Pultruded FRP profiles & fiberglass structural shapes — complete product hub
F1 Composite supplies pultruded fiberglass structural shapes, custom profiles, gratings, deck panels, fixed ladders, handrail systems and FRP window frames. This hub maps each product family, its specification boundary and the drawing-led quotation path.
Key facts
Authored by Dr. Haifeng Gong, R&D Lead — Materials & Standards· Reviewed by Yifan Liu, Application Engineer· Last updated 2026-08-30
- Glass content
- 60–70% by weight
- Weight vs steel
- ~75% lighter
- Grades
- EN 13706 E17 / E23
- Tolerance
- ASTM D3917 · ±0.25 mm
- Corrosion
- Immune · zero coating
- Design life
- 50–100 years
- Standard shapes
- I-beam, channel, angle, SHS/RHS, tube, rod, flat bar
- Lead time
- Stock 2–4 wk · custom 4–8 wk
Pultruded FRP profiles: fiberglass structural shapes, continuously manufactured
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. As a category these are known interchangeably as pultruded profiles, composite pultruded profiles, or pultruded fiberglass profiles — F1 Composite is a direct-factory pultruded profiles manufacturer across all of them, and this catalog is referred to collectively as F1 pultruded profiles.
Compared to conventional materials, pultruded fiberglass reinforced polymer (also called GRP — glass reinforced polymer — or fiber 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.
F1 Composite organizes its pultruded FRP range into four branded product lines: F1‑STRUX (structural profiles), F1‑GRID (pultruded/molded gratings & structural deck panels), F1‑THERM (window frames & fenestration), and F1‑FORM (custom pultrusions). Product-specific pages and approved order documents define the applicable process, material, tooling and standard.
Pultruded fiberglass product families under one factory
Each family below is an F1 manufacturing or drawing-led quotation program. Click through for the published geometry, selection inputs and RFQ data; tooling status, material and production availability are confirmed where the product page says order release is required.
fiberglass I-beam
FRP I-Beam / Wide Flange
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
FRP Channel (C and U)
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.
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fiberglass angle
FRP Angle (L-profile)
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.
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fiberglass square tube
FRP Square & Rectangular 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.
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fiberglass tube
FRP Round 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.
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fiberglass flat bar
FRP 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.
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solid fiberglass sheet / FRP flat stock
Pultruded Fiberglass Sheets
Size range: 2–25 mm typical thickness · cut to part size
Solid flat stock for liners, covers, baffles and fabricated blanks, with smooth, gritted or embossed surfaces and order-specific resin selection.
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hollow and multi-cell FRP plate profiles
Pultruded Fiberglass Plate Profiles
Catalog scope: 19 records · 15 source schematics
Drawing-led hollow, multi-cell and edge-formed plate profiles with A/B/t1/t2 values and source IDs, separate from solid sheet and engineered deck systems.
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pultruded GFRP / CFRP / carbon-glass hybrid panels
Wind Turbine Blade Panels
Supply basis: Project-specific section and finished cut length
Wind-energy spar-cap and reinforcement laminates with grade-specific qualification, order-defined cut lengths and report-scoped GFP-WE20 fatigue data.
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GFRP rebar / fiberglass reinforcement bars
FRP Rebar
Size range: 4–40 mm supplier-published diameters
Sand-coated or fully threaded concrete reinforcement with a published GFRP/BFRP size matrix, plus project-specific CFRP options qualified to the bar schedule.
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fiberglass snow markers / reflective driveway stakes
Fiberglass Snow Markers & Driveway Stakes
Size range: 6.35 and 7.9 mm OD · 2–6 ft reference lengths
Solid or hollow pultruded fiberglass marker stakes configured by color, reflective-band layout, insertion tip and wholesale pack count.
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fiberglass plant stakes / FRP marker stakes
Fiberglass Stakes & Marker Rods
Size range: 5–19 mm public-market planning band
Solid pultruded plant, tree, vineyard, nursery and general marker stakes configured by diameter, cut length, color, end treatment, surface veil and pack count.
