Square Fiberglass Rod
Square fiberglass rod is a kind of fiberglass rod with glass fiber as the reinforcing material, which makes it have good transverse strength, and the resin is used as the matrix to make it have good corrosion resistance.
Accept Customized Sizes
A Choice of RAL Colors Available
- Customizable Options – Tailored size, resin type, and surface finish to meet your project needs.
- Factory-Direct Pricing – Save costs with direct production from our source factory.
- Free Sample Design – Get a sample or design validation before bulk production.
- Global Quality Supply – Reliable quality and on-time delivery worldwide.
Like fiberglass flat rods and fiberglass round rods, the square fiberglass rod is also a type of fiberglass rods. This type of fiberglass rod increases the artistry of the application. Therefore, it is more suitable for amateur projects. The difference in shape makes it fundamentally different from flat rod and round rod.
◆ Common size of Mach’s square fiberglass rod
Unit: mm
Model No. | SizeA B | Weight |
SSR25 | 25×25 | 1.23kg/m |
SSR32 | 32×32 | 1.95kg/m |
SSR38 | 38×38 | 2.75kg/m |
Mach’s can also fabricate custom sizes to fit your needs.
◆ Properties of square fiberglass rod
Property | Test Method | Unit | Numerical value |
Tensile Strength | ASTM D638 | Mpa | 210 |
Tensile modulus | ASTM D638 | Gpa | 22 |
Flexural strength | ASTM D790 | Mpa | 302 |
Flexural modulus | ASTM D790 | Gpa | 18.6 |
Compressive strength | ASTM D695 | Mpa | 258 |
Compression modulus | ASTM D695 | Gpa | 19.2 |
Interlaminar shear | ASTM D234 | Mpa | 24.5 |
Charpy impact strength | ISO 179 | KJ/m2 | 279 |
Bracol hardness | ASTM D2583 | – | 50 |
Elongation to break | ASTM D638 | % | 0.9 |
Water absorption(Max) | ASTM D570 | % | 0.57 |
Density | ASTM D792 | g/cm3 | 1.8 |
Thermal expansion coefficient | ASTM D696 | 10pC | 5.1 |
Flammability level (oxygen index) | UL94 | – | VO(32) |
Flammability retardation grade | ASTM E-84 | – | 25Max |
Flammability extinguishing | ASTM D635 | – | Self extinguishing |
Arc resistance(LW) | ASTM D495 | s | 120 |
Dielectric constant(PF) | ASTM D150 | C²/(N·M²) | 5 |
Dielectric strength(PF) | ASTM D149 | KV/mm | 8 |
Dielectric strength(LW) | ASTM D149 | KV/mm | 1.6 |
Surface resistivity | ASTM D257 | Ω | 10-10 |
Volume resistivity | ASTM D257 | Ω.cm | 10-10 |
Q1: How do you ensure the quality of FRP products?
A: All products are manufactured in our own factory under strict ISO-based quality control. We perform raw material testing, process monitoring, and final inspection to ensure every panel meets strength, durability, and corrosion-resistance requirements.
Q2: Where can FRP products be used?
FRP products are ideal for chemical plants, wastewater facilities, offshore platforms, walkways, platforms, stairs, and other areas that require corrosion resistance, lightweight structure, and long service life.
Q3: Do you provide after-sales support?
Yes. We provide clear documentation, installation guidelines (if needed), and technical support. If any quality issue is confirmed after delivery, we offer replacement, rework, or other agreed solutions.
Q4: Can you help with project-specific requirements?
Absolutely. Our team can suggest the right resin system, grating type, and surface finish for your application, and provide drawings or design assistance to ensure project success.




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