Double Wall bellows is a new type of lightweight pipe made of high-density polyethylene. It has the characteristics of light weight, high pressure resistance, good toughness, fast construction and long service life. Its intentional wall structure design and other structures Compared with pipes, the cost is greatly reduced. And because the connection is convenient and reliable, it is widely used at home and abroad. A large number of alternative concrete pipes and cast iron pipes.
High density polyethylene (HDPE) double wall corrugated pipe is a new type of pipe with annular structure outer wall and smooth inner wall. It was first developed in Germany in the early 1980s. After more than ten years of development and improvement, it has developed from a single variety to a complete product series. At present, it has been very mature in production technology and application technology. Because of its excellent performance and relatively economic cost, it has been greatly popularized and applied in Europe, America and other developed countries. In China, the promotion and application of HDPE Double wall bellows is in the rising stage, and all technical indexes meet the application standards. The inner wall color of double wall corrugated pipe usually has blue and black, and the inner wall of some brands will use yellow.
