20 # steel flange

Large flanges refer to flanges that exceed the dimensions specified by relevant national departments Generally refers to flanges with a size of DN2000 or above The production of such flanges requires the construction party to provide drawings for production There are two production processes: forging and rolling The materials include stainless steel, carbon steel, and alloy steel
Large flanges are widely used as sealing and fastening connectors in large containers in aerospace, petroleum, chemical and other fields Although not considering the issue of processing capacity, for large flanges, due to their large size, it is impossible to process them as a whole solely due to transportation reasons, and they must be processed in sections
Large flange connections are easy to use and can withstand high pressure, playing an important role and value in use Large flange connections are widely used in industrial pipelines and have different meanings and functions in industry In the home, the diameter of the pipeline is small and it is low-pressure, so flange connections cannot be seen If there are large flange connected pipelines and equipment everywhere in a boiler room or production site
The term "large flange" is a foreign term mainly used for connections and is a common mechanical component. The scope of flanges is very wide, and there are many forms besides pipeline connections In mechanical box sealing, a large flange surface needs to be made on the opening surface, closed with a machine cover opening surface, fastened with threads, and of course, sealed A typical example is a gear reducer, where several shafts are inserted through holes drilled in the box wall, and then the holes need to be closed with a box cover. The end faces of the holes are made with flange faces (threaded holes) and connected to the box cover with screws The chassis cover and chassis body, such as the engine cylinder head and cylinder block, are also connected by flange and screw fastening, with mesh gaskets placed in the middle, called cylinder gaskets Some sheet metal parts also need to be flanged, including welding, riveting, screwing, or purely for pressing and positioning during deep drawing to increase strength