Characteristics of Double Wall Corrugated Pipes

High density polyethylene (HDPE) has excellent chemical stability, aging resistance, and environmental stress cracking resistance. The HDPE double wall corrugated pipe produced from it as raw material belongs to flexible pipe. The required performance is as follows:
Strong resistance to external pressure
The outer wall has a circular corrugated structure, greatly enhancing the ring stiffness of the pipe and thus increasing its resistance to soil loads. In this performance, HDP double wall corrugated pipes have significant advantages compared to other pipes.
Low engineering cost
Under equal load conditions, HDPE double wall corrugated pipes only require thinner pipe walls to meet the requirements. Therefore, compared with solid wall pipes of the same material specifications, HDPE double wall corrugated pipes can save about half of the raw materials, so the cost of HDPE double wall corrugated pipes is also lower. This is another prominent feature of the pipe material.
Convenient construction
Due to the light weight, easy handling and connection of HDPE double wall corrugated pipes, construction is fast and maintenance work is simple. Due to tight schedule and construction
In poor conditions, its advantages are even more apparent.
Low friction coefficient and high flow rate
HDPE double wall corrugated pipes made of HDPE material can pass through larger flow rates than other pipes of the same diameter. In other words, under the same flow requirements, HDPE double wall corrugated pipes with relatively smaller diameters can be used.
Good low temperature resistance and impact resistance
The brittleness temperature of HDPE double wall corrugated pipe is -70 ℃. Under general low temperature conditions (above -30 ℃), no special protective measures need to be taken during construction. Winter construction is convenient, and HDPE double wall corrugated pipes have good impact resistance.
Good chemical stability
Due to the lack of polarity in HDPE molecules, their chemical stability is excellent. Except for a few strong oxidants, most chemical media do not have a destructive effect on it. The soil, electricity, and acid-base factors in the general usage environment will not cause damage to the pipeline, do not breed bacteria, do not scale, and its flow area will not decrease with increasing operating time.
Long service life
The service life of HDPE double wall corrugated pipes can reach more than 50 years without exposure to sunlight and ultraviolet rays.
Excellent wear resistance
Germany has demonstrated through experiments that the wear resistance of HDPE is even several times higher than that of steel pipes.
Appropriate deflection
HDPE double wall corrugated pipes of a certain length can be slightly bent in the axial direction, and are not affected by uneven ground settlement to a certain extent. They can be directly laid in slightly uneven grooves without the need for pipe fittings, and so on.