GRP Pultrusions
GRP Pultrusions - GRP Profiles
GRP Pultrusion and GRP Profiles are composite structures that are used in a wide range of applications, offering excellent chemical resistance, high strength and thermal values. Captrad composite structures include GRP Angle, GRP Box Section, GRP channel, I-Beam, Wide flange beam, GRP Tube, GRP Rods, Flat Bars and others etc. These pultruded GRP Profiles are used in a wide range of applications, offering a unique combination of chemical resistance, size stability, high strength, and thermal, electric non-conductivity. Each composite structure shape is available in a number of dimensions to suit a variety of design and application requirements. For special uses, custom shapes are also available.
Captrad Ltd also has a full range of GRP Cable Trays and GRP Cable Ladders that can be used in a variety of environments from the rail, offshore to industrial. All our products are produced under ISO 9000 registered quality assurance systems and are all fully compliant with BS EN13706- Specifications for Pultruded Profiles.
GRP pultruded profiles are supplied from stock and we have an extensive range of glass fibre reinforced structural profiles all extruded profiles are manufactured to the same high quality.
Captrads composite structures are made from glass reinforced isophthalic polyester resin with a polyester surface veil. This combination gives excellent corrosion resistance and weather ability at an economic cost.
Composite structures made from these profiles are substantially lower in cost than stainless steel and cost-competitive with hot-dipped galvanised mild steel.
Pultruded GRP is also available in other resin systems upon order.
The standard BS EN 13706 – Specification for GRP Pultruded Profiles, defines two performance grades. Our structural profiles (t > 5mm) can meet the higher performance E23 grade.
Our GRP extruded profiles meet the requirement of the Drinking Water Inspectorate for use in potable water. All of the GRP Pultrusion is available in a variety of resins depending upon the application:
- Polyester is suitable for most industrial applications.
- Vinylester affords improved corrosion resistance and physical properties.
- Epoxy offers superior thermal stability and corrosion resistance.
- Modar improves fire performance and smoke emissions.
- Phenolic maximises fire performance and is offered as an alternative to Modar.
Products Information
Please click on each image or title to find out more!
GRP Flat Bar
GRP Kick Plate
GRP Ladder Rung
GRP Tube
Technical data for GRP Pultruded Profiles
The table below shows the minimum properties to comply with the two grades defined in the BS EN 13706.
Composite Structures - GRP Fabrications
Frequently Asked Questions About GRP Pultrusion
What is GRP Pultrusion?
GRP Pultrusion is a manufacturing process used to create strong, lightweight, and corrosion-resistant Glass Reinforced Plastic (GRP) profiles. Continuous fibres are pulled through a heated die with resin to form consistent, high-performance structural shapes such as beams, channels, and tubes.
What are the main benefits of using GRP pultruded profiles?
GRP pultruded profiles offer excellent corrosion resistance, high strength-to-weight ratio, low maintenance, electrical insulation, and long-term durability. These benefits make them ideal for construction, industrial, and marine applications.
What industries commonly use GRP pultruded products?
Pultruded GRP profiles are used across many sectors, including construction, rail, water treatment, oil & gas, utilities, chemical processing, and marine environments due to their durability and resistance to harsh conditions.
Are GRP pultrusions stronger than steel or aluminium?
While GRP pultrusions are lighter than steel and aluminium, they offer an impressive strength-to-weight ratio. They are not always “stronger” in pure tensile terms than steel, but they outperform metals in corrosion resistance, fatigue, and lifespan—making them a superior choice for many applications.
Can GRP pultruded profiles be customised?
Yes. GRP pultrusions can be manufactured in custom shapes, colours, resin systems, and fibre configurations to suit specific project requirements. Custom tooling can also be created for unique profile designs.
What types of GRP pultruded profiles are available?
Are GRP pultrusions suitable for outdoor use?
Absolutely. GRP pultrusions are UV-stable, weather-resistant, and corrosion-proof, making them ideal for long-term outdoor applications such as walkways, platforms, handrails, and structural frameworks.
How long do GRP pultruded products last?
GRP pultrusions are known for their long service life, typically lasting 25–50 years or more depending on the environment. Their resistance to rust, chemicals, and UV exposure significantly extends their lifespan.
Are GRP pultruded profiles easy to install?
Yes. GRP is lightweight and easy to cut, drill, and handle on-site, reducing installation time and labour costs. This makes it a practical alternative to steel or aluminium structures.
Are GRP pultrusions environmentally friendly?
GRP pultrusions require less energy to produce compared to metal alternatives and have long lifespans, reducing the need for replacements. Many manufacturers also offer recyclable GRP options and low-VOC resin systems.
Associated Products
Our product range covers everything from GRP panels, moulded products, and handrails to WPC decking, PETG, and polycarbonate sheets — all designed and manufactured to the same high-quality standards. Whether you need durable fibreglass components, structural GRP profiles, or non-slip safety solutions, we provide versatile materials suitable for construction, industrial, and commercial applications across the UK and Ireland.
Manufacturing, Stocking and Delivering GRP Products
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01695 280510