All in the two planes in the periphery of the use of bolt connection at the equal time closed connection parts, oftentimes regarded as "flange", such as the connection of air waft pipe, this kind of elements can be regarded as "flange class parts".
But this connection is totally a section of the equipment, such as the connection of the flange and the water pump, it is now now not right to identify the water pump "flange parts". Relatively small, such as valves, can be acknowledged as "flange parts". Flange connection is an necessary connection mode in pipeline construction. Flange connection is the two pipes, pipe fittings or equipment, respectively regular on a flange plate, between the two flanges, plus flange pad, bolted together to complete the connection. Some pipe fittings and equipment have their very very own flange, moreover belong to the flange connection.