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Because the water supply pipe is delivered with drinking water or even drinking water directly, the quality of the product will be qualified or not, and the quality of the material will be directly affected by people's health. Galvanized steel tubes inevitably contain zinc components in their production process. During use, the zinc molecules in the galvanized layer will be free in the water and accumulate in the human body, causing greater harm to the human body. With the development of science and technology and improvement of people’s living standards, it is imperative to use environmentally-friendly plastic water supply pipes instead of galvanized steel pipes.
In recent years, environmental-friendly water supply pipes have undergone significant development in terms of both material and quality. The main varieties are: U-PVC pipes, PEX pipes, and chlorinated PVC pipes. , Aluminum-plastic composite PE-AL-PE pipe, steel-plastic composite pipe, random copolymer polypropylene PPR pipe and polybutylene (PB) pipe and other types.
U-PVC pipe is used as an early water supply pipe, and the pipe and pipe are bonded together. During use, especially when used as a hot water pipe, not only will U-PVC monomer and additives ooze out, but also the glue used. It contains substances that are harmful to the human body and is therefore less used. PE-AL-PE pipe is actually equivalent to thin-walled aluminum pipe inside and outside "plating" with a layer of polyethylene; steel-plastic composite pipe is a composite pipe in the inner wall of a certain thickness of the plastic layer, containing plastic-lined steel pipe and coated steel Two tubes; PEX tube is extruded from polyethylene. These kinds of pipes all have strong hardness and require mechanical connection. Therefore, the connection at the joints directly affects the construction quality of the pipes. PP-R pipe is an environment-friendly pipe material developed in the mid-1990s. It is made by extruding modified polypropylene and has excellent heat resistance, high strength, and low production cost. This kind of pipe adopts hot melt connection, the construction process is simple, and the construction quality is easily guaranteed. The current market is widely used. The physical properties of PB tubes are superior to the above several types of tubes. However, due to the high price of polybutene as raw materials, the scope of use is greatly limited. Currently, the use of hot water supply and burying in middle-to-high end residential buildings is relatively large.
Article from Jiangsu Pilsa Pipe Industry Co., Ltd.), please indicate the source
Environmental protection plastic pipe characteristics and development status
Compared with galvanized steel pipes, environmental-friendly plastic pipe feed pipes are favored by people because of their advantages such as being harmless to the human body, corrosion resistance, and small thermal conductivity. The following describes the characteristics and development of the environment-friendly plastic pipe.