I-beamsWide-flange spanning members for walkways, bridges and platforms.76×38 to 305×305 mmView all sizes F1-STRUX· Standard profiles
Fiberglass structural shapes & sizes
Compare pultruded fiberglass I-beams, channels, angles, square and rectangular tubes, round tubes, flat bars and rods. Choose a family for the member's task, then compare dimensions, weights, drawings and material evidence. Catalog sections can be quoted as standard lengths or processed parts; a new cross-section starts from your drawing. Confirm the laminate, tolerances, quantity and production timing for the order.
FIG. 1 Standard sections
Fiberglass structural shapes: key facts
Fiberglass structural shapes are constant cross-section FRP members made by pultrusion, which pulls resin-wet glass reinforcement through a heated steel die. F1 Composite supplies them in 7 section families and 114 catalog sizes, made in FengDu New Material's pultrusion network in China.
- Section families
- I-beams and wide flanges, channels, angles, square and rectangular tubes, round tubes, flat bars and solid rods.
- Catalog sizes
- 114 sizes, from a Ø6 mm rod and a 12 × 3 mm flat bar up to 305 × 305 mm I-beams and 360 × 108 mm channels. Each family page lists dimensions, weights and section drawings.
- Weight per meter
- 0.05 kg/m for the Ø6 mm rod up to 16.8 kg/m for the 240 × 240 × 12 mm square tube.
- Supply forms
- 6 m standard lengths, a cut list, or processed parts with drawing-controlled cutting, holes and end details. A section the catalog does not cover is developed from your drawing, up to 600 × 300 mm.
- Material
- E-glass reinforcement in polyester, vinyl ester or polyurethane resin. Chemical resistance depends on the resin and the exposure, so confirm compatibility for the service conditions.
- Specification references
- EN 13706 grades E17 and E23, and ASTM D3917. They are specification references, not proof of blanket certification; confirm the report and scope that apply to the offered section.
- Full-section test evidence
- For the 40 GPa-class (E40) tier, two SGS reports record full-section averages of 40.8 and 41.5 GPa to EN 13706-2 Annex D. They are measured sample results, not design values for every catalog section. Review the reports and their scope.
- Availability
- Catalog dimensions identify standard section options, not live inventory. Confirm tooling, material, quantity and production timing in the quotation.
Browse fiberglass structural shapes by section family 7 families · 114 sizes
- I-beamsWide-flange spanning members for walkways, bridges and platforms.76×38 to 305×305 mmView all sizes
ChannelsOpen-section framing for cable supports and modular assemblies.38×13 to 360×108 mmView all sizes 
AnglesEqual-leg catalog angles for bracing and ledgers; unequal legs reviewed as custom sections.25×25 to 152×152 mmView all sizes 
Square and rectangular tubesClosed sections with flat mounting faces for columns, trusses and frames.25×25 to 240×240 mmView all sizes 
Round tubesFor handrails, guardrails and structural tubing.25 to 150 mm ODView all sizes 
Solid rodsSmooth solid sections for stakes, spacers and component blanks; specify end connections separately.Ø6 to Ø50 mmView all sizes 
Flat barsStiffeners, splice plates, wear strips and spacers.12×3 to 305×25 mmView all sizes 
Custom profilesA section the catalog does not cover, developed from your drawing.Up to 600 × 300 mmStart a custom profile
Choose the family by the member's task
These are starting points for selection. Capacity depends on the actual section, laminate, supports and connections; the family name does not establish a load rating.
| Member task | Start with | Bring to the design review |
|---|---|---|
| Span between supports | I-beams / Channels | Span, load direction, lateral restraint, deflection and bearing at supports. |
| Form a post or frame | Square or rectangular tubes | Installed orientation, unsupported length, bracing and access for connections. |
| Provide a circular grip or mast | Round tubes | Outside diameter, bore fit, wall, fittings and complete assembly loads. |
| Connect, brace or support an edge | Angles / Channels | Leg or flange dimensions, eccentric loads, fastener layout and bearing. |
| Make a strip, spacer or splice detail | Flat bars | Width, thickness, hole pattern and load transfer through the joint. |
| Use a smooth solid round section | Solid rods | Diameter, straightness, finished length and end attachment; not a rebar substitution. |
Define what arrives at your site
Standard cross-section
Select a catalog row and specify the resin, finish and quantity. Request 6 m standard lengths or a cut list. The quotation confirms tooling, material, tolerances and production timing; a listed size is not a stock commitment.
