Phenolic resin paper tube is a composite product made by impregnating paper with phenolic resin and then rolling it. It has high mechanical strength, good heat - resistance and electrical insulation properties. Resistant to wear and chemicals, it's widely used in electrical equipment, transformers and mechanical structures, ensuring stable and reliable operation. 

The Phenolic Resin Paper Tube is a high-quality insulating material made from electrical-grade paper impregnated with phenolic resin, then rolled, baked, and cured to achieve excellent mechanical and dielectric performance. Designed for electrical and electronic applications, the Phenolic Resin Paper Tube features outstanding thermal stability, moisture resistance, and compressive strength, making it ideal for use in humid environments and transformer oils. Classified as insulation class E (120°C), it provides reliable performance in medium-temperature electrical systems, ensuring long-term stability and safety.

The Phenolic Resin Paper Tube exhibits superior mechanical strength with a flexural strength above 50 MPa and compressive strength exceeding 60 MPa, ensuring excellent structural integrity even under stress. Its density reaches up to 1.10 g/cm³, offering strong durability and low water absorption. Available in outer diameters from 10 to 300 mm and wall thicknesses between 1 to 50 mm, it can be customized to meet various design requirements.
With its smooth surface, consistent wall thickness, and high dielectric properties, the Phenolic Resin Paper Tube is widely used as an insulating and structural component in transformers, motors, switches, and other electrical equipment. It meets international quality standards such as UL certification (No. E310670) and complies with ROHS and REACH requirements, making it a reliable, safe, and eco-friendly solution for advanced electrical insulation applications.