Water pipes for residential decoration are mainly divided into
PPR pipe: It is also a kind of pipe that is currently sold in the market.
PPR pipe can be used as a cold pipe or a hot water pipe. The advantages are environmental protection and sanitation, cheap, domestic PPR prices are slightly more expensive, the disadvantage is that construction requires professionals, hot melt technology requirements are high, otherwise it is easy to stay Hidden danger. In addition, the performance of domestic PPR raw materials and imported materials (only those imported from Nordic Chemicals are in line with international standards for PP materials) have huge differences in raw materials, and long-term performance needs to be verified (according to an article written by officials of the Ministry of Construction). There are too many brands, mixed good and bad, and uneven quality.
Galvanized pipe: Most of the old houses used galvanized pipes. Now the iron pipes used for gas and heating are also galvanized pipes. Galvanized pipes are used as water pipes. After several years of use, a large amount of rust is generated in the pipes and flows out. Not only does yellow water pollute sanitary ware, but it is also mixed with bacteria that grow on the non-smooth inner wall. The rust causes excessively high levels of heavy metals in the water, which seriously endangers human health. In the 1960s and 1970s, developed countries in the world began to develop new types of pipes and banned galvanized pipes one after another. China's Ministry of Construction and other four ministries also issued a document explicitly banning galvanized pipes from 2000. At present, galvanized pipes are rarely used for cold water pipes in newly built communities, and galvanized pipes are used for hot water pipes in some communities.
Aluminum-plastic pipe: Aluminum-plastic composite pipe is a more popular pipe material on the market. Due to its moderate price, light weight, durable and convenient construction, its flexibility is more suitable for home use. In addition, the amount of indoor gas pipeline applications has also increased year by year, and it is one of the new chemical pipe materials recommended by the Ministry of Construction. The disadvantage is that it is easy to age. The aluminum-plastic pipe is a card sleeve connection. As a hot water pipe, after the thermal expansion and contraction, the interface is prone to leakage. Many brands of pipes and fittings are not matched with the same factory and have certain hidden dangers. There are also many miscellaneous brands of aluminum-plastic pipes on the market with varying quality.
UPVC pipe: In fact, it is a kind of plastic pipe. The joint is generally bonded with glue. The UPVC pipe is not good in freezing resistance and heat resistance, so it is difficult to use it as a hot water pipe. Due to its strength, it cannot be used for water pipe bearing. Pressure, so cold water pipes are rarely used. In most cases, PVC pipes are suitable for electrical and sewage pipes. In addition, in recent years, the scientific and technological community has discovered that the chemical additive phthalate, which can make PVC softer, has a great impact on the kidneys, liver, and testicles of the human body, can cause cancer, kidney damage, damage the human body's functional reconstruction system, and affect development. So it is recommended that you do not buy.
Copper pipe: Copper pipe has the advantages of corrosion resistance, sterilization, etc. It is the first-class product in water pipes. There are two types of copper pipe interfaces: ferrules and welding. Ferrules have problems of aging and leakage for a long time, so in Shanghai and other places Most of the users who install copper pipes use welding. Welding is the welding of the interface by oxygen. This can be the same as PPR water pipes and never leak. I heard that the copper ions washed out by copper pipes are good for the human body: P One of the disadvantages of copper pipes is that they conduct heat quickly, so some hot water pipes produced by some copper pipe manufacturers are covered with plastics and foaming agents to prevent heat emission. Another disadvantage of copper pipes is that they are expensive and there are very few water supply systems in the community. It's made of copper. I'm afraid it can only be seen in export apartments and high-end villas. If you plan to change the water pipe and you think the copper pipe is good, it is recommended to use a welded interface. Copper pipe is recommended for Baoyang copper pipe.