GRP Box Sections

Description

GRP box sections for frames, posts and fabricated structures

GRP box sections are square hollow pultruded fibreglass profiles used for corrosion-resistant frames, posts, supports, guards and fabricated access details. They are a practical choice where low weight, corrosion resistance and electrical non-conductivity are useful in industrial, utilities, water, rail, marine and exposed environments.

The GRP Express range includes 38 x 38 mm, 50 x 50 mm, 50.8 x 50.8 mm, 60 x 60 mm, 76 x 76 mm and 101 x 101 mm box sections, with wall thickness, length and colour controlled through the product variations. Choose the closest stocked option from the selector or contact the team if the section needs to match a drawing, schedule or existing installation.

Key benefits

• Corrosion-resistant square hollow profile for wet, exposed and industrial environments.
• Lightweight section for easier handling, cutting and fabrication compared with many metal alternatives.
• Electrically non-conductive material for suitable electrical and utilities applications.
• Useful profile shape for posts, rails, frames, guards, supports and access details.
• Available in stocked 5 m and 6 m options, with cut-to-length and project quotation routes available.

Confirmed options

Material and manufacture

GRP box sections are manufactured by pultrusion, drawing glass reinforcement and resin through a heated die to create a consistent square hollow section. Matching standard profile options are published against BS EN 13706 E23 material-grade expectations where applicable.

Published material-property figures describe the profile material, not a guaranteed load capacity or allowable unsupported span for every installation. Confirm the complete application, support arrangement, connection detail and fixing method before using any profile in a structural or safety-related duty.

Typical applications

• Frames, posts, supports, guards and fabricated access structures.
• Handrail, platform, walkway and service-route details.
• Equipment supports, edge protection, cable-support details and protective structures.
• Water, utilities, electrical infrastructure, chemical, rail, marine and industrial sites.
• Replacement details where corrosion resistance and lower handling weight are priorities.

Choosing the correct box section

Confirm the required profile size, wall thickness, supplied length, colour, fixing method and quantity before ordering. Where the section is part of a support, guard, platform or load-bearing detail, confirm the span, restraint, connection type, edge distance and expected loading before installation.

Where resin system, colour, RAL reference or site exposure matters, include those requirements with your enquiry so the specification can be checked against the available variation data.

Installation and fixing guidance

GRP box section fixing depends on the supporting structure and the way the section is used. Confirm hole positions, fastener type, edge distance, substrate and any cutting, drilling or notching requirements before work starts. For fabricated assemblies, send drawings or sketches where possible.

• Use fixings suitable for the substrate and operating environment.
• Maintain suitable edge distances and avoid unnecessary stress concentrations.
• Use suitable composite cutting and drilling tools.
• Plan dust control, PPE and edge finishing before cutting or drilling.
• Check finished assemblies before putting access routes or equipment areas into use.

Cutting and project support

GRP Express can discuss cut-to-size assistance, project quantities and technical support. Share the SKU, finished lengths, quantities, tolerance notes, edge-finishing requirements and delivery location.

1. Standard stock: choose the required box section using the product options.
2. Cut to size: send finished dimensions through the cut-to-length profile service.
3. Project quantities: request pricing for schedules and repeat requirements through bulk material quotes.
4. Technical support: use technical product support or contact GRP Express through Contact.

Review Delivery and Collection before ordering long lengths. Regular buyers can also review Trade Accounts for account purchasing routes.

Frequently asked questions

What are GRP box sections used for?
They are used for frames, posts, supports, guards, rails and fabricated access components where a corrosion-resistant square hollow profile is useful.

Can GRP box section be cut to length?
Yes. Send the finished lengths, quantities and tolerances through the cut-to-length route or include them with a project enquiry.

Which size should I choose?
Selection depends on profile size, wall thickness, length, fixing method and the duty of the finished detail. Ask technical support where the section has a structural or safety-related role.

Are grey and yellow profiles available?
Selected stocked variations are available in grey or yellow. Choose a variation to confirm the listed colour and specification.

Can GRP Express quote from drawings or a material schedule?
Yes. Send drawings, profile sizes, cut lengths, quantities and the delivery postcode so the team can prepare a project quotation.

Can I use GRP box section as a structural support?
Some support details can use GRP box section, but span, load, fixing and connection assumptions must be confirmed against the project requirement before installation.