Pipe fittings are the general term for components in a piping system that are used for connection, control, direction change, diversion, sealing and support. According to the connection method, it can be divided into four categories: socket fittings, threaded fittings, flange fittings and welded fittings. It is made of the same material as the pipe. There are elbows, flanges, tees, crosses (crossheads) and reducers (large and small heads). Elbow is used for the rotation of the pipe; flange is used to connect the pipe and the pipe to the pipe end, the tee is used for the place where three pipes are collected, the cross is used for the place where the four pipes are collected, and the reducer is used to connect two different pipes diameter tube. At present, China is already the world's largest producer and consumer of building materials. Over the years, major building materials products such as cement, flat glass, building sanitary ceramics, stone and wall materials have ranked first in the world. At the same time, the quality of building materials continues to improve, and the consumption of energy and raw materials decreases year by year. Building materials are constantly emerging, and building materials are constantly being upgraded. At the same time, under the background of building an energy-saving society and enhancing the country's independent innovation capability, the theme of energy-saving and technological innovation will become a hot spot in the development of the industry.
