According to the specific location and laying method of the pipe, PVC pipe can be flexibly selected. Whether a pipe is used in a certain place depends not only on the characteristics of the pipe itself, but also on factors such as the natural geographical environment, working conditions, resource characteristics, residents' living standards, and socio-economic development status of the area. In addition, the different functions, properties, and standards of buildings also directly affect the selection of pipes. For example, in the southern and northern regions of China, there is a significant difference in freezing depth, outdoor pipeline burial depth, and groundwater conditions. Therefore, the pipes used for the same outdoor pipeline network may be different; There are significant differences in the practical properties between pipes and residential buildings, and the selection of pipes for the same water supply and drainage system may also vary; The concealed and exposed installation of pipelines, overhead and buried pipelines, as well as the temperature and flow rate of the conveying medium, can all result in different selected pipe materials. Pipe fittings and connections are key factors that cannot be ignored in the selection of water supply and drainage pipes. When choosing pipes, people often overlook the performance of pipe fittings, fittings, and accessories. However, due to the large number of molds, high investment, and long production cycles required for pipe fittings, many enterprises are unwilling or difficult to equip the production equipment for pipe fittings, which brings great inconvenience to construction units. Even if other enterprises understand pipe fittings, it is often difficult to match the material selection. Improving the supporting technology for the production of water supply and drainage pipes and pipe fittings is an urgent problem that needs to be solved in China's pipe industry, and it is also a key factor that should not be ignored when choosing. Cost effectiveness is the determining factor in choosing water supply and drainage pipes. When a pipe meets the requirements of its performance, usage location, connection method, etc., price becomes the determining factor in selection. The technical and economic characteristics of pipes are mainly due to the expensive material of the pipe itself. Although it has superior pipe performance, users still hesitate in the face of its high price. Therefore, according to one's own economic strength, choosing pipes with both excellent performance and reasonable prices in the diverse water supply and drainage pipe market is the ideal choice for all material purchasers.