Often used to increase strength or spread the load, a flange is a protruding ridge or rim. Sectional beams, for instance, usually have flanges on the end that carry most of the load and that are joined together by a web that joins the flanges together. Often, pipes...
Typical slip on flanges is designed to accept pipe into the bore/center of the flange slip on to allow welding both on the outside diameter (OD) of the pipe and on the interior side of the connection. You may recognize them: Because the slip-on flange welding do not...