Fiberglass Square Tube
Made of high-strength FRP, it features corrosion resistance, light weight, high rigidity, anti-aging and easy installation, not easy to rust or deform. Widely used in chemical, construction, power and marine industries as support structures, frames and handrails.
| Width | 16mm~200mm |
|---|---|
| Height | 16mm~200mm |
| Thickness | 2.5mm~8mm |
| Leg width | 3mm~8mm |
| カラー | White, black, green, blue, red, etc. |
Customizable Options
Tailored size, color, and surface finish to meet your project needs.
Factory-Direct Pricing
Save costs with direct production from our source factory.
1. Fiberglass Square Tube Product Description
Fiberglass Square Tube (FRP Square Tube) is a high-performance pultruded profile built for heavy-duty industrial use. It stands out as a lightweight, corrosion-resistant alternative to steel, aluminum and wood. In addition, our FRP square tubes offer excellent strength, electrical insulation and long-term durability. As a result, they are widely used in construction, marine, photovoltaic and chemical processing projects across the globe.



2. Key Advantages of Our FRP Square Tubes
| Core Advantage | Detailed Description |
|---|---|
| Ultra-High Strength-to-Weight Ratio | Our fiberglass square tubes combine exceptional structural strength with a lightweight design. This unique combination effectively reduces installation labor and structural load, while still maintaining load-bearing capacity comparable to metal alternatives. |
| Superior Corrosion & Chemical Resistance | Resistant to acids, alkalis, saltwater, and UV radiation, FRP square tubes perform reliably in harsh industrial, marine, and outdoor environments, eliminating rust, rot, and degradation issues common with metal tubes. |
| Excellent Electrical & Thermal Insulation | Non-conductive and thermally stable, these fiberglass square tubes are perfect for electrical, photovoltaic, and high-temperature applications, ensuring safety and performance in sensitive environments. |
| Low Maintenance & Long Service Life | With minimal upkeep requirements, our FRP square tubes offer a 20+ year service life, significantly reducing lifecycle costs compared to traditional metal square tubes. |
| Customizable Design & Easy Fabrication | Available in a full range of sizes, wall thicknesses, and colors, our fiberglass square tubes can be cut, drilled, and machined on-site for seamless integration into any project. |
3. Wide Range of Industrial Applications
| Application Field | Application Details |
|---|---|
| Construction & Infrastructure | Used for structural supports, framework, handrails, and building components in bridges, commercial buildings, and municipal engineering, replacing steel to reduce weight and corrosion risks. |
| Marine & Offshore | Ideal for boat frames, dock structures, and offshore platform components, withstanding saltwater corrosion and harsh marine environments. |
| Photovoltaic & Renewable Energy | Perfect for solar panel mounting systems, support frames, and racking structures, leveraging non-conductive properties for safe energy generation. |
| Chemical & Processing Plants | Used for equipment frames, piping supports, and structural components in corrosive chemical environments, resisting chemical spills and fumes. |
| Electrical & Telecommunications | Serving as insulated supports, cable management, and structural components for electrical infrastructure, ensuring electrical safety. |



4. Technical Specifications (Customizable)
| パラメータ | Specification |
|---|---|
| 素材 | High-quality unsaturated polyester resin / vinyl ester resin reinforced with E-glass fibers |
| Production Process | Continuous pultrusion for consistent quality and performance |
| Size Range | Custom square sizes from 10mm × 10mm to 200mm × 200mm, other sizes available on request |
| Wall Thickness | 2mm to 15mm, tailored to load-bearing requirements |
| Length Options | Standard 6m / 12m, or custom cut lengths |
| Color Options | Standard red, yellow, green, orange, or custom RAL colors |
| 表面仕上げ | Smooth, glossy, or textured for anti-slip applications |
| Mechanical Properties | High tensile strength, flexural strength, and impact resistance |
| Certifications | ISO 9001, CE, and other industry-specific certifications available |
5. Why Choose Our FRP Square Tubes?
As a leading manufacturer of pultruded fiberglass profiles, we deliver high-quality FRP square tubes that meet the strictest industry standards. And whether you need standard sizes or custom-engineered solutions for your project, our team provides expert technical support, fast delivery, and competitive pricing.
Contact us today to discuss your fiberglass square tube requirements and get a free quote!



Production Line
MingChi has a professional FRP pipe production workshop with advanced pultrusion equipment, full automatic production, strict quality inspection in each process, ensuring accurate size and stable unified performance of each square tube.

01- Are you Trading Company or Manufacturing Factory?
We are both manufacturer trading and company. We have our own factory and we have better service ofoverseas customers. Welcome to send your inquiry!
02- I am interested in your products, could I get sample for free?
We can supply a few pieces FREE samples if we have some in stock, and you only need to pay the freight cost by yourself. Welcome to send your inquiry for FREE samples!
03- How about the Delivery time?
10-15days after receiving the deposit based on the MOQ. Normally, 30-35days to finish the order for a 20ft container. Welcome to ask for the detailed delivery time according to your order quantity!
04- How can you guarantee the product quality?
Our whole production lines and products have been certificated by IS09001:2015, and it’s been followed strictly. We also have the professional QC team, and each our package worker will be in charge of the final inspection according to the QC instruction before packing.
05- What is about the payment terms.
Basically, the payment terms areT/T,L/C at sight. Western Union, Paypal, Moneygram, Alipay Credit card are acceptableforsample order.
06- Can you do OEM for me?
We accept all OEM orders,just contact us and give me your design,we will offer you a reasonable price ASAP.
Industry Application
Fiberglass (FRP) is a versatile, corrosion-resistant engineered material, powering critical applications across bridge infrastructure, industrial safety, chemical processing, marine terminals, municipal engineering, and solar energy. With unmatched durability, low maintenance, and high strength, FRP solutions deliver long-lasting performance for demanding industrial environments worldwide.







