There are holes on the American standard flanges, bolts make the two flanges tightly connected. The flanges are sealed with gaskets. American standard flanges can be formed by casting, screw connection or welding. American standard flange connection is a detachable connection. It is to fix two pipes, pipe fittings or equipment on a flange plate respectively, add flange pads between the two flange plates, and fasten them together with bolts to complete the connection. American standard flange connection is an important connection method for pipeline construction. The new standard flange connection is easy to use and can withstand greater pressure. Some pipe fittings and equipment have their own flanges, which are also flange connections.

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