Structural Profile - Quatrefoil Tube (Orthophthalic)
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Genius FRP
FRP structural shapes profile is made of glass fiber reinforced material, resin as adhesive, glass fiber cloth as a package reinforcement layer, through the thorough penetration, in the metal mold heating, molding, curing, drawing in the traction machine pulled A new type of composite material, with good physical properties, widely used in high strength, large span Situation.

Varieties | Size(mm) | Weight(kg/m) | Size(in) | Weight(lbs/in) |
Plum tube | D1*D2*T | D1*D2*T | ||
CT32A | 19*32*6.4 | 1.11 |
3/4" x 5/4" x 1/4" | 2.45 |
CT34A | 19*34*7.5 | 1.3 | 3/4" x 5/4" x 5/16" | 2.87 |
CT32B | 25*32*3.5 | 0.66 | 1" x 5/4" x 1/8" | 1.46 |
CT42 | 29*42*6.4 | 1.35 | 9/8" x 13/8" x 1/4" | 2.98 |
CT45A | 28*45*8.5 | 1.86 | 9/8" x 7/4" x 5/16" | 4.1 |
CT45B | 32*45*6.4 | 1.1 | 5/4" x 7/4" x 1/4" | 2.43 |
CT51 | 51*36*7 | 1.75 | 2" x 3/2" x 1/4" | 3.86 |
CT90B | 71*90*9.5 | 5.7 | 11/4" x 7/2" x 3/8" | 12.6 |
Markets

Architectural
Bridge & Highway
Chemical
Food & Beverage
Manufacturing
Metals & Mining
Microelectronics
Oil & Gsa
Pharmaceutical
Power
Pulp & Paper
Recreation
Telecommunications
Transportation
Water & Wastewater
The characteristics:
Corrosion Resistant
Low Maintenance
Fire Retardant
Low Install Cost
Heavy Metal Safe
Long Service Life
Electrically & Thermally Non Conductive
High Strength-to-Weight Ratio
Introduction of raw materials——Resin type
Code | Resin type | Flame retardant property | Recommended usage occasions |
VEFR-25 | Vinyl type | Oxygen index 28 or above | Acid, alkali and other corrosive harsh environment |
IFR-25 | Meta benzene | Oxygen index 28 or above | A VEFR type economy, and excellent, moderate acid alkali and solvent |
OFR-25 | Ortho type | Oxygen index 28 or above | General acid and alkali environment |
Application:
Genius© pultruded fiberglass structural shapes from Genius Composite Inc. are used in a wide range of applications and provide a unique combination of corrosion resistance, high strength, dimensional stability and light weight, along with thermal and electric non-conductivity. Durable Genius shapes provide years of low maintenance service in areas where steel, aluminum or wood components are traditionally specified. Today ,these shapes are often used in highly corrosive applications where stainless steel and other expensive components were once required.
Genius Shapes
Mechanical Properties | ASTM | Units | Value | Units | Value |
Tensile Stress, LW | D-638 | psi | 30000 | kgf/m² | 21092086 |
Tensile Stress, CW | D-638 | psi | 7000 | kgf/m² | 4921487 |
Tensile Modulus, LW | D-638 | 10^6psi | 2.5 | 10^6kgf/m² | 1758 |
Tensile Modulus, CW | D-638 | 10^6psi | 0.8 | 10^6kgf/m² | 562 |
Compressive Stress, LW | D-695 | psi | 30000 | kgf/m² | 21092086 |
Compressive Stress, CW | D-695 | psi | 15000 | kgf/m² | 10546043 |
Compressive Modulus, LW | D-695 | 10^6psi | 2.5 | 10^6kgf/m² | 1758 |
Compressive Modulus, CW | D-695 | 10^6psi | 1 | 10^6kgf/m² | 703 |
Flexural Stress, LW | D-790 | psi | 30000 | kgf/m² | 21092086 |
Flexural Stress, CW | D-790 | psi | 10000 | kgf/m² | 7030695 |
Flexural Modulus, LW | D-790 | 10^6psi | 1.8 | 10^6kgf/m² | 1266 |
Flexural Modulus, CW | D-790 | 10^6psi | 0.8 | 10^6kgf/m² | 562 |
Modulus of Elasticity | Full Section | 10^6psi | 2.8 | 10^6kgf/m² | 1969 |
Shear Modulus | --- | 10^6psi | 0.45 | 10^6kgf/m² | 316 |
Short Beam Shear | D-2344 | psi | 4500 | kgf/m² | 3163813 |
Punch Shear | D-732 | psi | 10000 | kgf/m² | 7030695 |
Notched Izod Impact,LW | D-256 | ft.-lbs./in. | 25 | kg/m | 3.46 |
Notched Izod Impact,CW | D-256 | ft.-lbs./in. | 4 | kg/m | 0.55 |
Excludes Round Rod and Square Bar
Physical Properties | ASTM | Units | Value |
Barcoal | D-495 | --- | 45 |
24 Hour Water Absorption | D-570 | %max | 0.45 |
Density | D-792 | lbs./in.³ | 0.062-0.07 |
Coefficient of Thermal Expansion,LW | D-696 | 10^-6in./in./℃ | 8 |
Flammability Properties | ASTM | Units | Value |
Tunnel test* | E-84 | Flame Spread | 25 max |
Flammability* | D-635 | --- | Non-Burning |
Electrical Properties | ASTM | Units | Value |
Arc Resistance,LW | D-495 | seconds | 120 |
Dielectric Strength,LW | D-149 | kv./in. | 35 |
Dielectric Strength,PF | D-149 | volts/mil | 200 |
Dielectric Constant,PF | D-150 | @60hz | 5 |
LW=Lengthwise, CW=Crosswise,PF=Perpendicular to Laminate Face
*Pertains to ISOFR and VEFR only
Application Scenarios
The quatrefoil tube structural profile combines strength with corrosion resistance, making it suitable for load-bearing supports and walkway frameworks in chemical platforms, wastewater treatment, power facilities, marine engineering and similar scenarios, with stable performance in humid, acid-base or salt-spray environments. For application-specific recommendations, please contact us for technical selection support.
Selection Guide
When selecting, consider load type, span, support spacing and environmental corrosion level, and confirm whether the cross-section dimensions (D1*D2*T) and wall thickness match installation requirements; weight parameters can also be referenced to estimate structural load. If you have questions about dimensions or mechanical properties, please contact us for detailed specifications and selection advice.
Product Advantages
This quatrefoil tube is pultruded from glass fiber reinforced resin, offering advantages such as lightweight and high strength, corrosion resistance, insulation and non-magnetic properties, and maintenance-free operation, along with easy installation that effectively reduces long-term use costs. To learn more about its technical features, please contact us to request samples and documentation.
Inquiry Guide
For detailed specifications, bulk pricing, delivery lead times or customization requirements, please contact us; we will provide professional advice and a quotation based on your application scenario.
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