FBQJ)
II. Dimension Specifications
Standard Width B: 100, 200, 300, 400, 500, 600, 800, 1000mm
Standard Side Height H: 50, 75, 100, 150, 200, 300mm
Standard Section Length: 2m, 3m; custom length 0.5/1/1.5m available
National Standard Plate Thickness:
Trough & perforated tray: 1.2, 1.5, 1.8, 2.0, 2.5, 3.0mm
Ladder type: ≥1.5mm; heavy load extra thick 2.5~3.0mm
Matching Accessories: Straight section, horizontal elbow, vertical elbow, tee, cross, reducer, cover, partition, bracket, earth bonding plate
III. Mechanical Load Performance
Load Class: Light duty ≤120kg/m, Medium duty ≤200kg/m, Heavy duty ≤400kg/m
Deflection Limit: Uniform load deflection ≤1/200 of span; concentrated load ≤1/400 of span
Standard Support Span: 1.5~3m for indoor; ≤2m for outdoor & heavy load
Cable Fill Ratio: Power cable ≤40%, control cable ≤50%
IV. Protection & Anti-Corrosion Performance
IP Rating: Indoor trough IP30/IP40; Outdoor waterproof IP54, IP65 (with sealed cover)
Surface Treatment:
Electro-galvanized: Salt spray ≥48h, coating 8~12μm
Hot-dip galvanized: Zinc layer ≥65μm, salt spray ≥1000h for heavy corrosion
Electrostatic powder coating: Coating 60~80μm, salt spray ≥500h
Aluminum anodizing: Oxide film ≥10μm
Fire-resistant tray: Fire endurance 0.5h/1h/2h, fireproof layer ≥12mm
V. Electrical Performance
Electrical Continuity: Continuous bonding, earth resistance ≤0.1Ω, supplied with copper bonding jumper
Insulation (FRP tray): Insulation resistance ≥100MΩ, power frequency withstand voltage 2kV no breakdown
Flame retardancy (FRP): Oxygen index OI ≥32, self-extinguishing after flame removal
VI. Service Environmental Conditions
Ambient Temperature: -20℃ ~ +60℃; fire-resistant type withstand 950℃ short-term
Altitude: ≤2000m; reinforced structure & thicker plate required above 2000m
Relative Humidity: Daily average ≤95%, no condensation; TH type for damp & corrosive atmosphere
Environment: Free of strong corrosive gas, flammable & explosive dust, severe vibration
Material: Steel Cable Tray (GQJ)
Main plate: Cold rolled steel sheet, galvalume sheet; extra thick steel for heavy long-span type.
Surface treatment options: Electro-galvanizing, hot-dip galvanizing, electrostatic powder coating, fire retardant coating.
Covers & partitions: Same steel material as main body.
Earthing fittings: T2 pure copper braid, copper bonding plate.
Fasteners: Galvanized bolts, 304 stainless steel screws.
Aluminum Alloy Cable Tray (LQJ)
Main body: 6063 aluminum alloy sheet & extruded profile.
Surface finish: Anodizing, fluorocarbon coating.
Accessories: Matching aluminum elbows, tees, covers; stainless steel fasteners.
FRP Fire-resistant Cable Tray (BQJ/FQJ)
Main body: SMC unsaturated polyester glass fiber composite.
Inner fireproof layer: Fire-resistant rock wool, inorganic fireproof mortar.
Reinforcement frame: Galvanized steel inner strip.
Sealing cover: Same SMC FRP material.
Composite Fire-resistant Tray
Structure: Outer steel plate + middle fire insulation layer + inner
Applicable Industry: This product is widely used in the following industries:
Civil & Commercial Buildings
Office buildings, shopping malls, hotels, hospitals, schools, residential communities and exhibition centers for power, fire protection and monitoring cables.
Manufacturing Industry
Food factories, textile mills, rubber & plastic workshops, machinery plants, cement plants, paper mills and metallurgical workshops for power and control cables.
New Energy Industry
Photovoltaic power stations, energy storage rooms, EV charging stations and wind power projects for AC & DC cable layout.
Municipal Infrastructure
Urban utility tunnels, tunnels, road lighting, pump stations, sewage treatment plants and waste incineration plants.
Rail Transit & Logistics
Metro stations, high-speed railway stations, logistics parks, large warehouses and ports for power and communication wiring.
Data & Communication Industry
IDC computer rooms, communication base stations, monitoring rooms and server rooms for integrated wiring.
