Double Wall Corrugated Pipe Specification

HDPE Double Wall Corrugated Pipe Specification

HDPE double wall corrugated pipe price list:

• Double Wall corrugated pipe Bellows dn110 price $1.4 

• Double Wall corrugated pipe Bellows dn200  price $2.57-$3.04

• Double Wall corrugated pipe Bellows dn300 price $5.03-$5.97

• Double Wall corrugated pipe Bellows dn400 price $8.42/M-$10.76

• Double Wall corrugated pipe Bellows dn500 price $12.87USD-$15.91

• Double Wall corrugated pipe Bellows dn600 price $17.43-$23.16

Features of HDPE pipe

Advantages of HDPE double wall corrugated pipe

High-density polyethylene (HDPE) double wall corrugated pipe is a pipe with corrugated structure processed by extruding HDPE as the main raw material and adding necessary additives. Its wall section is double

Layer structure, the surface of the inner wall is smooth, and the outer wall is an equidistant arrangement of annular hollow corrugated pipes. The following are the characteristics or advantages of HDPE pipes.

(1) The ring corrugated structure has excellent mechanical properties of both rigidity and flexibility, high ring stiffness, good flexibility, compression resistance and impact resistance.

(2) The inner wall of the pipeline is smooth, the frictional resistance of the fluid is small, and the flow rate is large. When transporting liquid, the frictional resistance is significantly smaller than that of concrete pipes, and the water delivery capacity can be increased by 40% compared with concrete pipes with the same inner diameter under the same use conditions. Therefore, small-diameter HDPE double wall corrugated pipes can be used to replace large-diameter cement pipes.

(3) Hollow rib structure, light weight, convenient transportation and construction, reducing construction costs. The double wall hdpe pipe with a diameter of 1000 1T11TI and a ring stiffness of 8 kN/mz is only about 90 kg/m, which is 1/8 of the concrete pipe, which is convenient for handling and construction, and does not require handling and hoisting equipment.

(4) The connection is convenient, the joints are well sealed, the quality is reliable for long-term operation, and there is no leakage. It is safe and reliable. It adopts the connection technology of electric hot melt belt or heat shrinkable belt. The construction is quick, the connection quality is high, and the joint strength is strong, which can ensure that the sewage in the double wall hdpe pipe does not leak outside, and reduce construction time and cost.

(5) It has stable chemical properties, corrosion resistance, non-toxic and pollution-free, and is an environmentally friendly pipe material. Strong chemical resistance and aging resistance. The pipe is made of inert HDPE, with stable chemical properties, strong acid, alkali and salt resistance, and corrosion resistance to sewage, waste water, chemicals and rotten substances in the soil.

No rust, no anti-corrosion treatment is required when transporting corrosive fluid or laying in corrosive soil.

(6) Low temperature resistance, good wear resistance, long buried service life, under the condition of not being exposed to direct sunlight and ultraviolet rays, the service life can reach more than 50 years.

(7) It has good flexibility and good anti-settling performance. HDPE is a high polymer and belongs to viscoplastic material. Its flexibility can better adapt to the uneven settlement of the foundation, thereby improving the seismic capacity of the pipeline, and will not cause disjoint fracture like rigid concrete pipes. Appropriate degree of deflection, the pipe can be directly laid in the slightly curved groove without pipe fittings.

(8) The construction is almost not affected by seasons and temperatures, within a 20. It can operate normally in the temperature range of C ~ 400C.

(9) Recyclable. HDPE is a non-toxic material that is harmless to the land, does not scale, does not reproduce microorganisms, and can be recycled. The cooling water in the production process can be recycled and no pollutants are produced. It is an environmentally friendly green product. Based on the above characteristics, under the same conditions, the comprehensive cost of the project using HDPE pipes is lower than that of other pipes, especially in the non-excavation traction pipe project, its cost is far lower than that of other pipes, and its engineering quality and reliability are higher than those of steel bars. Concrete pipes are guaranteed. HDPE pipes are used in a wide range of applications. Due to the unique structural characteristics of HDPE pipes, they are especially suitable for geological conditions such as high groundwater levels, weak foundations, and prone to uneven settlement.

And the construction of projects that need to rush the construction period.

We act as a professional double wall corrugated pipe manufacturer and supplier in China. It is precisely because HDPE double wall corrugated pipe has the above advantages compared with steel pipes that it has been widely recognized in the markets of various countries around the world. The double wall corrugated pipes of various specifications we produce have the above advantages. Of course, if you want double wall bellows with special specifications, such as super-large diameter double wall corrugated pipes. Please contact us directly, our factory can customize double wall corrugated pipe for you.

Technical requirements for HDPE pipe construction

HDPE pipe connection

The connection method of double wall hdpe pipe is generally heat shrinkable sleeve connection and electric heating belt connection.

