A Brief Discussion On The Development Of Hdpe Pipes

Plastic pipes have made great progress and improvement in design theory and construction technology in construction, and accumulated rich practical experience, which has promoted plastic pipes to occupy a very important position in building water supply and drainage pipeline projects and formed a an unstoppable development trend.

In China, the plastic pipes commonly used in water supply pipelines mainly include PVC-U water supply pipes, PP-R pipes, aluminum-plastic composite pipes (PAP), steel-plastic composite pipes (SP), HDPE pipes, etc. HDPE pipes are formed by hot extrusion using advanced production processes and technologies. They have the characteristics of corrosion resistance, smooth inner wall, low flow resistance, high strength, good toughness, and light weight. HDPE pipes are the second most consumed plastic pipe type in the world after PVC-U drainage pipes.

In the water supply and drainage pipeline system, plastic pipes have gradually replaced traditional pipes such as cast iron pipes and galvanized steel pipes as the mainstream pipes. Compared with traditional pipes, plastic pipes have significant advantages such as light weight, corrosion resistance, low water flow resistance, energy saving, easy and quick installation, and low cost, and are favored by the pipeline engineering community. At the same time, with the rapid development of the petrochemical industry and the continuous advancement of plastic manufacturing technology, the output of plastic pipes has increased rapidly and the types of products have become more diversified.

HDPE pipes are the second most consumed plastic pipe type in the world after PVC-U drainage pipes. Medium or high-density polyethylene pipes of PE80 and PE100 grades should be used to transport gas; medium or high-density polyethylene pipes of PE80 and PE100 grades are usually used for water supply pipes, and PE63 has been gradually phased out. In terms of water transportation, the fastest growing is the PE100 pipeline system, with a growth rate of more than 10% in the next five years.

In Europe, HDPE pipes have been developed and applied more rapidly. HDPE pipes have gradually replaced PVC-U pipes and become the main consumer pipes. At the same time, HDPE pipes are gradually being used outside Europe.

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