F1 Composite manufactures the full family of pultruded fiberglass reinforced polymer profiles: structural shapes (I-beam, channel, angle, tube, flat bar, rod), FRP window frames and window profiles (65 / 70 / 80 / 90 / 140-series fenestration), gratings and deck panels, and custom cross-sections up to 600×300 mm. Made to EN 13706 and ASTM D3917 across 5 production bases and 370 pultrusion lines.
Pultrusion is a continuous manufacturing process in which E-glass roving, continuous strand mat, and surfacing veil are pulled through a resin bath and then through a heated steel die. The resin cures inside the die, producing a constant cross-section pultruded fiberglass profile with 60–70% glass content by weight. Throughput is typically 0.3–1.5 m/min, and profiles can be produced in any length — standard packaging is 6 m or 12 m.
Compared to conventional materials, pultruded fiberglass reinforced polymer (also called GRP — glass reinforced polymer — or fibre reinforced plastic) is approximately 75% lighter than steel, corrosion-immune, electrically non-conductive, and has thermal conductivity 170× lower than steel. Pultruded FRP is used in bridges, walkways, cooling towers, offshore platforms, chemical plants, rail, solar farms, and passive-house window systems worldwide.
Every geometry listed below is produced in-house at F1 Composite — no trading, no relabeling. Click through to each product for the full size chart, mechanical data, FAQ, and ready-to-quote specifications.
fiberglass I-beam
Size range: 76×38 mm — 305×305 mm
Primary structural beams for walkways, platforms, and short-span bridges. Up to 75% lighter than a comparable A36 steel wide flange.
Explore →
fiberglass channel
Size range: 38×13 mm — 305×89 mm
Open-section framing for cable trays, stringers, modular skids, and stair stringers. Easy on-site fabrication with carbide tooling.
Explore →
fiberglass angle
Size range: 25×25 mm — 152×152 mm
Equal and unequal-leg angles for stiffeners, bracing, ledger supports, and frame connectors. Isophthalic polyester or vinyl ester resin.
Explore →
fiberglass square tube
Size range: 25×25 mm — 240×240 mm
Superior torsional rigidity for columns, trusses, and free-standing frames. Also used for guardrails and solar racking posts.
Explore →
fiberglass tube
Size range: 25 mm — 150 mm OD
Circular hollow sections for handrails, antenna masts, insulating stand-offs, and fluid-conveying applications with smooth interior bore.
Explore →
fiberglass flat bar
Size range: 12×3 mm — 305×25 mm
Solid rectangular sections for stiffeners, splice plates, wear strips. Unidirectional architecture up to 70% glass for high-modulus applications.
Explore →
FRP window frames / FRP window profiles
Size range: 65 / 70 / 80 / 90 / 140-series frame depths
Pultruded fiberglass window frames and FRP window profiles — frame, sash, mullion, transom, glazing bead. Whole-window U-values down to 0.78 W/m²·K. PHI passive house certified. Direct replacement for aluminum and PVC window systems.
Explore →
custom fiberglass pultrusion services
Size range: Up to 600×300 mm cross-section
Bespoke dies for EV battery trays, solar mounting, rail interiors, architectural trim, and structural replacements. 6–10 week turnaround.
Explore →
fiberglass grating and decking
Size range: 25 – 100 mm thickness
Molded and pultruded gratings, solid-top cover plates, and structural FRP deck panels for chemical plants, offshore platforms, pedestrian bridges, and vehicular access decks.
Explore →All pultruded FRP profiles in the F1 Composite range can be produced with the resin system required for your environment. Resin selection drives chemical resistance, fire performance, and long-term stiffness.
| Resin system | Typical use | Notes |
|---|---|---|
| Isophthalic polyester | General structural (default) | Best cost / performance balance. ASTM E84 Class II flame spread available. |
| Vinyl ester | Marine, chemical, wastewater | Superior resistance to hydrolysis, chlorides, and osmotic blistering. |
| Polyurethane (PU) | High-toughness, fast-cure | 3–5× flexural toughness of polyester. Used in rail interiors and EV trays. |
| Phenolic | Fire-critical (BS 476 / EN 45545-2) | Low smoke, low toxicity, Class 1 surface spread of flame. |
| Epoxy | High mechanical performance | Used when tensile or fatigue properties need to approach steel equivalents. |
Typical property bands for E-glass/polyester pultruded profiles compared with A36 carbon steel and 6061-T6 aluminum. Actual values vary by resin system, fiber architecture, and cross-section. Use this table as a first-pass material selection reference.
