Just like the high-rise flats from the same ground, the water supply pipe is an important building decoration material, and the water supply and drainage system affects the building's energy conservation, emission reduction and environmental protection. There are many types of water supply pipes, mainly metal pipes, composite pipes and plastic pipes. With the rapid development of the pipeline industry in China, the specifications of the water supply and pipe industry are increasingly perfect. What are the specifications of the water supply pipes ? The current standards for the production of water supply pipes are mainly British, American, Japanese, International, and national standards (GB ). If you have this need, you may wish to follow me to understand the relevant knowledge of the water pipe specifications , maybe it will help your purchase!
What are the water supply pipes
The development of water supply pipes in China has also undergone a long-term process from relatively low health standards, single variety to multiple varieties, and gradual improvement of health standards. At present, there are various types of water supply pipes for sale on the market, which are classified according to the different places of use. Water supply pipes can be divided into two categories:
(1) Metal tube
Metal water supply pipes mainly include steel pipes and ductile iron pipes, and steel pipes are divided into seamless steel pipes and welded steel pipes. They can be divided into texture type, non-protective layer and protective layer type, thickened steel pipe and ordinary steel according to their anti-corrosion performance. Steel pipe is divided according to the thickness of the pipe wall;
(2) Non-metallic steel pipe
Non-metallic steel pipes mainly include non-metallic lining type steel pipes and non-metallic coating type steel pipes, and these two types of steel pipes are collectively referred to as steel-plastic composite pipes. At present, the largest diameter steel-plastic composite pipe is DN125-DN300. The use of larger pipes outdoors has certain limitations.
Water supply pipe specifications
At present, there are mainly British, American, Japanese, International, and National Standards (GB) for the production of water-pipes, and Chinese manufacturers are more in line with national conditions and have a more stable quality. Therefore, they are mainly based on national standards (GB). produce.
The inner diameter of the pipe is nominally 15mm, and the outer diameter of the water supply pipe with a size of 1/2′′ inch is 22±0.3, and the pipe thickness is 2.0±0.4 (domestic DIN specifications).
The inner diameter of the pipe is nominally 20mm, the size of the water supply pipe with a size of 3/4′′ inch is 26±0.3, and the pipe thickness is 3.0±0.5 (domestic DIN).
The inner diameter of the pipe is nominally 25mm, and the outer diameter of the water supply pipe with a size of 1′′ inch is 32±0.3, and the pipe thickness is 4.0±0.6 (domestic DIN specifications).
The inner diameter of the pipe is nominally 40mm, and the outer diameter of the feed pipe with a size of 1+1/2′′ inch is 50±0.3, and the pipe thickness is 5.3±0.8 (domestic DIN specifications).
The inner diameter of the pipe is nominally 50 mm, the outer diameter of the water supply pipe with a size of 2′′ inch is 63±0.3, and the pipe thickness is 6.0±0.9 (domestic DIN).
The inner diameter of the pipe is nominally 80 mm, the outer diameter of the water supply pipe with a size of 3′′ inch is 90±0.3, and the pipe thickness is 7.3±1.1 (domestic DIN specifications).
The inner diameter of the pipe is nominally 100mm, and the outer diameter of the water supply pipe with a size of 4′′ inch is 110±0.4, and the pipe thickness is 8.0±1.2 (domestic DIN specifications).
The inner diameter of the pipe is nominally 200mm, and the outer diameter of the water supply pipe with a size of 8′′ inch is 225±0.7, and the pipe thickness is 12.0±1.8 (domestic DIN specifications).
The inner diameter of the pipe is nominally 300mm, and the outer diameter of the water supply pipe with a specification of 12′′ inch is 315, and the pipe thickness is 14.0±2.1 (domestic DIN specifications).
Water supply pipe pressure regulations
The pressure of the water supply pipe is expressed as the nominal pressure (Mpa), 1Mpa≈10kg/cm2 is the pressure of the pipe under the condition of the temperature of 20°C, which can reflect the safety ability of the water pipe to withstand the pressure. There are five pressure regulations, respectively. It is 0.6Mpa, 0.8Mpa, 1.0Mpa, 1.25Mpa, 1.6Mpa.
How to choose water supply pipe
1. Generally speaking, the water supply pipes used in houses are galvanized pipes, such as gas pipes and heating pipes. However, galvanized pipes will produce dirt after a certain period of use, and the rust flowing out of water will be yellowish in color and mixed with pipes. Bacteria and heavy metal components that grow in the walls pose a great threat to human health.
2. The most popular water supply pipes on the market today are aluminum-plastic pipes. The well-known brands are Jinde and Rifeng. Because of the lightweight and durable aluminum-plastic tube, it is convenient for construction and is widely used as a pipe for household houses. However, if the aluminum plastic pipe is used as a hot water pipe, the long-term thermal expansion and contraction will cause its pipe wall to become misaligned, causing leakage. This shortcoming makes the aluminum plastic pipe face the risk of being eliminated;
3. As a new type of pipe, PPR pipe uses hot-melt technology, known as "never scaling, never rust, no leakage," not only non-toxic and tasteless, but also light pressure, but also not easy to corrosion, so , Its wide range of uses, not only for hot water pipes, but also for cold water pipes, can also be used as pure water pipes, is widely used in some high-end apartment houses;
4. After installing the water supply pipe, pressure test must be performed on the pipe to test whether the pipe will leak, and do not bury the pipe in the underground, hidden pipe joints.
National standards for water supply pipes
The so-called national standard for water-supply pipe is the industry standard that the state and relevant units have in order to regulate the production behavior of the water-supply pipe production industry in order to promote their standard production and ensure product quality and performance. This is similar to the fact that mountains and mountains have family rules, and there are no rules. The national standards of water supply pipes are mainly regulated by the materials used, specifications, technical requirements, performance, methods of use, and detection rules, and different types of water supply pipes. National standards are different, but they are often similar to similar water supply pipe standards. For example, the current national standard for PE water supply pipes is GB/T13663-2000. This standard is applicable to water supply pipes made of PE63, PE80, and PE100 materials. Consult the manufacturer or related organization about the details of the water supply pipe.
Editor's summary: The above is the water supply pipe specifications which are related to how to choose the relevant knowledge of the water pipe, the size is different according to the actual needs to determine, everyone in the choice of water supply pipe material can refer to today for everyone to introduce the relevant content. For more information, please continue to pay attention to our website, follow-up will show more exciting content.
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