Large diameter flanges can be divided into small flanges, medium flanges, and large flanges according to their size. According to the connection type, it can be divided into: plate type flat welding large diameter flange, ribbed flat welding flange, butt welding flange, socket welding flange, threaded connection large diameter flange, and so on. Here, we will focus on introducing the production process and use of large flanges.
Large diameter flange is a type of flange that is widely used and promoted in the mechanical industry, and has received praise and favor from users. Large diameter flanges have a wide range of applications, and their range of use is determined based on different characteristics. They are often used in situations where the medium conditions are relatively mild, such as low-pressure non purified compressed air and low-pressure circulating water. Its advantage is that it is relatively inexpensive. Rolled flanges are suitable for connecting steel pipes with a nominal pressure not exceeding 2.5MPa. The sealing surface of rolled flanges can be made into three types: smooth, concave convex, and tenon groove. Smooth rolled flanges are widely used, and the other two types of rolled flanges are also common in use. Rolled flanges include many types and models. Butt welded steel flanges are used for the welding of flanges and pipes. They are mainly used in welding technology and exhibit good usage characteristics and performance. They have a reasonable structure, high strength and stiffness, can withstand high temperature and high pressure, repeated bending, and temperature fluctuations, and have reliable sealing performance. Rolled flanges with a nominal pressure of 0.25-2.5MPa use a concave convex sealing surface. The main application environment for rolled flanges is suitable and needs to be determined based on specific circumstances to ensure the specific value and performance of large-diameter flanges and withstand high temperature and pressure.
Large rolled large diameter flange is cut into Flat noodles with medium plate, then rolled into a circle, and then processed into waterline, bolt hole, etc. This is usually a large flange, which can be up to 7 meters in size. This type of flange has good quality assurance. Because the raw material is medium plate with good density. The materials include carbon steel, stainless steel, alloy steel, etc.