Large-diameter flanges commonly include flat welding flanges and butt welding flanges. Threaded flanges do not have large diameters. In the actual production and sales, the proportion of flat welding products is still much. Flat-welded large-diameter flanges and butt-welded large-diameter flanges have different structures and ranges of use, and can exhibit different features and advantages. Therefore, they should be used for different ranges to ensure that flanges play an important role. . Large-diameter flat welding flanges have poor rigidity and are suitable for occasions where the pressure is p≤4MPa; butt welding flanges, also known as high-neck flanges, have high rigidity and are suitable for occasions with high pressure and temperature. There are three types of flange sealing surfaces: flat sealing surface, suitable for occasions where the pressure is not high and the medium is non-toxic; concave and convex sealing surface, suitable for occasions with slightly higher pressure; tongue and groove sealing surface, suitable for flammable and explosive , toxic media and occasions with high pressure. Flanged pipe fittings with different properties have good product performance in different fields, and are suitable for different occasions and spaces, resulting in different effects.
Large-diameter welded flange manufacturers, welded flanges are the parts that connect pipes and pipes, and are connected to the end of the pipe. There are holes on the welded flange, and bolts make the two flanges tightly connected. A disc-shaped part, which is the most common in pipeline engineering. Welding flange (flange) connection is to fix two pipes, pipe fittings or equipment on a weld. Fastened together with bolts to complete the connection. Welding is an important connection method for high-pressure pipeline construction. Welded flange connections are easy to use and can withstand greater pressure.