Flanges have excellent comprehensive performance and are widely used in engineering fields such as chemical, construction, water supply and drainage, petroleum, light and heavy industries, refrigeration, sanitation, plumbing, fire protection, power, aerospace, shipbuilding, etc., But their functions are different. Let's start with a brief description of the neck flange.
It is a pipe fitting product classified according to the connection method with the pipeline. Generally, it can be divided into neck flat welding flanges, neck butt welding flanges, socket flanges, etc. The sealing surface of this flange has various forms such as protrusion, concavity, and full flat surface. So what are the applications of neck flanges in daily life? Today, I would like to introduce to you the role of neck flanges in our daily lives, to help you better understand neck flange products. To talk about the use of neck flanges, first understand the advantages of neck flanges. Neck welding flanges improve the strength and load-bearing capacity of flanges, and are commonly used in high-pressure pipelines.
The advantage of welding flanges with necks is to connect pipelines and maintain their sealing performance. Replacing a section of pipeline is more convenient. Easy to disassemble and inspect the condition of pipelines. Close a section of the convenience pipeline. Neck flange is commonly used for material replacement during connection. Steel rings and other flanges are placed at the pipe end, and the flange can be moved at the pipe end. Steel rings or flanges are sealing surfaces, and the function of flanges is to compress them. A flat welding flange with a neck is a movable flange that is typically matched with plumbing fittings (the most common on expansion joints). When the manufacturer leaves the factory, both ends of the expansion joint have a flange that directly connects to the pipes and equipment in the project.
There are various types and models of butt welded flanges. Welded steel flanges are used for butt welding flanges and pipelines. Mainly used for welding processes. It has good usage characteristics and performance, reasonable structure, high strength and stiffness. It needs to be determined based on specific circumstances to ensure the ratio and performance of the welded flange, and to withstand high temperature and high pressure. Widely applicable, determine the scope of use based on different characteristics. It is mainly used under medium medium conditions, such as low-pressure unpurified compressed air and low-pressure circulating water. Its advantage is that the price is relatively low. Suitable for steel pipe connections with a nominal pressure not exceeding 2.5 MPa, the sealing surface of welded flanges can be divided into smooth, concave convex, and mortise and tenon types. The most commonly used method is flat welding flange, and the other two methods of butt welding flange are also commonly used.
Welding flanges can withstand high temperature, high pressure, repeated bending, and temperature fluctuations, and have reliable sealing performance. The butt welding flange with a nominal pressure of 0.25~2.5 MPa adopts a concave convex sealing surface, which is mainly suitable for the environment.
