1. Overview of the piping system of steel pipe fittings
In order to transport liquid or gas, various pipes are used. In addition to the steel pipes for straight pipes, various pipe fittings are also used in the pipes: elbows are used when the pipes are turned, and large and small heads are used when the pipes are reduced in diameter. To use a tee, flanges are used when connecting pipe joints and joints. In order to achieve the purpose of opening the conveying medium, various valves are also used. In order to reduce the influence of thermal expansion and contraction or frequent vibration on the pipeline system, expansion In addition, on the pipeline, there are various joints, plugs, etc. that are connected to various instruments and meters. We are accustomed to referring to other accessories in the pipeline system except for straight pipes as pipe fittings.
2. Common knowledge of metal materials for steel pipe fittings:
Metal materials are widely used in our daily life and industry. It is mainly divided into steel, iron, and non-ferrous metals, among which steel is the most widely used material. The main component of steel is iron. , the rests are artificially added alloying elements and various impurities. It is precise because of the different varieties and quantities of these added alloying elements that various steels are formed, such as ordinary carbon steel, stainless steel, alloy steel, etc., Among these added elements, carbon C plays a very important role.