With the gradual and widespread application of carbon fiber materials, the development of carbon fiber manhole covers meets the requirements of energy-saving and environmental protection policies, so they are called “green manhole covers”.
No rust and other advantages, significant economic benefits, so it has a strong market competitiveness.
In addition to the excellent properties of light weight, corrosion resistance, anti-theft, and good shock resistance, carbon fiber composite manhole covers have more outstanding features:
1. Long life, the outstanding anti-fatigue characteristics, anti-friction and wear resistance, and corrosion resistance of carbon fiber composite materials greatly improve the comprehensive performance and service life of the manhole cover. The theoretical life of the carbon fiber composite manhole cover can reach 20 to 30 years, which can greatly reduce replacement cost.
2. It has good environmental aging resistance, and the linear expansion coefficient of carbon fiber is small, which is an ideal material that “does not expand when heated and does not shrink when cooled”.
3. High strength, the overall strength of the manhole cover reinforced with carbon fiber is greatly improved, which is comparable to that of cast iron, and can be used in road sections with large traffic volume and high load.