(1) Heat-shrinkable sleeve connection Align the two pipes in a straight line. After removing the debris and moisture on the surface of the pipes, wrap a piece of heat-shrinkable tape around the joint of the pipes, and bake it with a flame spray gun to make the heat-shrinkable tape stick to the pipes. Put them together, then wrap another piece of heat shrinkable tape on the first heat shrinkable tape, fix the heat shrinkable tape with clips, and finally use a flame spray gun to heat evenly from the center of the heat shrinkable tape up and down. Then heat from left to right, so that the heat shrinkable tape is completely shrunk and wrapped on the pipe.

(2) Electric melting belt connection Align the two pipes into a straight line. After removing the debris and moisture on the surface of the pipes, use a piece of electric melting tape to wrap the pipe joints tightly and fasten them with a buckle. Connect the electric melting machine and start it. Set the current intensity when heating. After the heat melting process is completed, fasten the buckle again. After cooling for a certain period of time (generally, the cooling time is 10 minutes in winter and 20 minutes in summer) before releasing the buckle.

The above double wall corrugated pipe connection methods are professional pipe connection methods. If you need, you can perform double wall corrugated pipe connection according to the above method. Our factory adopts professional pipe connection technology. We have professional senior technicians. If customers buy pipes and want to know more about pipe connection technology, or if you have any questions and suggestions about pipe connection, please contact us.

Connection between HDPE pipe and inspection chamber

The HDPE pipe extends into the well from the pipe trench, and the pipe is supported by two different types of support from hard to soft and from soft to hard. Therefore, measures need to be taken to prevent leakage between the well and the pipe, so that the pipe can be evenly supported. Prevent shear or concentrated loads from occurring. There are two ways to connect the pipeline to the well wall.

(1) The inspection well is made of bricks and concrete pouring. The surface of the joint between the pipe and the well wall can be coated evenly with polyvinyl chloride adhesive, and then a layer of fine sand can be sprinkled on it. Then use cement mortar to build into the inspection well wall.

(2) The pipeline is located on soft soil foundation or in low-lying, swampy, high groundwater areas. A section of 0.5-0.8 m long HDPE double wall corrugated pipe can be used to cover the water stop ring, and first connect the inspection well with mortar,then connect with the whole HDPE winding pipe. Groove formation is fast and backfilling is fast. You can also backfill part of the good soil in advance to press the HDPE winding pipe to prevent the HDPE winding pipe from drifting. If the time is not allowed, you can also use sandbags to hold it down.

During the construction process, there are many hdpe pipes that need to be connected with the inspection chamber. The above professional hdpe pipes and inspection chamber connection methods can be used for your reference. Our factory also provides inspection chambers, if you need inspection chambers or other products, you can leave us a message on the website, and we will have professional personnel to contact you.

Precautions when installing HDPE pipe

(1) When excavating trenches, the elevation of the base should be strictly controlled. If the bearing capacity of the base is good, the undisturbed soil can be directly used as the pipeline foundation through proper treatment. However, if over-excavation or disturbance occurs, it must be backfilled with sand or good soil after tamping Then lay the HDPE winding pipe.

(2) When installing HDPE pipes in the lower groove, it is necessary to ensure that the drainage of the groove is smooth, and it is strictly forbidden to soak the groove to prevent electric shock accidents during electric heating.

(3) During construction in the rainy season, the length of the groove should be shortened as much as possible, and the groove should be formed and backfilled as early as possible.

(4) When hoisting HDPE pipes, use non-metallic ropes for two-point handling, and string hoisting is strictly prohibited.

(5) A certain depth can be over-excavated or a space can be reserved at the HDPE pipe interface to facilitate the welding of the HDPE double wall drainage pipe. After the connection is completed, it should be tamped here, which is the weakest part of the pipeline.

(6) When connecting HDPE double wall drainage pipe, adjust the heating time and current intensity according to the operating procedures, otherwise it will lead to poor sealing at the pipe joints.

(7) During the backfilling process, the sundries in the backfilling material, especially the hard objects with large particles, should be removed to prevent the HDPE winding pipe from being damaged.

(8) The HDPE double wall drainage pipe should be laid in a straight line, and when the flexible interface is used for laying, the relative rotation angle of each joint of the HDPE winding pipe should not be greater than 2° under normal circumstances.

(9) The compactness of the pipe area must meet the design requirements, achieve layered compaction, and carry out symmetrical compaction along the centerline of the HDPE double wall drainage pipe to reduce the deformation of the pipe.

In the process of installing double wall corrugated pipes, it is inevitable that there will be large and small problems. Again, the precautions for installing the pipes are specially listed. If the above precautions are not clear to customers, please contact our professional technicians. In addition to providing customers with high-quality double wall corrugated pipes, we will also provide customers with professional pipe installation technology.