What are the functional characteristics of hdpe water supply pipe?



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A good pipeline must not only have good economy, but also have a series of advantages such as stable and reliable interface, impact resistance, cracking resistance, aging resistance, and material corrosion resistance. Compared with traditional pipelines,hdpe water supply pipeThe system has the following advantages:

(1) Reliable connection: The polyethylene pipeline system adopts electrofusion connection, and the joint strength is higher than the pipe body strength.

(2) Low-temperature impact resistance: The low-temperature embrittlement temperature of polyethylene is extremely low, and it can be used safely at -60-60 ℃. In winter construction, due to the good impact resistance of the material, the pipeline will not be brittle.

(3) good stress cracking resistance: hdpe water supply pipe has low notch sensitivity, high shear strength and excellent scratch resistance, and its environmental stress cracking resistance is also outstanding.

(4) Good chemical resistance: hdpe water supply pipe can resist the corrosion of various chemical media, and the chemical substances in the soil will not cause any degradation to the pipeline. Polyethylene is an electrical insulator, so it will not rot, Rust or electrochemical corrosion. In addition, it does not promote the growth of algae, bacteria or fungi.

(5) Aging resistance and long service life: The polyethylene pipe contains 2-2.5% evenly distributed carbon black, which can be stored or used outdoors for 50 years without being damaged by ultraviolet rays.

(6) Good wear resistance: The wear resistance comparison test of hdpe pipe and steel pipe shows that the wear resistance of hdpe pipe is 4 times that of steel pipe. In the field of slurry transportation, hdpe pipe has better wear resistance than steel pipe, that is to say, hdpe pipe has a longer service life and better economy.

(7) Good elasticity: The elasticity of hdpe water supply pipe makes it easy to bend. In engineering, obstacles can be bypassed by changing the direction of the pipeline. In many occasions, the flexibility of the pipeline can reduce the number of pipe fittings and installation costs.

(8) low flow resistance: the inner surface of hdpe pipeline is smooth, and the manning coefficient is 0.009. the smooth performance and non-adhesion characteristics ensure that hdpe pipeline has higher conveying capacity than traditional pipeline, and also reduces the pressure loss and energy consumption of water transmission.

(9) Convenient handling: hdpe pipes are lighter than cement pipes, galvanized pipes, and steel pipes, and are easy to handle and install. Lower manpower and equipment requirements mean that the installation cost of the project is greatly reduced.