A Fitting is 1) a suitable or right under the particular circumstances; 2) a small part device used for connecting elements in fluid lines such as a flange, elbow, tee, nipple, and union, etc., that is attached or connected two or more larger parties for any machine part, piping or tubing.
Reference Definition by Wermac.org: A pipe Fitting is defined as a part used in a piping system, for changing direction, branching or for change of pipe diameter, and which is mechanically joined to the system. There are many different types of fittings and they are the same in all sizes and schedules as the pipe.
Related Definitions in the Project: The Piping and Pipeline Engineering
