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At the construction site of drainage pipeline engineering project, HDPE Double wall corrugated pipe and HDPE hollow wall winding pipe are all two types of drainage pipes often selected by everyone.

1. Different production processes

HDPE Double wall corrugated pipe adopts extrusion processing technology. Mechanical equipment extrudes two concentric tube embryos of corrugated outer wall and smooth inner cavity at the same time, which are welded and extruded at one time.The production process of HDPE hollow wall winding pipe is to produce high-density polyethylene (HDPE) into rectangular tube embryo, and then coil and weld.

2. Different specifications

Because the production process of HDPE Double wall corrugated pipe is extrusion processing process, and the die of mechanical equipment should be similar to the size of pipe diameter. Therefore, if you want to produce HDPE Double wall corrugated pipe with large diameter, you need to apply mechanical equipment with large die, and the product R & D cost of this kind of mechanical equipment is almost high. At this stage, only DN1200 can be produced and manufactured in China. The production process flow of HDPE hollow wall winding pipe will not be limited by the pipe diameter. Its unique forming and processing process can produce large-diameter pipes up to DN3000, which is difficult to be completed by other production processes.

3. Different interface modes

HDPE Double wall bellows mainly adopts socket connection, which can be sealed by rubber sealing ring. This kind of interface mode is easy to install and the installation cost is relatively low. HDPE hollow wall winding pipe adopts hot-melt belt connection, and the interface needs to be heated and welded. This interface mode is relatively complicated, and the connection cost is slightly higher than that of double wall bellows.

4. The product cost is different from the price

Because the production process of HDPE Double wall corrugated pipe and HDPE hollow wall winding pipe is different, the utilization rate of raw materials is also different. For the production of pipes with the same pipe diameter and ring stiffness, the utilization rate of raw materials in the extrusion process is high. In other words, HDPE hollow wall winding pipe consumes a lot of materials, and the product cost is relatively high, so the price is also high.

Junhai chemical  is specialized in supplying  HDPE, PVC for  pipe extrusion, double wall corrugated pipe extrusion , and hollow wall winding pipe extrusion , welcome inquiry.