wheel space flange

A flange is an external or internal , or (lip), for , as the flange of an or ; or for a guide, as the flange of a ; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc, or on the of a . Thus a flanged rail is a rail with a flange on one side to keep wheels, etc., from running off. The term "flange" is also used for a kind of tool used to form flanges.