The pipeline friction coefficient is small, the water flow is smooth, it is not easy to block, and the maintenance workload is small.

The material has high oxygen index and self extinguishing property.

The linear expansion coefficient of the pipeline is small, 0.07mm / ℃, and the deformation affected by temperature is small. The thermal conductivity and elastic modulus are small, and the anti freezing performance is excellent compared with the cast iron drainage pipe.