Product overview
A fiberglass 90 degree angle is a pultruded FRP angle whose defining feature is a true 90° corner and consistent leg thickness. It’s manufactured by pulling aligned glass rovings and mats through a resin bath and a heated die, producing repeatable geometry and tight corner radii ideal for architectural trim, corner guards, electrical enclosures and precision fixtures. Available in polyester, vinyl-ester or epoxy resin systems to match environmental and fire-performance requirements.
What makes the 90 degree angle different
What makes the 90 degree angle differentFactory-sharp 90° corner — tighter corner radius than many commodity angles, reducing gaps and improving aesthetics for visible installations.
Consistent leg flatness & dimensional tolerance — important for mounting flanges and mating to metal or panels.
Surface finishes tuned for application — UV-stabilized gel-coat for external trim, smooth finish for painted surfaces, or rougher finish for adhesive bonding.
Designed for both cosmetic and light structural loads — choose wall/leg thickness according to load tables or supplier D-sheets.
Key features & buyer benefits
Precise geometry — reduces on-site fitting and rework for architectural projects.
Corrosion & chemical resistance — long life in marine, wastewater, and chemical environments; lower life-cycle cost vs uncoated steel.
Non-conductive & non-magnetic — safe for electrical substations, telecom enclosures and sensor frames.
Lightweight — easier handling and lower shipping/support costs than metal alternatives.
Low maintenance & paintable finishes — factory coatings are available; many profiles accept secondary painting.
Technical specifications & design guidance
Note: Values below are industry-typical reference ranges. For project design always obtain the supplier’s Product Data Sheet (PDS) and, for critical structures, request load/span tables or test coupons.
Materials & standards
Manufacturing: Pultruded FRP (continuous glass rovings + stitched mat + thermoset resin).
Common resin systems: Polyester (economy), Vinyl-ester (improved chemical/heat resistance), Epoxy (highest performance / adhesive bonding).
Typical test standards referenced: ASTM D638 (tensile), ASTM D790 (flexural), ASTM D695 (compressive) — verify PDS.
Representative mechanical ranges (pultruded FRP typical reference values)
Tensile strength (longitudinal): ~170–290 MPa (25–42 ksi) depending on fiber/resin and laminate.
Longitudinal modulus: ~13–25 GPa typical for many structural pultrusions (higher for heavy-roving constructions).
Density: ~1.7–2.0 g/cm³ (substantially lighter than steel of same volume).
Coefficient of thermal expansion (approx.): higher than steel — permit expansion joints on long runs.
Common stock sizes & lengths
| Leg × Leg (imperial) | Wall / thickness | Typical stocked length |
|---|---|---|
| 1″ × 1″ | 1/8″ (≈3.0 mm) | 8–20 ft (96″–240″) — 20 ft common for pultrusions. |
| 1½” × 1½” | 3/16″ (≈4.8 mm) | 8–20 ft. |
| 2″ × 2″ | 1/4″ (≈6.35 mm) | 8–20 ft. |
| 3″ × 3″ | 3/8″ (≈9.5 mm) | 8–20 ft. |
| Metric examples | 20×20×3 mm, 25×25×3 mm, 40×40×4 mm | 2.5–6 m stock lengths common. |
We also stock FR/UV grades (gray/green) and provide cut-to-length, pre-drilling and secondary fabrication.
Product Data & Technical Documents
Download datasheets, chemical resistance charts, test reports and cutting templates.
Typical applications
Architectural trim & corner guards — where a visually clean 90° edge is required, indoors or outdoors.
Electrical & telecom enclosures — non-conductive internal brackets and mounting angles.
Marine & coastal fixtures — light support brackets and trim exposed to salt spray.
Chemical plant interior fittings — low-maintenance corner angles in corrosive zones (with suitable resin selection).
OEM housings & machine guards — where precise right angles speed assembly and reduce fastener offsets.
Advantages (why choose fiberglass 90 degree angle)
True 90° fit reduces field shimming and cutting time.
Better lifecycle in corrosive settings compared with painted steel.
Non-conductive and non-magnetic for safer installations near live equipment.
Lower handling costs due to lighter weight than metal alternatives.
Multiple finish options (UV-stable gel-coat, paintable, adhesive-ready) for architectural flexibility.
Comparison table: Fiberglass 90 Degree Angle vs Steel / Aluminum / Standard FRP angle
| Property | FRP 90 Degree Angle (this product) | Carbon Steel Angle | Aluminum Angle | Standard FRP Angle (commodity) |
|---|---|---|---|---|
| True 90° corner precision | High (factory-made sharp corners) | Varies (may need machining) | Varies (extrusions often good) | Moderate (some have larger corner radii) |
| Corrosion resistance | Excellent (vinyl-ester/epoxy options) | Poor (requires coatings) | Good (but galvanic risk) | Good (but may have lower fiber volume) |
| Electrical insulation | Non-conductive. | Conductive | Conductive | Non-conductive. |
| Weight | Low | High | Medium | Low |
| Cost (material) | Moderate; lifecycle often favorable in corrosive environments. | Lower initial, higher lifecycle | Higher than FRP | Lower initial than reinforced FRP |
Fabrication & installation notes
Cutting: Carbide or diamond blades recommended; cut as straight as possible to preserve corner geometry and avoid delamination. Use dust control and PPE.
Fastening: Use stainless steel or non-metallic fasteners; consider isolators to prevent galvanic contact with dissimilar metals. Pre-drill clearance holes to prevent cracking.
Joining/Sealing: Use structural adhesives or mechanical fasteners; for weather-tight joints use compatible sealants and profile edge treatments.
Thermal movement: Account for FRP’s higher thermal expansion vs steel on long runs—provide expansion allowances.
E-A-T
Expertise: Pultrusion technology and product selection should reference supplier PDS, laminate schedules and ASTM testing (D638, D790). Request span/load tables for load-bearing uses.
Authoritativeness: We can supply manufacturer datasheets, ISO/QC certificates and mill test reports on request to include in bid packages.
Trustworthiness: For critical installations ask for lot traceability, third-party coupon testing and documented installation guidelines. We recommend a sample order for field verification prior to full deployment.
FAQ
Q1: Is a fiberglass 90 degree angle the same as a generic fiberglass angle?
A: No—this product is manufactured for a true factory 90° corner and tighter tolerances, making it better for visible trim, enclosures and precision mounting than many commodity angles.
Q2: Can it bear structural loads like a steel angle?
A: FRP angles are lighter and have different stiffness and strength behavior. For light to moderate loads they are suitable; for heavy structural loads consult supplier load/span tables and a structural engineer.
Q3: What lengths and finishes are available?
A: Common stock lengths are 8–20 ft (96″–240″); finishes include UV-stable gel-coat, smooth paintable surfaces, and adhesive-ready finishes. Custom cut lengths and pre-drilling are widely offered.
Q4: Will FRP angles corrode in marine environments?
A: Properly specified resin systems (vinyl-ester or epoxy) resist saltwater corrosion far better than uncoated steel. Verify compatibility with the supplier’s chemical resistance data.
Q5: How do I specify when requesting a quote?
A: Provide leg dimensions (leg × leg × wall), length(s), resin preference (polyester / vinyl-ester / epoxy), quantity, and any secondary services (cutting, drilling, inserts). You’ll receive PDS, weight/ft and lead time in the RFQ response.
