Sourcing Pultruded Products: What to Ask Your Fibreglass Suppliers
A beam, channel or tube may look simple on a drawing. A useful quote needs the load case, site conditions, fabrication details and delivery scope behind that shape.
Start with the process
Pultrusion pulls resin-impregnated reinforcement through a heated die to form a continuous, consistent cross-section. It suits straight lengths such as beams, channels, angles, flat bar, tube and rod. Moulding is useful when the part changes shape along its length or needs integrated features.
Both are composite products. The best starting point is the finished component and its duty. A standard profile may suit a frame or support, while a purpose-built cover or enclosure may need a moulded design. Fibre Composites sources, cuts and fabricates grating and pultruded profiles. It does not manufacture the pultruded lengths themselves.
Give the supplier a complete load case
Send a drawing or sketch with the section shape, length, quantity and tolerances. Identify the size, direction, location and duration of the loads. For a walkway or platform, include the clear span and support layout. For a bracket or frame, show point loads, vibration or impact and all fixing positions.
Ask for product-specific structural data for the proposed section and grade. FRP properties depend on fibre orientation and profile design; a like-for-like steel substitution should not be assumed. The project engineer should check capacity, deflection, connections and any nominated design standard against the supplied data.
Also define holes, cut-outs, clips, brackets, bonding and other fabrication. A structurally suitable profile can still delay a project if its fixing detail has not been resolved.
Describe the service environment precisely
State whether the part will be outdoors, coastal, continuously wet, subject to wash-down or near a chemical process. Include ultraviolet exposure, operating temperature, electrical isolation needs and any specified fire performance.
For chemical exposure, provide chemical names, concentrations, temperatures and whether contact is continuous or occasional. Ask for the resin and surface finish of the proposed profile, plus the manufacturer’s compatibility information for that duty. A broad description such as “corrosion resistant” does not verify suitability for every chemical.
Fibre Composites lists vinyl ester and fire-rated options for some supplied profiles and grating. Confirm availability and fitness for the exact section and order.
Check standard sizes before requesting a custom section
Fibre Composites lists beams, channels, angles, flat bar, tubes, rods, and moulded or pultruded grating among its sourced products. Ask which dimensions, grades, finishes and stock lengths are available for your project.
If the drawing calls for an unusual cross-section, ask whether an existing profile can be cut and assembled to suit. A genuinely new cross-section may require a new die and a different sourcing arrangement. The supplier should explain the feasibility, minimum practical quantity and timing for the specific request.
Resolve cutting, drilling and connection details
A stock section is only the starting material. Show finished lengths, cut angles, hole positions, edge distances and the location of any joints on the drawing. Identify whether each component arrives as a loose length, a kit or a fabricated assembly. If the supplier will cut or drill the profile, ask what dimensional tolerances it can hold and how cut faces and holes will be finished for the intended exposure.
Connections often govern whether a proposed profile will work in service. Give the supplier the bracket, bolt, clip or bonded-joint details and the substrate to which the FRP connects. Ask for the product data or project design basis used to check those connections. The engineer should review local loads, deflection, movement and support spacing before the fabrication drawing is released.
If access for installation is tight, supply handling limits and the sequence in which assemblies will be installed. Confirm whether trial fitting, packaging by installation area or a clearly labelled component schedule is included in the quote. Those details can avoid cutting a structurally suitable section twice on site.
Build a realistic sourcing programme
Ask which requested shapes and grades are already available and which must be sourced for the order. Confirm when the section and resin grade can be selected, when drawings must be approved, and when fabrication can begin. A request for a new die, uncommon finish or project-specific test may change the programme, so ask for those dependencies to be identified rather than relying on a single delivery date.
Set a date for resolving substitutions. If a specified profile is unavailable, ask the supplier to provide the alternative section data, dimensions, resin and connection implications before your engineer accepts it. Record the approval and the final ordered schedule so procurement, fabrication and site crews work from the same revision.
Choose grating on the same basis
A grating package needs more than a panel size. State the opening size, span between supports, traffic type, concentrated and distributed loads, required surface grip, drainage and any cut-outs. Ask whether a moulded or pultruded grating panel is proposed and why it suits the support arrangement.
Provide edge details, clips and fixing locations in the drawing. If the panels will be lifted for maintenance, ask about handling and access. A supplier can then quote both the panel and the work needed to make it install-ready.
Request a clear technical submittal
Before approving a structural product, ask for a section schedule linked to the drawing, technical data for the proposed grade, and the basis for any environmental or fire-performance claim. Check whether the data applies to the complete profile, a coupon sample or a different product family.
Record any substitution from the requested section or resin. The designer should confirm that a proposed alternative still works with the support, connection and service conditions. This is especially important when several fibreglass suppliers are quoting products from different manufacturers.
Clarify what the quote includes
- Is the product supplied as sourced lengths, cut to size or assembled with fittings?
- Which section grade, tolerances, finish and supporting data are included?
- Will the supplier provide material identification or traceability required by the project?
- Are packaging, freight, delivery and site installation included?
- What drives the lead time: sourced profile, fabrication, approvals or transport?
A quoted price is only useful when the scope and assumptions are clear. Ask suppliers to identify exclusions and any engineering or site information still needed before the section can be selected.
Put the whole enquiry in one email
Attach the drawing, quantity, delivery location and target date. Add the load case, support and fixing details, exposure conditions, required finish and project specification. Mark which dimensions are fixed and which can change.
If comparing options, ask each fibreglass supplier to identify the proposed section and grade, its technical data, fabrication scope and exclusions. That lets your procurement team compare the same job rather than two prices for a vaguely described length of FRP.
Include a contact who can answer technical questions and note the point at which the design must be frozen. If delivery is staged, show which lengths or fabricated assemblies are needed first. This lets the supplier flag any information gap early and discuss options before a drawing change affects ordering. It also gives your team a written record of the quoted assumptions to check against the final purchase order.
Frequently Asked Questions
Do Fibre Composites manufacture pultruded profiles?
No. The company sources pultruded profiles and FRP grating, then cuts and fabricates them to suit a project. Its custom moulded composite parts are manufactured in house.
What profile shapes can I ask about?
The published range includes beam, channel, angle, flat bar, tube and rod, plus moulded and pultruded grating. Confirm size and grade availability for your order.
Can I choose a profile from dimensions alone?
Dimensions are only one part of the specification. Load, span, fixings, deflection and environmental exposure need to be checked using the actual product data.
Have a profile drawing?
Send the duty, dimensions and delivery scope to the Fibre Composites team so they can discuss a sourced and fabricated package for your project.
