HDPE is a kind of good pipeline, should not only have good economy, but also should have stable and reliable interface, impact resistant material, cracking resistance, aging resistance, corrosion resistance and a series of advantages, compared with the traditional pipe, HDPE pipe system has the following advantages:
The connection is reliable: electric thermal fusion is used to connect the pipe system, the strength of the joint is higher than the strength of the pipe body.
2 good low-temperature impact resistance: polyethylene of low temperature brittle temperature is extremely low, can be in 60-60 ℃ temperature range for safe use. During the winter construction, the pipe will not crack because of good impact resistance.
The anti-stress cracking is good: HDPE has low notch sensitivity, high shear strength and excellent resistance to scratches, and the environmental stress cracking performance is very prominent.
It has good chemical corrosiveness: HDPE pipeline can withstand the corrosion of many chemical media, and the chemical substances in the soil will not cause any degradation of the pipe. Polyethylene is an electrical insulator, so no rot, rust or electrochemical corrosion will occur. It also does not promote the growth of algae, bacteria or fungi.
Aging and long service life: a 2-2.5 percent evenly distributed carbon black polyethylene pipe can be stored in open air for 50 years and will not be damaged by ultraviolet radiation.
Good wear resistance: HDPE pipeline and steel tube wear resistance comparison test show that the resistance of HDPE pipe is four times that of steel pipe. Compared with steel pipes, the HDPE pipe has better wear resistance in the mud conveying area, which means the HDPE pipeline has longer service life and better economy.
Once good flexible: flexible makes it easy to bend, HDPE pipe engineering by changing the way for piping around obstructions, on many occasions, the flexible pipe can reduce the dosage of pipe fittings and reduce the cost of installation.
The water flow resistance is small: the HDPE pipe has a smooth inner surface, and the manning coefficient is 0.009. The smooth performance and non-adhesion characteristics guarantee that the HDPE pipeline has higher transmission capacity than traditional pipes, and also reduces the pressure loss and energy consumption of the pipeline.
'levies handling convenient: HDPE pipe than concrete pipes, galvanized pipe and steel pipe is lighter, it is easy to handle and install, less manpower and equipment needs, means that the project installation cost greatly reduced.
⑽ multiple new construction methods: HDPE pipe has a variety of construction technology, in addition to the traditional excavation method may be used for construction, can also use a variety of new trenchless technologies such as pipe jacking, directional drilling, liner, in the form of pipe and construction, for some do not allow the excavation sites, is the only choice.