Forged SW Half Coupling
The Socket Weld Half Coupling is a single-socket forged fitting used to create a branch connection on a pipe, vessel wall, tank shell or header. One end features a precision-machined socket weld bore that accepts the branch pipe. The opposite end is a plain face designed for direct butt-welding onto the run pipe or vessel wall, forming a permanent, fully welded branch assembly.
Unlike a full coupling, the half coupling has only one socket, making it the fitting of choice for creating branch nozzles and instrument tapping points on piping systems and pressure vessels. The fitting is also used as a weld-on boss where a threaded or socket-weld instrument connection is required on a vessel or tank nozzle.
All half couplings are forged in one piece, ensuring an integral, full-strength body at the critical socket-to-face junction. The socket bore is machined to ASME B16.11 tolerances and the plain face is machined flat and perpendicular to the socket axis, ready for direct welding.