Pultruded Cable Tray Specifications

Pultruded cable trays are high-strength, corrosion-resistant, flame-retardant systems made from fiberglass-reinforced polyester or vinylester resins, designed to meet ASTM, NEMA, and IS standards.Material and Construction

Pultruded cable trays are manufactured using fiberglass-reinforced plastic (FRP) through a continuous pultrusion process, which ensures high strength, stiffness, and dimensional accuracy . The resin systems used include polyester and vinylester, often with fire-retardant grades to achieve Class I flame retardancy and compliance with ASTM D-635 and ASTM E-84 . A surface veil is applied during pultrusion to provide a resin-rich surface, enhancing corrosion resistance and UV protection .

Mechanical and Physical Properties

• High strength-to-weight ratio, often surpassing equivalent steel trays .
• Lightweight, facilitating easier handling, cutting, and installation .
• Non-conductive and non-magnetic, making them suitable for sensitive electrical environments .
• Chemical and corrosion resistance, suitable for harsh environments including offshore and industrial facilities .
• Elastic recovery, returning to original shape under allowable loads without permanent deflection .

Dimensions and Types

• Widths: Typically from 50 mm to 1000 mm .
• Thickness: Side rails range from 4.5 mm to 6 mm depending on series and load requirements .
• Tray types: Ladder-type and perforated-type trays are available, with accessories such as elbows, tees, reducers, and coupler plates for modular assembly .

Fire and Safety Standards

• Flame retardant: ASTM D-635, ASTM E-84 Class I, BS 476 compliance .
• Electrical safety: Compliant with NEMA and other international electrical safety standards .
• Non-ignitable and self-extinguishing properties for solid electrical insulating materials .

Accessories and Installation

• Coupler plates, washers, nuts, and bolts supplied for connecting trays and fittings .
• Tray covers with suitable bolting arrangements for protection and safety .
• Oblong holes on side runners and accessories for easy alignment and installation .
• Support channels: Cantilever and trapeze junctions available for structural support .

Environmental and Operational Advantages

• UV-resistant for outdoor exposure .
• Long service life with minimal maintenance .
• Transparent to radio waves and does not transfer heat, preventing expansion issues .
• Suitable for onshore and offshore facilities, chemical plants, oil and gas, petrochemical, and manufacturing industries . Pultruded cable trays provide a durable, lightweight, and safe solution for cable management in demanding industrial and offshore environments, combining mechanical strength, fire safety, and environmental resistance.