What about HDPE double-wall corrugated pipes?
This question cannot be generalized, and should be analyzed according to your specific situation. Here is a brief introduction to the characteristics of HDPE double-wall bellows for your reference. Features: 1. Unique product structure and strong pressure resistance; 2. Smooth inner wall and large flow rate; 3. Convenient product connection, good interface sealing, corrosion resistance, zero leakage, no scaling, avoiding secondary pollution, ideal "Green pipe material"; 4. The product has good deflection properties and can adapt to uneven settlement of the soil; 5. Long service life, buried use for more than 50 years; 6. Light product weight, easy construction, can reduce construction Cost and shorten the construction period; 7. At a speed of 15 feet per second, the wear resistance is 3 to 5 times higher than that of ordinary or fine-grained steel pipes. Process, digital centralized control of the whole line. Double-machine co-extrusion, double-layer split-flow, full-vacuum tape feeding, random flaring and one-time forming. HDPE double-wall corrugated pipe has excellent chemical stability, aging resistance and environmental stress cracking resistance. The HDPE double-wall corrugated pipe produced from it as a raw material is a flexible pipe. The main performance is as follows: strong external pressure resistance, the outer wall is ring-shaped corrugated structure, which greatly enhances the ring rigidity of the pipe, thereby enhancing the resistance of the pipe to the soil load. In this aspect, HDPE double-wall corrugated pipe and other pipes Compared with it has obvious advantages. The project cost is low. Under the condition of equal load, HDPE double-wall corrugated pipe only needs a thinner wall to meet the requirements. Therefore, compared with solid wall pipes of the same material specifications, about half of the raw materials can be saved, so the cost of HDPE double-wall corrugated pipes is also lower. This is another very prominent feature of the pipe. It is convenient to construct. Due to the light weight of HDPE double-wall corrugated pipe and convenient transportation and connection, the construction is quick and the maintenance work is simple.
The construction period is tight and construction. In the case of poor conditions, its advantages are more obvious. The friction coefficient is small and the flow rate is large. The HDPE double-wall corrugated pipe using HDPE as the material can pass a larger flow rate than other pipe materials of the same diameter. In other words, under the same flow requirements, HDPE double-wall bellows with a relatively small diameter can be used. Good low temperature resistance and impact resistance. The embrittlement temperature of HDPE double-wall corrugated pipe is -70 ℃. Under low temperature conditions (above -30 ℃), special protection measures are not necessary during construction. It is convenient to construct in winter, and HDPE double-wall corrugated pipes have good impact resistance. The chemical stability is good. Since the HDPE molecule has no polarity, the chemical stability is excellent. Except for a few strong oxidants, most chemical mediators are not destructive. Generally, the soil, power, acid and alkali factors of the environment will not damage the pipeline, and will not breed bacteria or scale, and its flow area will not decrease with the increase of operating time. With long service life, the service life of HDPE double-wall corrugated pipes can reach more than 50 years without being exposed to sunlight and ultraviolet rays. Excellent wear resistance, Germany has used experiments to prove that the wear resistance of HDPE is even several times higher than that of steel pipes. Appropriate degree of deflection, a certain length of HDPE double-wall corrugated pipe can be slightly deflected in the axial direction, and is not affected by the uneven settlement of the ground to a certain degree. It can be directly laid in a slightly uneven groove without using pipe fittings.
Advantages: 1. Unique structure, high resistance to external pressure, impact resistance, ring flexibility, smooth inner wall friction and small friction, pipes with the same inner diameter can pass larger flows; socket interface, flexible connection, convenient connection, high reliability , Not easy to leak. 2. Light weight, quick construction and lower cost. 3. The service life of the buried ground is more than fifty years. 4. Polyethylene is a hydrocarbon polymer. The molecule is non-polar and resistant to acid and alkali corrosion. 5. The raw materials are green and environmentally friendly materials, non-toxic, non-corrosive, non-scaling, recyclable. 6. The applicable temperature range is wide, the pipeline does not break in the environment of -60 ℃, and the high temperature of the transport medium is 60 ℃. 7. The cost of the comprehensive project is basically the same as that of concrete, and the operating cost is low. 8. No foundation is required when the soil quality is good.