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FRP/GRP cable tray

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Limitations of traditional materials

Steel cable tray

Galvanized or painted steel cable trays are the standard, but they deteriorate quickly in humid or corrosive environments. Rust weakens their structure, compromises cable integrity, and necessitates frequent replacements. Their weight and electrical conductivity complicate installation and increase safety risks.

Aluminum cable tray

Aluminum, although lighter, remains conductive and is susceptible to galvanic corrosion when in contact with other metals. It deforms under impact and offers limited chemical resistance. Its high thermal conductivity can cause overheating problems in certain configurations.

PVC cable tray

PVC offers good electrical insulation but lacks mechanical strength for heavy loads, degrades under prolonged UV exposure and has low resistance to high temperatures and chemical solvents.

  • Cable trays in FRP / GRP / CFRP

GRP/FRP Cable Trays – Durability and Corrosion Resistance

GRP (Glass Reinforced Plastic) cable trays offer a revolutionary solution for cable management and routing in demanding industrial environments. Manufactured by pultrusion or molding, these systems combine continuous glass fibers and thermosetting resins to create lightweight, strong, and completely non-conductive structures.

Our range includes: Ladder-type cable trays with or without a cover, Perforated-type cable trays with or without a cover, and a wide range of accessories: coupling plates, splice plates, retaining clips, cable ties, separation strips, splices, and wall/ceiling/floor brackets.

Advantages of GRP/FRP Cable Trays

  • Total immunity to corrosion: Resistance to acids, alkalis, seawater, humidity and aggressive chemical agents.
  • Non-electrically conductive: Eliminates the risk of electrocution and simplifies system grounding.
  • 75% lighter than steel: Manual handling possible, reduced installation and lifting equipment costs.
  • Integrated UV resistance: No degradation or discoloration under prolonged sun exposure.
  • Non-magnetic: Does not interfere with electromagnetic signals, ideal for sensitive environments.
  • Low thermal conductivity: Reduces the risk of condensation and overheating of cables.
  • Quick installation: Bolt-on assembly, no welding or specialized tools required.
  • Exceptional longevity: 50+ years of service with visual maintenance only.
  • Fireproof options: Available with flame retardants (Class 1 ASTM E84).
  • Customizable: Widths, lengths, colours and configurations adaptable to the project.

Examples of applications of GRP/FRP cable trays

  • Electrical stations and substations: Optimal electrical safety, non-conductivity
  • Chemical and petrochemical plants: Resistance to corrosive and acidic agents
  • Water treatment and wastewater treatment plants: Resistance to H₂S, chlorine and humidity
  • Marine and coastal environments: Immunity to salt water and sea spray
  • Power plants: Non-conductivity, thermal resistance, personnel safety
  • Data centers and telecommunications: Non-magnetic, EMI/RFI transparent
  • Tunnels and underground infrastructure: Fire-resistant options, moisture resistance
  • Offshore platforms: Lightweight, marine resistant, low maintenance

Comparison of Cable Tray Materials: Steel, Aluminum vs. GRP/FRP

Property
Steel / Aluminum
FRP / GRP
Advantage
Corrosion
Rapid rust without protection
Total immunity
FRP/GRP
Weight
Heavy (requires crane)
1/4 the weight of steel
FRP/GRP
Electrical conductivity
Conductive (shock risk)
Non-conductive
FRP/GRP
Maintenance
Regular painting/galvanization
Almost none
FRP/GRP
Installation
Welding + heavy equipment
Simple bolting
FRP/GRP
UV resistance
Degradation / rust
Integrated protection
FRP/GRP
Chemical resistance
Low (corrosion)
Excellent
FRP/GRP
Life cycle cost
High (frequent replacements)
Reduced
FRP/GRP
Thermal conductivity
High (heat/cable issues)
Low (insulator)
FRP/GRP

Comparative Technical Properties of Cable Trays: Steel vs. GRP/FRP

Property
FRP/GRP Value
Steel Value
Remark
Density

~1,800 kg/m³

7,850 kg/m³

75% lighter
Tensile strength

70,000 - 100,000 psi

58,000 psi (A36)
Superior
Electrical conductivity
Non-conductive
Conductive
Optimal safety
Thermal conductivity
Low (insulator)
High
Cable protection
Chemical resistance
Excellent (acids, alkalis, solvents)
Poor without protection
Total immunity
UV resistance
Integrated (no degradation)
Degradation / rust
Increased longevity
Fire resistance
ASTM E84 Class 1 (optional)
Naturally high
Retardants available
Service life
50+ years

15-25 years (corrosive)

Minimal maintenance
Elastic modulus

20-40 GPa

200 GPa
More flexible
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Ready to Build the Future of Your Projects with GRP/PRV Composites?

Contact us today to discuss your project and discover how our PRV/GRP solutions can transform your infrastructure.

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  • faqs

Frequently asked questions

At MJS NEGOCE, we understand that choosing composite materials for your projects can raise many questions. To best support you, we have compiled answers to the most frequently asked questions from our clients. This section is designed to provide you with clear and transparent information about our GRP/FRP products, our lead times, warranties, and technical support. Our goal is to eliminate any uncertainty and allow you to make confident decisions, knowing you are working with a reliable and experienced partner.

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What are your delivery times? Far far away, behind the word mountains, far from the countries Vokalia and Consonantia, there live the blind texts. Separated they live in Bookmarksgrove right at the coast

Yes. All our GRP/PRV composites are certified according to ISO and ASTM standards. Each batch is audited and inspected before shipment. We guarantee complete traceability of raw materials and strict compliance with manufacturing standards.

Unlike steel, wood, or aluminum, our composites offer:

  • Complete corrosion resistance (ideal for coastal or industrial areas).
  • Exceptional lightness (75% lighter than steel).
  • A lifespan exceeding 50 years with virtually no maintenance.
  • Enhanced safety thanks to their non-conductivity (electrical and thermal).
  • Cost-effectiveness over the entire lifecycle, as maintenance costs are minimized.

Yes. We don't just sell materials. Our team supports each client with:

  • Choosing the most suitable product.
  • Technical sizing.
  • International logistics (Incoterms, customs, transport).
  • Post-delivery support and implementation training.

Absolutely. Our composites are designed to withstand the most demanding environments:

  • Coastal environments: resistance to salt water and sea spray.
  • Chemical plants: immunity to acids and solvents.
  • Humid areas: durability without rot or corrosion.
  • Sun exposure: integrated UV protection.

We work with a wide range of clients:

  • Contractors and construction companies.
  • Design offices and engineers.
  • Public organizations and NGOs.
  • Private investors seeking sustainable and competitive solutions.