Advantages of FRP flue
1. The inner cavity is smooth and clean without scratching the cable. The silicone sealing ring socket connector is convenient for installation and connection, and integrates heat expansion and cold contraction.
2. No electrical etching, non-magnetic. Unlike the seamless steel pipe and other permanent magnetic materials, the electric vortex will promote the burning and damage of the cable.
3. It has good insulation, flame retardancy and temperature resistance, and can be used at 130 ℃ for a long time without deformation.

4. It is resistant to corrosion and has a long service life. It can resist the corrosion of various corrosive substances such as acid, alkali, salt and solvent. Its service life reaches 50 years.
5. With high compressive strength, it can be directly buried under the motorway without adding the thickness of concrete protective layer, which can accelerate the progress of the project. 6. With small proportion and light quality, one person can lift it and two people can carry out the installation, which can greatly shorten the construction cycle time of the project, reduce the installation cost, and prevent the long exposure time of the foundation pit excavation of the road surface from endangering the traffic management in large cities.
7. It has good ductility and can resist the damage caused by external pressure and basic foundation settlement.