According to the different materials, the water supply pipes mainly include iron pipes, plastic pipes, aluminum plastic pipes, PE pipes, PP-R pipes, and copper pipes. Iron pipes are easier to rust.
The oxygen permeability and light transmission of plastic pipes are serious.
Aluminum plastic pipe is made of high-density polyethylene sandwiched with aluminum. The melting point of polyethylene is 150 degrees, so it has long-term high temperature resistance, and also has a good light isolation and oxygen barrier effect, and it is mutually supporting the use of As long as the nut fittings and steel sleeve-type pressure fittings can be correctly installed, they are generally safe and reliable.
The material structure of the PE pipe is simple and the expansion coefficient is large, so the performance is inferior to the aluminum plastic pipe.
PP-R pipe is composed of polypropylene, its poor high temperature performance and large expansion coefficient, the use of hot-melt connection process, easy to produce defect area when the push-pull, leading to stress concentration, affect the long-term performance of the pipeline, and local The high temperature easily promotes PP-R degradation and accelerates pipe aging.
Copper is a material with a certain strength and excellent plasticity and toughness in metals, and has excellent low temperature performance. Therefore, copper pipes are not only heat-resistant, fire-resistant, but also not aging, but also have a certain anti-frost performance. Because the copper tube is durable and has a low thermal expansion rate, it is particularly suitable for embedding in a wall, and there is no need to worry about the cracking of the wall. However, the price of copper pipes is more expensive.
2, purchase of water pipe
When purchasing a water supply pipe, first of all pay attention to its own sanitary performance, especially the water pipe, must take into account people's health requirements. Because part of the cleanliness of water depends on the pipeline's impact on water quality.
Second, we must pay attention to whether the pipeline has the effect of resisting the infiltration of oxygen in the outside air into the pipe wall. If the pipeline is infiltrated by oxygen for a long time, then its inside is prone to bacterial growth, thus contaminating the water quality.
Water supply pipe curtain installation method
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