Advantages of Plastic flex down pipe:
1. Good performance. Corrosion resistance, high impact strength, small fluid resistance, aging resistance, long service life, is an ideal material for building drainage and chemical sewage.
2. Easy to install. The weight is only 1/7 of the cast iron pipe of the same diameter, which can greatly speed up the project progress and reduce the construction cost.
3. The inner wall is smooth and not easy to block. The design of the inspection port is unique, and the inspection operation is convenient and does not require anything.
4. Economical. The overall cost of using UPVC drainage pipes is lower than that of cast iron pipes of the same specification, and the maintenance cost is lower.
Disadvantages of Plastic flex down pipe:
1. Easy to age. Due to the strong ultraviolet radiation outdoors, the service life is greatly reduced, only about 10 years.
2. Poor impact. The expansion coefficient is large, and the pressure bearing capacity of the UPVC drainage pipe is weak; the building fire problem, the flame retardancy is poor; the heat resistance is poor, the softening temperature is low, and the low temperature performance is poor.
3, the noise is large. Because the inner wall of the drain pipe is relatively smooth, the water flow is not easy to form a water film to flow along the pipe wall, and hit the pipe wall in a chaotic state in the pipe.
