Metal pipes are generally used outdoors, including ordinary steel pipes, water ductile iron pipes, and stainless steel pipes. The cost of stainless steel pipes is relatively high, and they are only used in special occasions, so they are not used in large quantities.
Another reason is that the slight chemical substances contained in the water will cause corrosion to the metal pipes under long-term action. In order to improve the corrosion resistance of ordinary steel pipes, it is necessary to galvanize the general metal pipes, but after several years of use, a large amount of Rust and rust cause the heavy metal content in the water to be too high; the yellow water flowing out not only pollutes the sanitary ware, but also contains bacteria that grow on the rough inner wall, seriously endangering human health.
The advantages of plastic pipes for water supply pipes: clean, hygienic, non-scaling, stable chemical properties, corrosion resistance, easy heat conduction, heat preservation and energy saving, thermal conductivity is only one hundredth of that of metal pipes, light weight, hot-melt connection, overall Easy and fast installation, long service life.
