In the water supply and drainage pipe system, the plastic pipe has gradually replaced the traditional pipe material such as cast iron pipe and galvanized steel pipe. Plastic pipe compared with the traditional pipe, with light weight, corrosion resistance, small flow resistance, energy saving, convenient installation fast, low cost advantage, get the favour of the pipeline engineering. At the same time, with the rapid development of petrochemical industry and the continuous improvement of plastic manufacturing technology, the production of plastic tubes is increasing rapidly and the products are more diversified.
The HDPE pipeline is the second most consumed plastic pipe in the world after PVC-U drainage. A medium or high density polyethylene pipe with PE80 and PE100 grades should be used for conveying gas. PE80 and PE100 or high density polyethylene pipes are usually used for water pipes, and PE63 is gradually becoming obsolete. In terms of water delivery, the fastest growth is the PE100 pipeline, which is expected to grow by more than 10 percent over the next five years.
In Europe, the HDPE pipeline has been developed and applied more rapidly, and the HDPE pipeline has gradually replaced the status of PVC-U pipeline as the main consumption pipeline. At the same time, the HDPE tube is gradually being used outside Europe.