Short-pattern stub end

A short-pattern stub end is welded to the pipe and works with a loose backing flange to provide the process-contacting section and seating face of a lap-joint assembly. Short pattern distinguishes its specified body length from the long pattern; it is not an automatic synonym for stub-end Type A, B, or C. The shorter length can affect backing-flange clearance and access for welding or inspection. Selection must coordinate backing-flange dimensions, lap profile, gasket, material, end wall, assembly method, and project inspection requirements.