FRP Square Tube Profiles, also known as Fiberglass Square Tubes or GRP Square Tubing, are structural components made from glass fiber reinforcements and thermosetting resins through an advanced pultrusion process. These FRP profiles offer a perfect balance of high strength, corrosion resistance, and light weight, making them an ideal alternative to traditional materials like steel, wood, or aluminum.
Designed for durability in harsh environments, FRP square tubes are commonly used in construction, chemical plants, wastewater treatment facilities, transportation, and electrical installations. Their consistent shape, dimensional stability, and non-conductive nature make them a preferred solution for modern industrial and infrastructure projects.
Features and Advantages
- Lightweight Yet Strong:
These FRP profiles are about 70% lighter than aluminum and significantly lighter than steel, yet maintain excellent tensile and flexural strength (up to 600 MPa), ensuring ease of transport and installation without sacrificing structural integrity. - Corrosion and Weather Resistant:
Ideal for aggressive environments, FRP square tubes resist chemical attacks, saltwater, UV radiation, and extreme temperatures ranging from -60°C to +80°C. - Electrical and Thermal Insulation:
Non-conductive and thermally insulating, these profiles are safe for use around electrical components and in high-temperature applications. - Dimensional Stability and Longevity:
With low thermal expansion and high heat deformation resistance, FRP profiles maintain their shape and performance over time, even in outdoor or fluctuating environments. - Easy to Process and Maintain:
These profiles can be cut, drilled, sanded, and painted using standard tools. Their smooth surface requires minimal maintenance and can be enhanced with UV-resistant coatings. - Customizable Appearance:
Available in various colors including red, yellow, blue, green, white, black, grey, or tailored to specific aesthetic needs.
Applications of FRP Square Tubes
- Structural Supports: Beams, crossbars, and columns in buildings, platforms, bridges.
- Safety Systems: Guardrails, handrails, ladder cages, and protective fencing.
- Industrial Frameworks: Equipment racks, walkways, cable trays, and machinery enclosures.
- Electrical Insulation: Non-conductive profiles for power distribution structures.
- Marine and Cooling Towers: Corrosion-proof framing for coastal and water-based environments.
Why Choose Our FRP Square Tube Profiles?
- Over 40 years of composite manufacturing experience
- CE-certified materials with traceable quality assurance
- Eco-friendly, energy-efficient production methods
- Professional technical support and fast delivery
- Online and offline ordering with cut-to-length service available
FRP Pultruded Square Tube Specifications
| Model | Length (mm)（L1） | Width (mm)(L2) | Thickness H1 (mm)(T) | Thickness H2 (mm) | Cross-Section Area (cm²) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 1 | 38 | 38 | 4 | – | 5.44 | 1.034 |
| 2 | 50 | 50 | 6 | – | 10.56 | 2.006 |
| 3 | 50 | 50 | 4 | – | 7.36 | 1.398 |
| 4 | 64 | 64 | 6.4 | – | 14.75 | 2.802 |
| 5 | 64 | 64 | 4 | – | 9.6 | 1.824 |
| 6 | 75 | 75 | 9.5 | – | 24.89 | 4.729 |
| 7 | 75 | 75 | 6 | – | 16.56 | 3.146 |
| 8 | 75 | 75 | 4.8 | – | 13.48 | 2.561 |
| 9 | 80 | 80 | 8 | – | 23.04 | 4.378 |
| 10 | 100 | 100 | 8 | – | 29.44 | 5.594 |
| 11 | 100 | 100 | 6.4 | – | 23.96 | 4.553 |