Used in the central air-conditioning on the copper tube, which brand of copper pipe will be better, more durable?
R410a is a special brass brass central air conditioning, Shanghai Long Yu flywheel R410A copper pipe, copper tube of the air conditioner will, evaluation of their online.
Qingdao Hongtai, Shanghai flywheel, Shanghai gold forgot what, are more formal manufacturers
Hello, each brand for the same diameter of copper pipe, there are different models, the corresponding pipe wall thickness is also different.Copper pipes are usually sold by the tonSo if you want to wear it well, you need to use a thick tube wall, then the corresponding tons of rice can be bought a lot lessSo the cost will be much higher.Common brands are Qingdao, Shanghai Hongtai flywheel, which to choose the extrusion production of copper, good quality
The operation of refrigerant in the central air conditioner determines the use effect directly, so the quality of refrigerant copper tube is very important. The traditional R22 refrigerant (Freon) tube pressure is generally about 20 kilograms, and R410 new refrigerant, the pipe pressure reached 40 kg. Therefore, the central air conditioner that uses new refrigerant needs to choose better refrigerant copper pipe. Note: 410A environmental protection media require copper tube wall thickness to be thick enough.The installation of refrigerant copper tubes is the most important part of the installation process of central air conditioning. 1. All welding points shall be welded at the joint of the copper pipe and the branch pipe. There shall be no welding between the copper tube and the copper pipe. 2, in the welding process, must be in the copper tube into nitrogen (nitrogen welding process), this makes the copper pipe inside the air, avoid welding, so that the inner wall of carbon, so in the formal operation into the compressor and failure. 3. After welding, the high pressure nitrogen shall be used to blow ash in the pipe to keep the copper tube clean.Then nitrogen and pressure, this is the completion of welding must be carried out on the copper pressure test, to the copper tube filled with a certain pressure of nitrogen for holding pressure, the general pressure test time is 24 hours. It should be noted that the use of R410 refrigerant, you need to keep the pressure of 40 kg, R22 refrigerant, you need to keep the pressure of 20 kg. Nitrogen is an inert gas with a small coefficient of expansion. There is almost no change in pressure due to thermal expansion and cold contraction. If there is a decrease in the pressure gauge during the test, check that the refrigerant pipe is welded.
