Type Of Piping Flanges
There are many types of pipe flanges available and used accordingly to its application. Most commonly types are mentioned below.  1. Slip On Flanges Orifice Flange Socket Weld Flanges Screwed & Threaded Flanges Weld neck Flanges Square Flange Lap Joint Flanges Weldo Flange Blind Flanges Nippo Flange Spectacle Blind Flanges Plate Flange Spade and Ring Spacer Flange.
Pipe Flange is used to connect two different pipe, piping accessories like strainers, valves, or equipment nozzles like pumps, vessels, compressors, etc to each other for build a complete pipeline system. This is a circular plate with a set of small and big holes. The big hole is equally size to pipe OD, and the small holes are use for bolts and numbers of bolt holes on the pipe flange will be according to ASME B16.5 and ASME B.16.47.
There are two methods to connect pipe to pipe and pipe to equipment that is by the direct welding with pipe and equipment or by the help of flanges at both ends and then tighten with a nut bolt before tightening the flange and placing the gasket between both flanges. By connecting with the flange, three things are required that is flanges, nut bolts and gaskets. These are provide leak prof piping system.
There are some advantages and disadvantages of flanges connection.