| Property | Pultruded FRP | Carbon steel | Aluminum |
|---|---|---|---|
| Density (g/cm³) | 1.8 – 2.1 | 7.85 | 2.70 |
| Tensile strength (MPa) | 240 – 400 | 400 (A36) | 240 (6061-T6) |
| Elastic modulus (GPa) | 17 – 28 | 200 | 69 |
| Thermal conductivity (W/m·K) | 0.3 | ≈50 | ≈160 |
| Corrosion | Immune | Requires galvanizing / painting | Galvanic & chloride pitting |
| Electrical conductivity | Non-conductive | Conductive | Conductive |
| Typical service life | 50–100 years (no maintenance) | 25–40 years (re-coat every 5–7 yrs) | 25–50 years |
For a detailed comparison including cost analysis and lifecycle economics, see FRP vs traditional materials.
FRP bridge decks, pedestrian bridges, walkways, handrails, and cable trays in coastal and de-icing-salt environments.
View case studies →Curtain wall mullions, fenestration systems, façade support, rooftop platforms, and PV mounting in urban projects.
View case studies →Transmission cross-arms, substation equipment, solar tracker frames, and non-conductive standoffs.
View case studies →Gratings, dock decking, offshore platform handrails, and fender-system parts in saltwater splash zones.
View case studies →Chemical plant platforms, cooling towers, cable trays, and pipe supports for chlorine, caustic, and acid service.
View case studies →Bus/coach body panels, commercial truck floors, rail interior profiles, and EV battery tray structures.
View case studies →Short answers for specifying engineers, procurement managers, and contractors evaluating pultruded fiberglass profiles.
Pultruded FRP (fiber-reinforced polymer) profiles are continuous fiberglass structural shapes produced by pulling reinforcing fibers through a resin bath and a heated steel die. The result is a constant cross-section profile — I-beams, channels, angles, tubes, rods — with 60–70% glass fiber content by weight, high strength-to-weight ratio, and full corrosion resistance.
Pultruded FRP is approximately 75% lighter than steel (density 1.9 vs 7.85 g/cm³), has comparable tensile strength (240–400 MPa vs 400 MPa for A36), but lower elastic modulus (~25 GPa vs 200 GPa). FRP does not corrode, does not conduct electricity, and has thermal conductivity ~170× lower than steel. Stiffness or deflection usually governs FRP design rather than strength.
Yes. F1 Composite manufactures to EN 13706-1/2/3 (European pultruded profile standard, E17 and E23 grades) and ASTM D3917 (dimensional tolerances). Mechanical testing follows ASTM D638 (tensile), D790 (flexural), and D695 (compression). The company holds ISO 9001:2015, and fire-rated products are certified to BS 476, ASTM E84, and EN 45545-2.
Stock standard profiles: 2–4 weeks. Custom profiles using existing tooling: 4–6 weeks. Custom profiles requiring new dies: 6–10 weeks total (3–6 weeks for die manufacturing + trial + production). Fenestration system projects: 6–12 weeks depending on volume.
On a per-meter basis, pultruded FRP costs 50–100% more than carbon steel. However, installed cost is often comparable or lower due to 40–60% lower freight, no hot-work permits, 20–40% less labor, and no cranes for most members. Over a 30-year life in corrosive environments, FRP lifecycle cost (TCO) is 20–40% lower than steel because FRP needs no recoating.
Yes. FRP is widely used for primary structural members in walkways, pedestrian bridges, platforms, cooling tower framing, solar mounting, and cable tray support. Design follows ASCE/SEI 74-23 LRFD Pre-Standard for Pultruded FRP Structures or EN 13706. Local and global buckling checks are essential because of the lower modulus.
F1 Composite's minimum order quantity for custom pultruded profiles is 500 linear meters for the first production run; repeat orders start from 200 meters. Stock standard profiles have no MOQ.
F1 Composite manufactures to the same EN 13706 / ASTM D3917 specifications as Strongwell (EXTREN®), Fiberline Composites, and Creative Pultrusions (SuperStrut®). The differentiators are scale (370 pultrusion lines, 150,000 t/year), direct-from-factory pricing without regional distributor markups, and custom tooling turnaround for export markets.
Our engineering team is ready to help you find the right FRP solution. Get in touch for technical consultation or a detailed quotation.