Since there are many kinds of materials and many materials are not commonly used, today we will only talk about several common metal materials. Carbon steel: refers to iron carbon alloy with carbon content of 0.0218%~2.11%. Also called carbon steel. Generally, it also contains a small amount of silicon, manganese, sulfur and phosphorus. Generally, higher carbon content in carbon steel means higher hardness, higher strength, but lower plasticity. In fact, our domestic pipe fittings are generally called carbon steel, such as Q235 20 # and even Q355. This is actually a simple and convenient name, so it is not correct strictly.
Metal pipe fittings, generally referring to elbows, tees, flanges, etc., are used to connect pipes and change the flow direction of medium in pipes. They are indispensable for industries such as industry, construction and shipbuilding. Metal pipe fittings are generally pressure parts, which can be divided into four categories according to different processing technologies, namely butt welding pipe fittings (including welded and non welded), socket welding and threaded pipe fittings, and flange pipe fittings.