General household water pipe specifications are: DN15 (4-point pipe), DN20 (6-point pipe), DN25 (1-inch pipe), DN32 (1-inch 2-pipe), DN40 (1 ?-inch pipe), DN50 (2-inch pipe), DN65 (2 ?-inch pipe), DN80 (3-inch pipe), DN100 (4-inch pipe), DN125 (5-inch pipe), DN150 (6-inch pipe), DN200 (8-inch pipe), DN250 (10-inch pipe) and so on. ), DN200 (8-inch pipe), DN250 (10-inch pipe) and so on.
The water pipe Φ25×1/2 means that its outer diameter is 25. the actual corresponding nominal diameter is DN20 (that is, it is often said that 6 minutes of pipe). You can go for a 6-point faucet. You can also go for a 4-point faucet (just add a reducer between the pipe and the faucet).
The styles and materials of faucets for home use are ever-changing, but the fillet part of their connection to the pipe is sized according to 4-points, 6-points, 1-inch, and so on. Don't worry about buying the wrong one.
Often said 4 minutes of pipe is by inches, so 4 minutes of pipe is 1/2 inch (4/8 = 1/2), and an inch = 25.4mm, so the inner diameter of the 4 minutes of pipe is 25.4/2 = 12.7mm, and this is usually said to be the inner diameter of DN15 water pipe.
4 points is the British system pipe diameter length called, that is, 1/2 inch is equal to the metric system of 15mm.
1 inch is equal to 8 points, together with the metric system of 25.4mm.
6 points = 3/4 inches = 20mm.
4 points = 1/2 inches = 15mm.
Additionally remember that the pipeline are calculated in terms of the inner diameter, but the threads of the pipe are threaded with the inner diameter. Pipelines are all calculated in terms of the medium diameter of the wire threads, expressed in terms of the through diameter DN, the threads are divided into metric M and imperial G. Pipeline threads are generally in imperial, the thread angle is 55 degrees . Metric system is 60 degrees.
Extended information:
Metallic pipe galvanized pipe as a p>Metal pipe galvanized pipe as a water pipe, after a few years of use, the pipe produces a large amount of rust scale, outflow of yellow water not only contaminated sanitary ware, and intermingled with unsmooth inner wall breeding bacteria, rust corrosion caused by the water is too high in the content of heavy metals, a serious health hazard (the country has come out of the regulations prohibited when drinking water pipe).
Copper pipe with corrosion resistance, bacteria and other advantages, is the top of the water pipe, copper pipe interface with ferrule, welding and self-locking spring type connection. Ferrules long time there is aging leakage problems, welding is the use of hot melt process, the two connectors fusion, to achieve the effect of connection. Connection strength is high, the weld gas protection of the field welding port is difficult to meet the standard, resulting in welds easy to rust, directly reducing the service life of the pipeline; the quality of the installation of the welders technical dependence on the quality of difficult to stabilize.
Operation is simple and convenient, construction workers only need to familiarize themselves with its operational requirements, a little practice can be mastered. Connection, the tube cut end should be perpendicular to the tube axis, the burr inside and outside of the cut should be cleaned up, and use a marker pen on the outside of the front end of the copper tube to mark the depth of the need to be inserted, and then force the copper tube inserted into the pipe fittings in the end to the pipe stop can be. Low installation risk, suitable for a variety of installation environments, reusable, environmentally friendly and energy-saving; non-leakage, shockproof, anti-thermal expansion and contraction, safe to use, durable and reliable.
One of the drawbacks of copper pipe is that it conducts heat quickly, so famous copper pipe manufacturers produce hot water pipe outside are covered with plastic and foaming agent to prevent heat distribution. Another disadvantage of copper pipe is that it is expensive. Soldering is much more expensive to construct, and few home renovations use soldered copper pipes.
Stainless steel is safe, hygienic, healthy, durable, eliminates the problem of pollution from plastic piping, and saves a lot of money over copper, making it the preferred plumbing material.
Stainless steel is not only used in medical, food, beverage, petrochemical and our home tableware, teapot, but also can be implanted in the human body, such as artificial steel skeleton, artificial teeth. After decades of application proved that stainless steel material has excellent corrosion resistance, hygiene, no rust, no scaling, no seepage put foreign matter, good self-cleaning, long service life, environmental protection, can be 100 percent recycling.
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