High density polyethylene (HDPE) has excellent chemical stability, aging resistance and environmental stress cracking resistance. The HDPE Double wall corrugated pipe produced from it is a flexible pipe. Its performance is as follows:
Strong resistance to external pressure
The outer wall has an annular corrugated structure, which greatly enhances the ring stiffness of the pipe, thus enhancing the resistance of the pipe to soil load. In this performance, HDPE Double wall corrugated pipe has obvious advantages compared with other pipes.
Low project cost
Under the condition of the same load, HDPE Double wall corrugated pipe only needs a thinner pipe wall to meet the requirements. Therefore, compared with the solid wall pipe of the same material specification, about half of the raw materials can be saved, so the cost of HDPE Double wall corrugated pipe is also low. This is another outstanding feature of the pipe.
Convenient construction
Due to the light weight of HDPE Double wall bellows and convenient handling and connection, the construction is fast and the maintenance is simple. Under tight construction period and construction
Under poor conditions, its advantages are more obvious.
Small friction coefficient and large flow
HDPE Double wall corrugated pipe made of HDPE can pass through greater flow than other pipes with the same diameter. In other words, HDPE Double wall bellows with relatively small diameter can be used under the same flow requirements.
Low temperature and impact resistance
The embrittlement temperature of HDPE Double wall bellows is - 70 ℃. In general, it is unnecessary to take special protective measures during construction under low temperature (- above 30 ℃), which is convenient for construction in winter, and HDPE Double wall bellows has good impact resistance.
Good chemical stability
Because HDPE molecules have no polarity, they have excellent chemical stability. Except for a few strong oxidants, most chemical media do not damage them. Generally, the soil, electricity and acid-base factors in the use environment will not damage the pipeline, breed bacteria and scale, and its circulation area will not decrease with the increase of operation time.
Long service life
The service life of HDPE Double wall bellows can reach more than 50 years without sunlight and ultraviolet rays.
Excellent wear resistance
Tests in Germany have proved that the wear resistance of HDPE is even several times higher than that of steel pipe.
Proper deflection
A certain length of HDPE Double wall bellows can be slightly flexed axially, not affected by a certain degree of uneven settlement of the ground, and can be directly laid in a slightly non straight groove without pipe fittings, etc.