PPR, PE, PVC, HDPE pipe how to distinguish?(4)

HDPE pipe

HDPE pipe is the traditional steel pipe, PVC drinking water pipe replacement products.

HDPE tube must bear a certain pressure, usually choose a large molecular weight, good mechanical properties of PE resin, such as HDPE resin. LDPE resin has low tensile strength, low pressure resistance, poor rigidity, poor dimensional stability when forming, and difficult connection, not suitable for water supply pressure pipe material.

However, LDPE, especially LLDPE resin, has become a common material for the production of drinking water pipes because of its high health index. LDPE, LLDPE resin melting viscosity is small, good fluidity, easy to process, so the choice of its melt index range is also wide, usually MI between 0.3-3G /10min.

The characteristics of HDPE water supply pipeline

HDPE water supply pipeline is widely used, mainly because it has the advantages that other pipelines can not be compared to:

1, easy to welding and electric fusion welding and complete the formation of closed seepage system. When laying along the trench, it can reduce the earthwork of trench excavation and reduce the consumption of accessories.

2, light weight and easy to install and handle;

3, strong wear resistance and excellent hydraulic performance, in the buried pipeline can be without outer protection. Can be applied to earthquake and mining subsidence area, can also be sunk in the river bottom laying.

4, resistance to chemical corrosion, internal, external and microbial corrosion, corrosion resistance is strong, with health. Suitable for conveying acidic and alkaline substances, conveying sewage, natural gas, gas and other substances;

5, good environmental adaptability and frost resistance. It can be used for indoor and outdoor water supply pipes.

6, long service life, with more than 50 years of service life;

7, easy to recycle.

HDPE application areas

HDPE pipeline is mainly used for: municipal engineering water supply system, building indoor water supply system, outdoor buried water supply system and residential area, factory buried water supply system, old pipeline repair, water treatment engineering pipeline system, garden, irrigation and other fields of industrial water pipe.

But it should be noted that the HDPE pipeline can not be used for hot water pipelines.