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FRP window frames / FRP window profiles
FRP Window Frames & Fenestration 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.
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fiberglass solar panel frames / PV mounting rails
FRP Solar Module Frames & Mounting
Size range: 30×30 mm — 100×50 mm catalog sections; custom module frames
Pultruded composite module-frame profiles, ground and floating PV support members, and lightweight rooftop rails with matched clamps and splice hardware.
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FRP sound wall / fiberglass noise barrier
FRP Sound Barrier Wall Panels
Size range: Project-specific wall height, panel length and post spacing
Reflective or absorptive outdoor noise-barrier systems with interlocking fiberglass panels, coordinated posts, sealed joints and drawing-led acoustic and structural release.
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custom fiberglass pultrusion services
Custom Pultruded Profiles
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.
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Also called: pultruded fiberglass grating
Pultruded FRP Grating
Size range: 25 – 76 mm manual-listed depths
Open T-bar and I-bar grating with manual-derived pedestrian, industrial, high-load and high-open series data plus M/J/T clips.
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structural fiberglass deck panels
Structural FRP Deck Panels
Size range: 12 cross-section references
Closed-profile deck sections with neutral A/B/t drawing values, distinct edge geometries and project drawing support.
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molded fiberglass grating
Molded FRP Grating
Size range: 13 – 65 mm catalog depths
Square mesh, mini mesh and rectangular molded panels with manual-verified sizes, nominal weights, open area and matched M/C/J 316SS clips.
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fiberglass fixed ladder / FRP access ladder
Fiberglass Fixed Ladder Systems
Size range: 500 mm outside width · 300 mm rung spacing
Fixed industrial access ladders with pultruded side rails, fluted rungs, bracket schedules, optional cage components and separate C/U rung-cover retrofits.
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fiberglass handrail / FRP guardrail system
Industrial FRP Handrail Systems
Size range: Square and round tube systems
Coordinated posts, top and middle rails, kick plates, splices, molded fittings and base options released against the project load and anchor basis.
Explore →Start from the structure you need to replace
Engineers often search by application before they know the profile geometry. These pages translate common use cases into resin systems, profile families, standards, and RFQ inputs.
FRP cable tray supports
Non-conductive pultruded channels, angles, and brackets for substations, tunnels, and corrosive cable routing.
View application →FRP cooling tower profiles
Vinyl ester beams, tubes, louvers, and access members for wet, chlorinated, and high-humidity cooling tower structures.
View application →FRP bridge deck panels
Closed-top deck planks, gratings, and support profiles for pedestrian bridges and lightweight deck replacement.
View application →FRP solar mounting profiles
UV-stable pultruded beams, channels, and posts for solar farms where weight, corrosion, and electrical isolation matter.
View application →FRP chemical plant platforms
Corrosion-proof beams, gratings, stair treads, and handrails for acid splash zones and process access platforms.
View application →Five resin systems — matched to environment and code
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. |
Pultruded FRP vs steel vs aluminum
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.
How F1 Composite compares to other pultrusion manufacturers
Direct-from-factory pricing eliminates regional distributor markup. All manufacturers listed produce to EN 13706 and ASTM D3917 standards.
