1. Good corrosion resistance, long service life, can be used in wet saline alkali areas.
2. Flame retardant, good heat resistance, can be temporarily used at 130 ℃ without deformation, and can not be extinguished in case of fire.
3. High strength and rigidity. No concrete maintenance layer is required to be directly buried under the outer lane, which can speed up the construction progress of the cable project.
4. Both pipes and pipe fittings of cable maintenance sleeve have certain flexibility and can resist the damage caused by external heavy pressure and root settlement.
5. It has good anti disturbance function of external signals.
6. The inner wall is lubricated, and the cable is not scratched. Socket type connection is adopted in the design to facilitate device connection. The joint is sealed with rubber sealing ring, which not only conforms to thermal expansion and cold contraction, but also avoids the ingress of mud and sand.
