If it is artificially destroyed, it is hard to say that the steel belt corrugated pipe is a three-layer structure. The inner layer uses high-density polyethylene (hdpe) as the base material, the middle is the steel belt skeleton, and the outer layer is resin. The corrugated pipe is synthesized through winding and extrusion plastic process. That is, the production line for spiral corrugated pipes.
Next, select materials from pipes and make steel belt framework. Inner layer shaping. The production of steel belt bellows is introduced in detail from the aspects of overall support synthesis, outer resin bending, winding and inspection. The raw material needs good polyethylene - hdpe high-density polyethylene, and the melting process is strictly temperature controlled, which requires high operating experience and production technology.
The fabrication of steel belt framework directly affects the ring stiffness of steel belt bellows. High density polyethylene (HDPE) double wall corrugated pipe is a new type of pipe with annular structure and outer 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, the production process and application technology are very mature. Because of its excellent performance and relatively economical cost, it has been greatly promoted and applied in Europe, America and other developed countries. In China, the promotion and application of HDPE double wall corrugated pipe is in the rising stage, and all technical indicators have reached the use standard.