| Manufacturer | Product range | Certification | Pricing structure | Sourcing model |
|---|---|---|---|---|
| F1 CompositeRecommended | Full range (I-beam, channel, angle, tube, flat bar, window frames, gratings, custom) | EN 13706 E17/E23 · ASTM D3917 · ISO 9001:2015 · PHI certified | Direct-from-factory · 30–50% below regional distributors | Direct from China · FOB/CIF/DDP · 370 pultrusion lines · 150,000 t/year capacity |
| Strongwell (EXTREN®) | I-beam, channel, angle, tube, flat bar, gratings, custom | EN 13706 · ASTM D3917 · ISO 9001 | Regional distributor markup · 40–60% above factory pricing | US-based · Regional distributors · No factory-direct purchasing |
| Fiberline Composites | I-beam, channel, angle, tube, flat bar, panels, custom | EN 13706 · DIBt certification · ISO 9001 | European distributor network · 30–50% above factory pricing | Denmark-based · Regional distributors · Limited custom capacity |
| Creative Pultrusions (SuperStrut®) | I-beam, channel, angle, tube, flat bar, gratings, custom | EN 13706 · ASTM D3917 · ISO 9001 | North American distributor markup · 35–55% above factory pricing | US-based · Regional distributors · Limited export focus |
| Bedford Reinforced Plastics | I-beam, channel, angle, tube, flat bar, gratings, custom | ASTM D3917 · ISO 9001 · UL listed | Regional distributor markup · 30–50% above factory pricing | US-based · Regional distributors · Limited international reach |
Key advantage: Factory-direct pricing and a complete product range
F1 Composite delivers the same EN 13706/ASTM D3917 compliance as Strongwell, Fiberline, and Creative Pultrusions — but at 30–50% lower landed cost by shipping direct from our FengDu manufacturing base (370 pultrusion lines, 150,000 t/year capacity). No distributor markup, full traceability, and 48-hour RFQ response.
EN 13706 E17 and E23 — what the grades mean
EN 13706-3 classifies pultruded structural profiles by their minimum full-section flexural modulus: grade E17 = 17 GPa and grade E23 = 23 GPa (the standard also requires the axial tensile modulus to meet the grade number). The grade is a floor, not the typical value — F1 Composite standard structural profiles are produced to E23, and high-fiber-content sections run stiffer than the 23 GPa minimum. Each property below is paired with the test method that produces it.
| Property | Test method | E17 | E23 |
|---|---|---|---|
| Full-section flexural modulus (grade definition) | EN ISO 14125 | ≥ 17 GPa | ≥ 23 GPa |
| Axial tensile modulus | EN ISO 527-4 | ≥ 17 GPa | ≥ 23 GPa |
| Axial tensile strength | EN ISO 527-4 | 170 MPa | 240 MPa |
| In-plane shear strength | EN ISO 14130 | 25 MPa | 30 MPa |
| Density | EN ISO 1183 | 1.9 g/cm³ | 1.9 g/cm³ |
| Glass content (by weight) | ISO 1172 | 60–65% | 65–70% |
| Barcol hardness (cure proxy) | ASTM D2583 | ≥ 40 | ≥ 40 |
Modulus rows are the EN 13706 grade definition; strength, density, glass content, and hardness are F1 characteristic values per the cited method. Per-size section properties (A, Ix, Sx, weight/m) are published on each shape datasheet, or compute them live in the FRP profile calculator.
Where pultruded fiberglass profiles replace steel and aluminum
Infrastructure
FRP bridge decks, pedestrian bridges, walkways, handrails, and cable trays in coastal and de-icing-salt environments.
View case studies →Construction
Curtain wall mullions, fenestration systems, façade support, rooftop platforms, and PV mounting in urban projects.
View case studies →Energy & Power
Transmission cross-arms, substation equipment, solar tracker frames, and non-conductive standoffs.
View case studies →Marine & Offshore
Gratings, dock decking, offshore platform handrails, and fender-system parts in saltwater splash zones.
View case studies →Industrial & Chemical
Chemical plant platforms, cooling towers, cable trays, and pipe supports for chlorine, caustic, and acid service.
View case studies →Vehicle & Rail
Bus/coach body panels, commercial truck floors, rail interior profiles, and EV battery tray structures.
View case studies →Technical resources
Pultruded FRP terms, defined
Pultrusion
A continuous process that pulls fiber reinforcement through a resin bath and a heated die to form a constant cross-section profile — a portmanteau of “pull” and “extrusion.”
E-glass roving
Continuous bundles of electrical-grade glass filaments that carry the longitudinal load in a pultruded profile.
Continuous strand mat (CSM)
A randomly-oriented glass mat layered between rovings to build transverse (cross-direction) strength.
