HDPEHollow winding pipe HDPE double wall hollow winding pipe HDPE hollow (double wall) winding pipe

Double walled wrapped large-diameter plastic drainage pipes are made of high-density polyethylene (HDPE) as raw material, wound into a spring like structure through a special method, and melted and welded into pipes under high pressure using high-temperature welding rods of the same material. The pipes have the characteristics of spring flexibility, compressibility, stretchability but not flattening, which is very important for municipal drainage pipes with basically no internal pressure and relatively high external pressure; Because this structure provides excellent resistance to external pressure for the pipe material; The welding rod of the welded square tube forms an I-shaped reinforcement structure with the two walls of the square tube. This structure is constrained by the inner and outer double walls, and its position is relatively stable. The structure of the tube is stable under external pressure, greatly improving its ability to withstand external loads. The spiral hollow structure wall of the tube not only improves its ability to withstand external pressure, but also reduces the weight of the product.

HDPE high-density polyethylene hollow wall wrapped pipe is a new type of green and environmentally friendly building material product. It is a key promoted product by the Ministry of Construction of China to replace steel and cement with plastic. It plays a very important role in energy conservation, pollution reduction, and environmental protection.
Large caliber hollow wall wrapped pipe is a structural wall pipe made of high-density polyethylene (HDPE) as raw material, wrapped into a spring like structure through a special method, and melted and welded under high pressure with high-temperature welding rods of the same material. It is a structural wall pipe made by hot winding forming process, and the product meets the requirements of the national standard "Polyethylene (PE) Structural Wall Pipe System for Underground Use" Part 2: "Polyethylene Wrapped Structural Wall Pipe" (GB/T19472.2-2004). This pipe is suitable for transporting water at temperatures below 45 ℃.

Product performance:
1. High quality of fusion joint: The special-shaped structural profiles extruded from the extruder die are evenly wound on the drum mold at the predetermined position, and the PE melt material is synchronously extruded to fuse the special-shaped structural profiles into a whole, ensuring the quality of the fusion joint of the structural wall tube.

2. Excellent installation performance, simple connection, reasonable joint sealing form, safe and reliable: The pipeline adopts electric heating fusion tape or heat shrink tape connection technology, which is fast in construction, high in connection quality, and strong in joint strength, ensuring the unity of interface material, structure and pipe body itself. Compared with rubber ring joints or other mechanical joints, there is no risk of leakage caused by joints. At the same time, due to its lighter weight compared to other pipes under the same application conditions, it is easy to transport and construct quickly, which can reduce construction costs. In application, the pipe can be directly laid without the need for a qualified concrete cushion layer and concrete pipe foundation trench. It can achieve simultaneous excavation, pipe laying, and backfilling, simplifying the construction process and shortening the construction period.

3. It has good flexibility and seismic performance: HDPE is a high molecular polymer that provides excellent flexibility and overall resistance to external pressure for hollow wall wrapped pipes. When used on roads with heavy loads, it can ensure safe passage. Due to the flexibility of pipes, they can minimize pipeline damage and losses during geological activities such as earthquakes and uneven ground settlement, thereby improving the seismic and disaster reduction capabilities of public facilities.

4. High ring stiffness: The pipeline is formed by winding technology, which improves the ring stiffness of the pipe material while saving materials.

5. Strong chemical and aging resistance: High density polyethylene has extremely strong corrosion resistance and resistance to chemical erosion. It does not require any anti-corrosion treatment when transporting corrosive fluids or laying in highly corrosive soil, and its performance is much better than other pipes. Due to its excellent aging resistance, it can ensure a service life of 50 years when used as a buried pipeline.

6. Good hygiene performance: High density polyethylene wrapped structural wall pipes are processed without any additives, using 100% high-density polyethylene without any toxicity, scaling, or microbial growth. The cooling water of the product is recycled during the production process, producing no pollutants to the environment. Waste pipes of the same brand can be 100% recycled and reused.

7. The inner wall roughness of the pipe is low, and the water delivery capacity is large: the inner wall roughness N of the hollow wall wrapped pipe is about 0.010, so the specific friction when transporting fluids is small. Under the same usage conditions, the water delivery capacity can be significantly improved compared to cement pipes. Therefore, hollow wall wrapped pipes with smaller inner diameters can be used to replace cement pipes with larger inner diameters, reducing the project cost.

8. In application, the reliability of using hollow wall wrapped pipe engineering under the same conditions will be improved compared to traditional pipe materials, with significant comprehensive benefits, especially in narrow construction sites, dense buildings, complex underground pipelines and busy traffic sections, as well as in laying in acidic and alkaline soils, which is more advantageous.
High density polyethylene (HDPE) winding reinforcement pipe is made of high-density polyethylene as raw material and formed by hot extrusion winding, which has the characteristics of environmental protection, safety, and energy saving. Its special same material electric fusion welding technology can achieve zero leakage in pipeline systems.

physical property

Product application:

The product is widely used in urban municipal drainage, outdoor drainage of buildings, underground irrigation and drainage of farmland water conservancy, industrial sewage, road drainage, sewage treatment plants, sports field square engineering drainage, and electrical and telecommunications engineering. It is an ideal replacement product for reinforced concrete pipes and cast iron pipes.