Processed parts
Keep the catalog cross-section and add drawing-controlled cutting, holes, end details or assembly interfaces. Confirm processing feasibility, inspection requirements and which fittings or installation work are included.
Custom cross-section
Send a section drawing, mating-part envelope and performance requirements. Review tooling, laminate, samples and acceptance criteria before production. Treat sample approval and repeat-order supply as separate stages.
Start a custom sectionCheck report scope before specifying a gradeSpecify members for a cooling tower
Check a section before you order
Filter the catalog, screen a beam or column, and plan the cut list and cost. Check each tool's stated data and assumptions against the offered section; preliminary results still need project review.
Profile finderFilter the standard sizes by shape, size, mass and stiffness, and compare up to four.Open the tool 
Profile calculatorBending, shear and deflection for a section, span and load, with the steel equivalent.Open the tool 
Column bucklingGlobal and local buckling and crushing of I-beams and tubes, with the lightest sizes that pass.Open the tool 
Span tablesAllowable uniform loads for the published I-beams, channels and tubes over 1 to 6 m spans.Open the tool 
Cut list optimizerNest piece lengths into 6 m or 12 m bars and see the bars to order, waste and weight.Open the tool 
Unit converterMetric and US units, and inch profile sizes matched to the closest catalog size.Open the tool 
Price estimatorPlanning prices per meter by section, resin, finish and volume.Open the tool 
Life-cycle costFRP against galvanized or painted steel over the life of the project, as present values.Open the tool
Standard FRP profiles — frequently asked questions
Quick answers for engineers and procurement teams comparing pultruded fiberglass structural shapes against steel and aluminum options.
Which FRP profile do I need for my application?
Start with the member's task: beams and channels for spanning supports; square or rectangular tubes for posts and frames; round tubes for circular grips and masts; angles for brackets and bracing; flat bars for strips and splice details. Compare the actual section, laminate, load direction, supports and connections before choosing a size. Smooth structural rods are separate from qualified concrete rebar. Send the span, loads and assembly drawing if the family is not yet clear.
Are F1 Composite standard profiles certified to EN 13706 and ASTM D3917?
Confirm the certificate holder, product or specimen, report number, method, date and scope. EN 13706 and ASTM D3917 are specification references, not proof of blanket certification. CE/UKCA documentation depends on the product, intended use and applicable assessment route.
Are catalog sections available from stock?
Catalog dimensions identify standard section options, not live inventory. Confirm tooling, material, quantity and production timing in the quotation.
Can FRP profiles be cut, drilled, and bolted on-site?
Pultruded FRP can be fabricated, but agree the cutting, drilling, dust-control and cut-edge treatment procedure for the proposed material. The connection drawing should establish hole positions, edge distances, bearing details and the tightening procedure. Specify which work is included in supply and which remains with the installer; use the design guides as a starting reference for project review.
How should I compare quotations for pultruded FRP structural shapes?
Compare the same section drawing, laminate, tolerances, finished lengths, quantity and processing scope. Separate tooling, samples, inspection documents, packing and delivery terms. A standard designation or matching outside size is not enough to establish equivalent performance; request evidence that applies to the offered configuration.
Is there a China-based alternative to Strongwell, Creative Pultrusions, Fiberline, or Exel?
Compare the proposed geometry, material grade, mechanical properties, tolerances and inspection evidence against the original specification. A similar section or standard reference does not establish interchangeability. Send the project requirements for a product-specific comparison.
Need engineering data or a quotation for standard profiles?
Send the member's task and section drawing, then identify whether you need plain lengths, processed parts or a custom cross-section. We reply within one business day; a formal quotation follows once the specification and delivery are reviewed.
- Section and member task
- Include a catalog reference or drawing, units, span, loads, support conditions and connections.
- Delivery scope
- List finished lengths, quantities, holes and end details. Identify supplied fittings and any fabrication or installation left to others.
- Material and acceptance
- Describe service exposure, required grade and tolerances. Agree which reports, sample checks and inspection documents apply to the offered product.
- Order and destination
- Give trial and repeat quantities, destination and target date. Confirm tooling, sampling, packing, production and shipping in the quotation.