The selection of new pipes for indoor water supply in buildings should not only ensure safety performance, but also meet economic requirements. In the process of pipe procurement, a comparative analysis of pipe prices and installation costs should be carried out. For example, thinner pipes are cheaper, but more expensive for joint installation. Some plastic pipes with large diameters have thicker walls, and the price per meter after conversion is greater than the price of copper pipes. Therefore, the selection of pipe materials will have a certain impact on the economy and safety of the installation of indoor water supply pipes in buildings. For indoor water supply and drainage projects of the same scale, the cost of different pipes used will also vary.
