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Help CenterPultruded FRP Round Tube 100mm ID 8mm Wall Polyester Resin 1.8m Length 280kV Dielectric for Electrical Insulation
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As a professional FRP manufacturer, Hengshui Ruibin New Materials LLC proudly presents our pultruded FRP round tube with a 100mm inner diameter, 8mm wall thickness and 280kV dielectric strength. This product is engineered specifically for electrical insulation applications, combining structural integrity with outstanding electrical performance. Made with high-quality polyester resin and continuous E-glass fibers, this tube delivers consistent mechanical strength and dimensional stability, making it a trusted choice for electrical equipment manufacturers and industrial users.
Our pultrusion process ensures a homogeneous cross-section and precise tolerances, providing reliable performance in demanding environments. The tube measures 1.8 meters in length, offering convenient handling and installation for a wide range of applications such as busbar insulation, transformer components, insulation spacers, and high-voltage switchgear. With an excellent balance of strength, lightweight design, and inherent non-conductive properties, this FRP round tube helps improve safety and operational efficiency in electrical systems.
Product Features & Technical Specifications
- Superior Dielectric Strength: Rated at 280kV, this tube provides reliable electrical insulation for high-voltage equipment, reducing the risk of arcing and short circuits.
- High Mechanical Strength: The 8mm wall thickness offers excellent crush resistance and load-bearing capacity, ensuring long-term durability in structural applications.
- Lightweight & Easy to Install: Compared to metal or ceramic alternatives, FRP is significantly lighter, which simplifies handling and reduces installation costs.
- Corrosion & Weather Resistance: Polyester resin matrix protects against moisture, chemicals, and UV exposure, making the tube suitable for indoor and outdoor installations.
- Dimensional Stability: The pultrusion process ensures uniform wall thickness and consistent inner diameter of 100mm, allowing precise fit and assembly.
- Thermal Insulation: Low thermal conductivity helps maintain performance in temperature-sensitive environments.
- Non-Magnetic & Non-Conductive: Ideal for use near magnetic fields and live electrical parts where metal components are prohibited.
- Customizable Length & Color: While the standard length is 1.8m, custom lengths and surface colors are available upon request.
| Property | Value |
| Inner Diameter | 100 mm |
| Wall Thickness | 8 mm |
| Outer Diameter | 116 mm (approx.) |
| Length | 1.8 m |
| Dielectric Strength | 280 kV |
| Resin System | Polyester |
| Fiber Content | Continuous E-glass fiber (high-strength) |
| Surface Resistivity | Excellent insulation behavior |
| Operating Temperature Range | Typically -40°C to 130°C (depending on application) |
Application Areas
- Busbar insulation and support structures
- Transformer and switchgear insulation components
- Electrical equipment standoff insulators
- High-voltage cable protection tubes
- Inductor and magnet coil formers
- Insulating rods for electrical machinery
- Structural reinforcement in power distribution systems
Key Benefits for Your Business
Choosing our pultruded FRP round tube provides a cost-effective and reliable solution for high-voltage insulation. The combination of excellent dielectric properties and mechanical robustness ensures long service life with minimal maintenance. Its lightweight nature reduces the overall weight of your equipment, allowing for more compact and efficient designs. The smooth surface and uniform dimensions facilitate easy cutting, drilling, and machining to meet your specific requirements.
Furthermore, our factory in Hengshui, Hebei, China, is equipped with advanced pultrusion lines and strict quality control procedures. We have been manufacturing FRP products since 2019, and our team of over 100 employees ensures that every piece meets your expectations. With an annual export value of US$2.5 million to US$5 million, we serve customers across North America, South America, Europe, Southeast Asia, Africa, and other regions. Our products are well-received in both domestic and international markets.
We understand that reliability and safety are critical in electrical applications. That’s why we prioritize consistent quality and offer customization options such as different lengths, colors, and resin systems to match your project needs. Our sales team is ready to provide technical support, sample testing, and prompt shipment. Goods can be shipped from ports like Tianjin or Qingdao, ensuring efficient logistics to worldwide destinations.
For bulk orders or customization inquiries, please contact us. We are committed to delivering high-performance FRP solutions that add value to your products and help you stay competitive in the electrical industry.
FAQ
Q1: Can this FRP tube be used outdoors?
Yes, the polyester resin provides good resistance to moisture, UV, and general weathering. For prolonged outdoor use, UV-resistant gel coat or paint can be applied upon request.
Q2: Is the 280kV rating suitable for all high-voltage applications?
The 280kV dielectric strength rating indicates its excellent insulating capability, but the actual working voltage depends on the application design, distance, environmental factors, and safety standards. We recommend consulting your engineering team for proper design validation.
Q3: Can you provide custom lengths other than 1.8m?
Absolutely. Custom lengths are available as per your drawing or specification. Minimum order quantities may apply depending on the required size and quantity.
Q4: What is the maximum operating temperature?
The polyester resin system typically offers continuous service temperatures around 130°C for electrical applications. However, the exact limit depends on mechanical load and environmental conditions. For higher temperature needs, vinyl ester or epoxy resin tubes can be discussed.
Q5: Is the tube easy to cut or machine?
Yes, FRP tubes can be cut, drilled, and machined with standard carbide tools. It is recommended to use protective equipment to avoid inhaling dust particles.
Q6: Do you provide samples for quality testing?
Yes, we can provide small samples for evaluation after basic requirements are confirmed. Please contact our sales team to arrange sample shipment.
Q7: What is the lead time for bulk production?
Lead time varies based on quantity and custom specifications, but typically ranges from 7 to 20 days after confirmation. We work closely with our production team to ensure timely delivery.
Q8: How is the tube packaged for export?
The tubes are carefully packed with protective material, bundled, and placed in export-grade plywood cases or pallets to prevent damage during transit.
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