Epoxy fiberglass tubes are manufactured using alkali-free fiberglass and epoxy resin through impregnation and curing processes. These materials are essential in power, chemical, and new energy sectors due to their insulation and mechanical strength.
The critical factor in selecting the right tube is its temperature resistance rating. Below is a breakdown of the four main industry categories:
Class B: Standard Industrial Performance (130°C)
Class B tubes, such as the common G10 model, are the most widely used for basic applications.
- They provide reliable mechanical strength and are easy to process into precision components.
- With a breakdown voltage exceeding 35kV in transformer oil, they offer excellent electrical safety.
- These are ideal for dry-type transformer skeletons and high-voltage electrical parts in medium-temperature environments.
Class F: Enhanced Thermal Stability (155°C)
Class F epoxy fiberglass tubes feature an optimized formula for improved performance in demanding conditions.
- They offer high rigidity, dimensional stability, and resistance to weak acid or alkali corrosion.
- Their low water absorption makes them suitable for humid and medium-to-high temperature environments.
- Common applications include motor coil insulation and outdoor electrical protection.
Class H: High-Temperature Power Solutions (180°C)
Using high-temperature resistant resin and step-curing processes, Class H tubes significantly enhance performance.
- They maintain structural stability and excellent dielectric properties even under extreme heat.
- These tubes are primarily used in high-end equipment like arc extinguishing chambers for circuit breakers.
- They are also a core component for high-speed rail motors and current transformer bushings.
Class C: Extreme Heat and Pressure (>180°C)
Class C products represent high-end customization for the most challenging scenarios.
- Modified with ceramic powder, some tubes can withstand short-term temperatures up to 250°C.
- The microcomputer-controlled winding process creates a dense structure resistant to SF6 gas decomposition.
- These are used in specialized fields such as aerospace, deep-well exploration, and rocket molds.
Custom Processing and Supply by RDS
Selecting the right grade depends on your specific working temperature, electrical needs, and budget.
RDS provides comprehensive solutions for epoxy fiberglass tubes. We maintain a complete range of mold sizes and can develop new molds based on your specific requirements. Our facility is equipped with advanced machinery to process finished components according to your technical drawings.
[Contact RDS today for technical inquiries or a custom quote.]