Ship法兰

Flange, also known as a flange disc or boss, is a component used for connecting shafts or for joining pipe ends. It is also used on equipment for connecting two devices, such as a reducer flange. A flange connection or flange joint refers to a removable connection that consists of a flange, a gasket, and bolts, forming a combination seal structure. Pipe flanges are flanges used for piping in pipeline installations, or refer to the inlet and outlet flanges on equipment. Flanges have holes, and bolts secure them tightly. They are sealed with a gasket. Flanges come in threaded (screwed) connections,焊接 (welded) flanges, and clamp flanges. Flanges are always used in pairs; low-pressure pipelines can use threaded flanges, while those above four kilograms of pressure use welded flanges. Two flange discs are joined with a sealing pad and then secured with bolts. Flanges of different pressures have different thicknesses and require different bolts. In the case of pumps and valves, when connected to pipes, these equipment parts are also made in corresponding flange shapes, also known as flange connections. Any connection piece that uses bolts to connect two flat surfaces and is sealed is generally called a "flange," such as the connection of ventilation pipes. Such parts can be referred to as "flange-type parts." However, this type of connection is only a part of a device, like the connection between a flange and a pump, so it's not appropriate to call the pump a "flange-type part." Smaller items like valves can be called "flange-type parts."