Polyurethane Cable Tray / PU Composite Cable Tray

1. Product Overview

Polyurethane Cable Tray (PU Composite Cable Tray) is a new type non-metallic composite cable support. It is pultruded/molded integrally with modified polyurethane resin as matrix and alkali-free fiberglass as reinforcing skeleton, without any metal composition. It combines outstanding corrosion resistance, high-tough insulation, lightweight & wide temperature adaptability, impact crack resistance. It overcomes the defects of ordinary FRP trays such as high brittleness, easy cracking at low temperature and fiber dust during construction. It is specially used for chemical, coastal, tunnel, energy storage, rail transit and other projects with strong corrosion & extreme temperature difference environments.

2. Modified Material Grades

1. General Weatherproof PU Tray
Cost-effective basic grade, resistant to moisture, weak acid, alkali and UV. Suitable for outdoor photovoltaic, general utility tunnels and humid workshops, stable from -30℃ to 80℃.
2. Vinyl Modified High Anti-Corrosion PU Tray
Superior resistance to strong acid, alkali, chloride ion, chemical waste gas and seawater salt spray, better than ordinary polyester FRP. For electroplating, pharmaceutical, seawater desalination and coastal docks.
3. B1 Flame Retardant & Anti-Static PU Tray
Environment-friendly flame retardant & antistatic additives, B1 fire rating, no spark risk & low toxic smoke. Applicable to oil & gas dust explosion-proof workshops, energy storage power stations and mine tunnels.
4. Low-Temperature Special PU Tray
High-toughness modified formula, no brittle cracking at -40℃, for cold northern factories, open-air bridges and alpine wind power projects.

3. Four Main Structural Types

1. PU Solid Channel Cable Tray (Fully Enclosed)
Integrated box with snap-on covers, fully dust-proof, isolated corrosive gas & anti-electromagnetic interference, ideal for precision instruments, optical fiber and weak control cables.
2. PU Ladder Cable Tray
Open rung design with best heat dissipation, ultra-lightweight for large-section high-voltage cables & long-distance overhead installation in high-temperature workshops.
3. PU Perforated Tray Cable Tray
Semi-closed base with uniform heat dissipation holes, balancing load bearing & heat dissipation, widely used for power cable routing in industrial plants.
4. PU Long Span Cable Tray
Thickened profile with composite reinforcing ribs, single unsupported span up to 2–4m, reducing support quantity for large factories and municipal utility tunnels.

4. Core Product Advantages

1. Excellent temperature toughness, no cracking in cold & no sagging under high heat
Stable working range -40℃~120℃; no brittle crack in winter, no deformation under summer sunlight, solving rust problem of steel trays & low-temperature cracking of FRP trays.
2. Ultimate chemical corrosion resistance, zero rust risk all service life
Non-metallic material eliminates electrochemical corrosion, resistant to acid, alkali, salt spray, hydrogen sulfide and organic solvent. Service life reaches 30 years in coastal & chemical areas, no regular rust removal or repainting needed.
3. Intrinsically high insulation, explosion-proof without eddy current
High insulation resistance, non-conductive, no eddy current heating & no signal interference for precision cables; no spark hazard for explosion zones, grounding jumper unnecessary.
4. Lightweight & easy clean installation
Only 1/4 weight of carbon steel tray, about 1/3 lighter than FRP tray. Compact smooth surface without falling fiber dust, easy to carry & cut by single worker, shortening construction period by 30%.
5. Impact & vibration resistant, hard to damage in long-term use
Balanced rigidity & elasticity, resistant to cracking under collision or long-term vibration, perfect for rail transit, mines and production lines (FRP trays are brittle and easy to break under impact).
6. Eco-friendly & anti-aging for long outdoor service
Free of heavy metals & harmful volatiles; anti-UV & weather-proof, no chalking, fading or cracking under open-air exposure for photovoltaic and cross-sea bridge projects.
7. Full set matching non-metallic accessories for uniform anti-corrosion
Complete PU fittings including splice plates, elbows and support arms, consistent anti-corrosion performance along the whole wiring route without rust-prone metal parts.

5. Standard Specifications

Size (Width × Height mm): 100×50, 200×100, 300×100, 400×150, 600×200, 800×200
Wall thickness: 3–6mm; standard length 4m per piece, custom width, height, span, dividers and colors (grey/green/blue/cream white) available.

6. Application Range

Chemical industrial parks, electroplating plants, pharmaceutical workshops, sewage treatment plants, coastal ports, offshore wind power, seawater desalination stations, oil & gas explosion-proof zones, mine tunnels, photovoltaic energy storage stations, municipal underground utility tunnels, metro rail transit, alpine open-air bridges, non-ferrous metal smelters, hospital clean equipment rooms.

7. Matching Accessories

PU splice plate, PU cover, horizontal elbow, inner & outer vertical elbow, tee, reducer, divider, PU support bracket, anti-corrosion stainless steel fasteners, expansion anchors