Clean studio view of pultruded GRP box section profiles

PULTRUDED STRUCTURAL PROFILES

GRP Box Sections

Pultruded GRP box section for posts, frames, guards, supports and lightweight corrosion-resistant structures.

Box section applications

Posts and uprights

Handrail posts, equipment guards and vertical members coordinated with baseplates and rails.

Frames and enclosures

Rectangular and square frames for guards, screens, supports and access assemblies.

Fabricated modules

Cut and CNC-prepared parts for repeated frames, brackets and lightweight structural modules.

Specify the section, direction and support

Pultruded GRP is directionally reinforced. Geometry, fibre direction, span, restraint, connection and service environment must be considered together when the profile carries load.

  • Use box section terminology on schedules
  • Confirm square or rectangular outside dimensions
  • Check wall thickness and internal access
  • Detail sleeves, inserts or backing plates where required
  • Avoid crushing thin walls at bolted connections

Information needed for selection and quotation

InputWhat to confirmWhy it matters
SectionOutside width and height, wall thickness and corner radiusDefines geometry, fit and available material data.
Length and quantityStock lengths, finished cuts, tolerance and piece countControls cutting yield, labelling and packing.
Structural dutySpan, supports, loads, deflection and restraintAllows the designer to verify section suitability.
PreparationSquare cuts, mitres, holes, slots, notches or complex CNC shapesSeparates simple cutting from fabrication-ready preparation.
EnvironmentMoisture, chemicals, salt, UV, temperature, fire and electrical requirementsInfluences resin, surface veil, colour and fixings.

Cut, drill and CNC preparation

Supply can be arranged as full stock lengths, simple cut lengths or a drawing-led preparation package. CNC cutting is useful for repeated holes, slots, notches and complex shapes where controlled geometry and part identification reduce site work.

Send dimensioned drawings in a usable format and identify tolerances, datum faces, hole sizes, edge distances and whether cut edges require sealing or finishing.

Installation principles

  • Support and restrain profiles as shown by the project design
  • Use compatible corrosion-resistant fixings and backing details
  • Avoid uncontrolled holes, notches and sharp internal corners
  • Control GRP dust during cutting and drilling
  • Check completed dimensions before installation

Final structural verification and connection design remain the responsibility of the project designer.

Frequently asked questions

Which GRP box sections sizes and lengths are available?

Eight confirmed Business Central options cover 38 × 38 × 3.2 mm through to 101 × 101 × 6.35 mm. Listed options include 5 m or 6 m lengths and Grey, Yellow or Phenolic variants where confirmed.

Can GRP box sections be supplied cut to length?

Yes. Provide finished lengths, quantities, tolerances and clear part references. Include dimensioned drawings where holes, notches, slots or other preparation are required.

How should I select the correct section and support arrangement?

Confirm the section geometry, orientation, span, loading, restraint, connections and service environment. Product-specific data and the actual support condition should be checked by the project designer.

How are long profile lengths delivered?

Delivery treatment depends on length, quantity, destination and unloading access. See Delivery & Collection or send the schedule for confirmation.

How do I request trade or project pricing?

Use the project and bulk quote route with the section sizes, quantities, cut lengths and delivery requirements. Trade customers can also review Trade Accounts.

Choose the right buying route

Buy a confirmed standard option, send a cut list, request project pricing or ask the team for technical help.

GRP Express customer care centre

Continue your profile order

Compare the family, calculate stock lengths, plan connections or send a finished cutting schedule.

Available to buy: GRP Box Sections

Shop square and rectangular GRP box sections for frames, rails, guards and light structural fabrications.