The copper tube is hard in texture, not easy to corrode, and resistant to high temperature and high pressure. It can be used in a variety of environments. Compared with this, the shortcomings of many other pipes are obvious. For example, the galvanized steel pipes used in residential buildings in the past are very easy to corrode, and problems such as yellowing of the tap water and small water flow will occur after a short period of use. There are also some materials whose strength will decrease rapidly at high temperature, which will cause unsafe hazard when used in hot water tubes. The melting point of copper is as high as 1083℃, and the temperature of the hot water system is negligible for copper tubes.