I. Overview of the piping system of steel pipe fittings

In order to transport liquids or gases, various pipes must be used. In addition to the steel pipes used for straight pipes, various pipe fittings are also required: When the pipe is bent, elbows are used, and when the pipe is tapered, the size of the pipe is used. To use the tee, the flange of the pipe joint should be connected with the joint. In order to achieve the purpose of opening the conveying medium, various valves are also needed. In order to reduce the influence of thermal expansion or contraction or frequent vibration on the pipeline system, expansion is also required. In addition, in the pipeline, there are various joints and plugs connected to various instruments. We are used to collectively refer to components other than straight pipes in piping systems as pipe fittings.

Second, the common sense of metal materials for steel pipe fittings:

Metal materials are widely used in our daily life and industry. They are mainly divided into steel, iron and non-ferrous metals, and the steel is more commonly used. The main component of steel is iron. The rest are artificially added alloying elements and various impurities. It is precisely because of the variety of these added alloying elements. A variety of steels are formed in different quantities, such as ordinary carbon steel, stainless steel, alloy steel, etc. Among these added elements, carbon C plays a very important role.