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HDPE double-wall corrugated pipe is a kind of pipe produced by extrusion molding process with high density polyethylene as the main raw material. It has the characteristics of wave shape, strong structure, corrosion resistance, good compression performance and so on.
HDPE double-wall corrugated pipe uses high-density polyethylene as raw material and has strong corrosion resistance. HDPE double-wall corrugated pipe is light in weight, easy to cut, quick and simple to install, and reduces the difficulty of construction.
HDPE double-wall corrugated pipe has tight structure, strong extrusion resistance, and can withstand high loads and pressures. HDPE double-wall corrugated pipe adopts special structural design, and air is filled between the inner and outer walls, so that it has excellent sealing performance.
HDPE double-wall corrugated pipe has very high aging and corrosion resistance, and the service life is more than 50 years. Because of its excellent corrosion resistance, it reduces the number of maintenance and replacement, and saves a lot of manpower, material and financial resources.
HDPE double-wall corrugated pipe is a kind of green environmental protection material, can be recycled, will not cause pollution to the environment.
The implementation standard is GB/T 19472.1-2004.
Transportation: no scratches, throwing, violent impact, oil and chemical pollution.
| Diameter | Minimum Mean Inside Diameter(mm) | Minimum Laminated Wall Thickness(mm) | Minimum Inner Wall Thickness(mm) | Suggestion Connection Length(mm) |
| DN/ID(mm) | ||||
| 200 | 195 | 1.5 | 1.1 | 54 |
| 300 | 294 | 2 | 1.7 | 65 |
| 400 | 392 | 2.5 | 2.3 | 74 |
| 500 | 490 | 3 | 3 | 85 |
| 600 | 588 | 3.5 | 3.5 | 96 |
| 800 | 785 | 4.5 | 4.5 | 118 |
| 1000 | 985 | 5 | 5 | 140 |
Note:
1. This series of pipes are mainly used in urban water supply engineering. The nominal pressure refers to the maximum allowable working pressure of the pipe conveying water at 20ºC.
2. The weight of the above table is calculated according to the average density of 0.95g/cm³, and the outer diameter and wall thickness are taken as the nominal value plus half of the limit deviation.
We has passed ISO9001:2015 quality management system certification, ISO14001:2015 environmental management system certification, ISO45001:2018 Occupational health and safety management system certification. In addition, we qualify the member cooperation unit with the State Grid Corporation of China and signed a long-term supply contract with the State Grid of China.
High density polyethylene (HDPE) has excellent chemical stability, aging resistance and environmental stress cracking resistance. Therefore, Double-wall corrugated pipe produced using HDPE as raw materials also have this characteristic. Its main properties are as follows:
1. Double-wall corrugated pipe can resist strong external pressure.
The outer wall of the Double-wall corrugated pipe is a ring corrugated structure, which greatly improves the ring stiffness of the pipe. Compared with the commonly used PE pipe, it will have a thinner wall thickness under the requirements of the fixed load force on the soil, and the advantages are obvious.
2. Low procurement cost of Double-wall corrugated pipe.
Because of the characteristics of Double-wall corrugated pipe, under the condition of the same load, only thinner pipe walls can meet the load requirements of the pipe. Therefore, Double-wall corrugated pipe consume less raw materials in production and cost is lower. Its procurement costs are low.
3. Double-wall corrugated pipe are convenient for construction.
Under the condition of meeting the same load, the raw material usage of HDPE Double-wall corrugated pipe is small. So its weight is light. In the construction process, it is easier to be carried and connected, so the choice of HDPE Double-wall corrugated pipe can speed up the construction progress and simplify the later maintenance work. Therefore, it is very suitable for use in the case of tight construction period, low budget and poor construction conditions.
4. Double wall corrugated pipe has large flow rate and small friction resistance
Compared with other pipes, under the same caliber, the flow rate of Double-wall corrugated pipe is larger. This also means that under the fixed flow requirements, the construction side can purchase smaller caliber pipelines.
5. Double-wall corrugated pipe have excellent low temperature resistance and impact resistance
The embrittlement temperature of HDPE Double-wall corrugated pipe is low, under normal circumstances, the winter construction is little affected by temperature, and the outer wall of HDPE Double-wall corrugated pipe has a ring corrugated structure, and the impact resistance is excellent.
6. Double-wall corrugated pipe have high chemical stability.
HDPE molecules show excellent chemical stability without polarity. Except for a few strong oxidants, most chemical media are difficult to destroy its molecular structure. Therefore, in the general use of the environment, soil, electricity, acid-base factors will not cause the pipeline damage, will not breed bacteria or scale, smooth pipe wall does not affect the flow rate and flow area.
7. The Double-wall corrugated pipe have a longer service life.
Under the general conditions not exposed to the ultraviolet rays of the sun, the service life of the Double-wall corrugated pipe of HDPE can reach more than 50 years.
8. Double-wall corrugated pipe have excellent wear resistance.
According to German experiments, the wear resistance of HDPE is even several times higher than that of steel pipes.
9. Double-wall corrugated pipe have appropriate deflection.
In theory, the axial axis of a certain length of HDPE Double-wall corrugated pipe can be slightly curved, and it can be directly laid in a slightly irregular groove without pipe fittings, simplifying the construction.
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