What is a flange?Flange is a major component for connecting two pipes. Generally speaking, it connects the ends of two pipes through threading or welding. Thus, flanges are classified into two big categories according to attended modes: threaded connection (screwed) flanges and welding flanges. If two pipes are arranged to be connected, a pair of flanges, a gasket and several bolts and nuts are needed to complete the flange joint. At first, put the gasket between two sealing faces. Then, tighten the bolts. When the gasket surface pressure reaches a certain level, it would be deformed to fill the uneven parts of sealing surface to achieve the perfect leak tightness.Mechanical components are indispensable in many mechanical types of equipment. They all cooperate to drive the industrial process to proceed in a smooth pace. Among the great variety of the mechanical fittings, flanges are popular in many situations. Generally speaking, a flange is typically an extension of a structure. It is usually used to increase the strength of a structure, to keep a particular object in place or to combine two parts together.It should be mentioned that these flange pieces should be designed and m...