1. Select material
At present, the hot and cold water pipes on the market have copper tube, aluminum plastic pipe, PPR tube, PB tube, pert tube, and so on, each big pipe compared to the most cost-effective is PPR tube, it is a new type of water pipe material, can do both cold water pipe, and can do hot water pipe, and has non-toxic, light weight, pressure, corrosion and other advantages.
2. Select Specifications
According to the national standard gb/t18742 regulation PPR pipeline outside diameter has 20mm, 25mm, 32mm, 40mm, 50mm, 63mm, 75mm, 90mm, 110mm, 160mm 10 kinds of specifications. See so many specifications, we often do not know where to start, but home plumbing generally with 20, 25, 32 is enough. Model there is another way to calculate: 20=4 points, 25=6 points, 32=1 inch, which is what we often say 4 points, 6 points and an inch. Home plumbing mains General choice of 6, that is 25, in charge of the choice of 4 points, that is, the specification of 20, but in order to ensure water flow rate, you can choose 6 in charge.
3. Selected quantity
PPR Pipe is generally 4.1-meter, water electrician to you calculate the length of the pipe used in general to give the total length, so buy the time to convert into the number of water pipes (need to buy the root number = total length ÷4). When you buy, you also need to know that the price is one meter or one price, also pay attention to whether the length of the tubing meets the requirements.