At present, in the water supply and drainage pipeline system, plastic pipes have gradually replaced traditional pipes such as cast iron pipes and galvanized steel pipes and become the mainstream pipes. Compared with traditional pipes, plastic pipes have significant advantages such as light weight, corrosion resistance, low water flow resistance, energy saving, simple and rapid 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 progress of plastic manufacturing technology, the output of plastic pipes has increased rapidly, and the types of products have become more diversified. Moreover, plastic pipes have achieved great development 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 engineering, and form an unstoppable development trend.
In China, most of the plastic pipes used in water supply pipes mainly include PVC-U water supply pipes, PP-R pipes, aluminum-plastic composite pipes (PAP), steel-plastic composite pipes (SP), HDPE pipes, etc. HDPE pipe has only appeared in the market in the last two decades. It adopts advanced production technology and technology and is formed by hot extrusion. It has the characteristics of corrosion resistance, smooth inner wall, low flow resistance, high strength, good toughness and light weight.
After the PVC-U water supply pipe, HDPE pipe has become the second most consumed plastic pipe variety in the world. At present, medium or high density polyethylene pipes of PE80 and PE100 grades should be used for gas transmission; medium or high density polyethylene pipes of PE80 and PE100 grades are usually used for water supply pipes, and PE63 has gradually been eliminated. In terms of water delivery, the fastest growing is PE100 pipeline system, which is expected to grow by more than 10% in the next five years.
Post time: Jul-10-2022
