What is the HDPE double wall corrugated pipe?
High density polyethylene (HDPE) double wall corrugated pipe is a new type of pipe with annular structure and smooth inner wall. After more than ten years of development and improvement, has developed from a single variety to a complete product line. At present in the production process and use of technology has been very mature. Due to its excellent performance and relative economic cost, it has been greatly promoted and applied in Europe and America and other developed countries. In China, the popularization and application of HDPE double - wall bellows are on the rise. The inner wall color of double wall bellows is usually blue and black, and some brands will use yellow.