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2022

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07

What are the characteristics of PE gas pipes?

Author:


 

Characteristics of PE gas pipes:

(1) Reliable connection: The polyethylene piping systems are connected by electrothermal fusion, and the strength of the joint is higher than that of the pipe body.

(2) Good impact resistance at low temperature: The low temperature embrittlement temperature of polyethylene is extremely low, and it can be used safely in the temperature range of -60-60 °C. During construction in winter, due to the good impact resistance of the material, the pipe will not be brittle.

⑶ Good stress cracking resistance: HDPE has low notch sensitivity, high shear strength and excellent scratch resistance, and the environmental stress cracking resistance is also very outstanding.

⑷Good chemical corrosion resistance: HDPE pipes are resistant to corrosion by a variety of chemical media, and the chemicals present in the soil will not cause any degradation to the pipes. Polyethylene is an electrical insulator, so it does not rot, rust or electrochemically corrode; it also does not promote algae, bacterial or fungal growth.

⑸Aging resistance and long service life: polyethylene pipes containing 2-2.5% evenly distributed carbon black can be stored or used outdoors for 50 years without being damaged by ultraviolet radiation.

⑹ Good wear resistance: The comparison test of wear resistance between HDPE pipe and steel pipe shows that the wear resistance of HDPE pipe is 4 times that of steel pipe. In the field of mud transportation, compared with steel pipes, HDPE pipes have better wear resistance, which means that HDPE pipes have longer service life and better economy.

⑺Good flexibility: The flexibility of HDPE pipe makes it easy to bend, and in engineering, obstacles can be bypassed by changing the direction of the pipe. In many occasions, the flexibility of the pipe can reduce the amount of pipe fittings and installation costs.

⑻Easy to handle: HDPE pipes are lighter than concrete pipes, galvanized pipes and steel pipes. It is easy to handle and install, and lower manpower and equipment requirements mean that the installation cost of the project is greatly reduced.

⑼ A variety of new construction methods: HDPE pipes have a variety of construction technologies. In addition to traditional excavation methods, various new trenchless technologies such as pipe jacking, directional drilling, lining, It is a good choice for some places where excavation is not allowed, so HDPE pipes are used in a wider range of applications.