Engineering Excellence in Pultruded Composites
We combine advanced pultrusion process control, rigorous material science, and decades of application engineering to deliver FRP profiles that outperform traditional materials in the most demanding environments.
Four Pillars of Our Technical Capability
Each discipline reinforces the others — precise process control enables superior material performance, validated by comprehensive testing, and made accessible through our know-how transfer programs.
Pultrusion Process
Continuous manufacturing of constant-cross-section FRP profiles through fiber reinforcement, resin impregnation, heated die forming, and precision pulling. Our lines deliver repeatable mechanical properties at industrial throughput.
FRP vs Traditional Materials
Fiber-reinforced polymers outperform steel, aluminum, timber, and concrete across weight, corrosion resistance, electrical insulation, and lifecycle cost. See the full property-by-property comparison.
Fiberglass Rebar vs Steel
Compare GFRP and steel reinforcement using FHWA, MnDOT, university-lab and ASTM evidence on tensile behavior, stiffness, corrosion, cracking and lifecycle cost.
Pultrusion Resin Systems
Polyester, vinyl ester, polyurethane, epoxy, or phenolic? The resin matrix decides corrosion, fire, and temperature behavior. Compare all five systems with an interactive selection matrix and typical property ranges.
Polyurethane Pultrusion Windows
GFRP-PU window frame technology: why polyurethane resin outperforms polyester on cross-fiber strength, thin walls, and deep-cold toughness — the chemistry behind our PHI-certified 90-series and the Qinling Antarctic windows.
Quality & Testing
ISO 9001 certified production with EN 13706 and ASTM compliance. Every profile undergoes tensile, flexural, impact, and Barcol hardness testing before shipment.
Know-How & Services
From consulting engagements to full turnkey pultrusion line installations, our engineering team transfers decades of composite manufacturing expertise to your operation.
FRP Profile Calculator
Calculate beam deflection, bending stress, and find equivalent FRP replacements for steel and aluminum sections. EN 13706 and ASTM compliant.
Window U-Value Calculator
Calculate whole-window thermal transmittance (Uw) per EN ISO 10077-1. Compare FRP, aluminum, PVC, and timber frames with double, triple, and quadruple glazing.
Product references
Deeper technical reading
FRP engineering — short technical answers
Concise, citation-ready responses to the questions our engineering team is asked most often. For deeper context, see the pultrusion process, FRP vs traditional materials, and quality testing pages.
What design code governs pultruded FRP structures?
In North America, ASCE/SEI 74-23 (Pre-Standard for LRFD of Pultruded FRP Structures) is the primary reference. In Europe, EN 13706-1/2/3 defines grades E17 and E23 and test methods. Additional references include the EUROCOMP Design Code and ACI 440 guidelines for FRP rebar.
What tolerance can pultrusion achieve?
Dimensional tolerance is typically ±0.25 mm on cross-section (EN 13706 / ASTM D3917), straightness 1.5 mm/m, and twist 2°/m. F1 Composite verifies every production run with SPC monitoring and dimensional inspection per ASTM D3917.
What fiber content is typical in pultruded FRP?
45–65% glass fiber by weight in general structural profiles, verified by burn-off testing per ASTM D2584. Unidirectional-dominant sections (e.g. flat bar, rod) can reach 70% glass for maximum stiffness-to-weight.
What is the typical elastic modulus of pultruded FRP?
Longitudinal elastic modulus is 17–28 GPa for E-glass/polyester pultruded profiles, compared with 200 GPa for steel and 69 GPa for aluminum. Because modulus is lower, deflection (L/360 limit) typically governs FRP design rather than strength.
How are FRP profiles connected on site?
Bolted connections (stainless steel A2/A4 or FRP bolts) are most common, with minimum edge distance 4× bolt diameter and torque M12 = 20–30 Nm. Adhesive bonding (methacrylate or epoxy) or hybrid bolted-bonded joints are used for load-critical connections. No welding — thermoset FRP cannot be welded or heated.
What fire performance can FRP achieve?
Standard polyester FRP is self-extinguishing (UL 94 V-0). With fire-retardant additives, FRP achieves ASTM E84 Class I surface burning. Phenolic-resin pultruded profiles achieve Class 1 surface spread of flame (BS 476 Part 7), low smoke, and low toxicity — qualified for rail interiors per EN 45545-2 and offshore applications.
Need technical guidance for your FRP project?
Send the dimensions, quantity, service environment, and destination. Engineering responds within one business day.