Surfacing veil
A thin veil at the surface that creates a resin-rich, UV- and corrosion-resistant outer layer.
EN 13706 E17 / E23
European grades for pultruded structural profiles, defined by minimum full-section flexural modulus — 17 GPa (E17) and 23 GPa (E23).
ASTM D3917
The dimensional-tolerance standard for pultruded shapes; F1 Composite holds ±0.25 mm.
Vinyl ester resin
A corrosion-grade matrix for acid, alkali, chlorine, and marine service — a step above general-purpose isophthalic polyester.
Barcol hardness
A surface-indentation test (ASTM D2583) used as a quick proxy for adequate cure of a pultruded profile.
Full glossary: FRP & pultrusion terminology →
Datasheets & design data
Published mechanical data and design references for pultruded FRP profiles.
Pultruded FRP profiles — frequently asked questions
Short answers for specifying engineers, procurement managers, and contractors evaluating pultruded fiberglass profiles.
What are pultruded FRP 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.
How do pultruded FRP profiles compare with steel?
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.
Are pultruded FRP profiles certified to international standards?
Yes. F1 Composite supplies 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.
What CSI MasterFormat section covers pultruded FRP structural shapes?
In North American construction specifications, pultruded FRP structural shapes are specified under CSI MasterFormat Division 06 — most commonly Section 06 50 00 (Structural Plastics) and Section 06 51 00 (Structural Plastic Shapes and Plates). FRP gratings are typically specified under Section 06 74 13 (Fiberglass Reinforced Gratings). F1 Composite supports spec-section submittals with EN 13706 / ASTM D3917 compliance data, mechanical test reports (ASTM D638 / D790 / D695), and material test reports (MTRs) issued per production batch — the documentation package a PE stamping the spec expects to receive.
What is the typical lead time for pultruded FRP profiles?
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.
Is FRP more expensive than steel?
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.
Can FRP profiles be used for primary structural members?
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.
What is the minimum order quantity for custom FRP profiles?
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.
How does FRP compare to Strongwell, Fiberline, and Creative Pultrusions?
F1 Composite supplies to the same EN 13706 / ASTM D3917 specifications as Strongwell (EXTREN®), Fiberline Composites, and Creative Pultrusions (SuperStrut®). The differentiators are the scale of the FengDu manufacturing base it exports from (370 pultrusion lines, 150,000 t/year), direct-from-factory pricing without regional distributor markups, and custom tooling turnaround for export markets.
Where can I buy pultruded FRP profiles, and how do I source FRP pultruded profiles from China?
F1 Composite sells pultruded FRP profiles direct from the factory — no distributor markup — and exports to 30+ countries on FOB or DDP terms. Send your profile geometry (or a drawing), quantity, resin system, and destination port for a quote: stock standard sections ship in 2–4 weeks and custom-die profiles in 6–10 weeks. Buyers sourcing FRP pultruded profiles from China typically request EN 13706 / ASTM D3917 test data, a Barcol-hardness and glass-content report, and a pre-shipment inspection — all supplied by F1 Composite as standard.
Not sure which profile family fits your project?
Describe your application and the FRP Engineering Advisor will recommend the right product family, resin system, standards, and quote path.
Pre-filled question: “I'm browsing the F1 Composite pultruded FRP profiles hub. Help me decide between standard structural profiles, custom pultrusions, fenestration, and gratings based on my project — ask me what I'm building if you need more.”
Run bending, shear, and Timoshenko-corrected deflection on any standard shape to ASCE/SEI 74-23, CEN/TS 19101, GB 50608, or ASD — and find the section that replaces a steel or aluminum member at equal stiffness, then quote against your spec.
Looking up rather than computing? The FRP span tables publish the allowable uniform load for every standard fiberglass I-beam, channel, and tube over 1–6 m simple spans — EN 13706 E23 basis, deflection-checked. Once the section is fixed, the fiberglass pultruded profile price estimator turns it into a budgetary USD-per-meter range with quantity breaks.
Specify pultruded FRP profiles for your next project
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