Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
Threaded Flanges are used for special circumstances with their main advantage being that they can be attached to the pipe without welding....
Socket Welding flanges were initially developed for use on small-size high pressure piping. Their static strength is equal to Slip On flanges,...
The calculated strength from a Slip On flange under internal pressure is of the order of two-thirds that of Welding Neck flanges, and their life...
Lap Joint Flanges have all the same common dimensions as any other flange named on this page however it does not have a raised face, they used in...
Plate Flanges are manufactured without any neck, the welding end is flat, they are used for connecting lower pressure equipments or pipes.
Blind Flanges are manufactured without a bore and used to blank off the ends of piping, Valves and pressure vessel openings.