Basic shape of stainless steel flanges

　　A flange is also known as a flange or flange. A flange is a component that connects pipes to each other and is connected to the end of the pipe. There are holes on the flange, and bolts make the two flanges tightly connected. The flanges are sealed with gaskets, and the flanges are divided into threaded (threaded) flanges and welded flanges.

　　The basic shape of a stainless steel flange is the same as a flat welded flange with a neck, that is, there is a socket hole on the inner hole of the flange, the pipe is inserted into the socket hole and welded, and a weld seam is welded on the back of the flange. Due to the gap between the socket stainless steel flange and the groove, corrosion is prone to occur. If another weld is welded inside, this corrosion can be avoided. The fatigue strength of socket flanges welded on both sides is 5% greater than that of welded flat flanges, while the static strength is the same. The inner diameter of the socket flange must be consistent with the inner diameter of the pipe. Socket flanges are only suitable for pipes with a nominal diameter of 150 or less. The commonly used materials for socket stainless steel flanges include: 201 304 316 304L 316.

　　Welded threaded stainless steel flanges are forged and can also be formed by threaded connections or welding. It consists of a pair of threaded flanges, a gasket, and several bolts and nuts. The gasket is placed between two flange sealing surfaces, and after tightening the nut, the specific pressure on the gasket surface reaches a certain value, causing deformation. The uneven areas on the sealing surface are filled to ensure a tight connection without leakage. Some pipe fittings and equipment already come with their own flanges, which also belong to flange connections. Flange connection is an important connection method in pipeline construction.

　　The threaded stainless steel flange connection is convenient to use and can withstand large pressures. In industrial pipelines, flange connections are widely used. Simply put, the function of welding socket stainless steel flanges is to fix and seal the connection of pipe fittings. Stainless steel threaded flanges are used to connect pipelines and maintain their sealing performance, facilitating the replacement of a certain section of pipeline, dismantling and inspecting the condition of the pipeline, and facilitating the sealing of a certain section of pipeline.