Abstract: A fitting for joining pipes, tubes, or conduits improves coupling capability particularly to a large bore pipe, generally of 2 inches and larger in diameter. The fitting includes a substantially cylindrical sleeve and ring. The sleeve has an inner surface defining a bore, configured to slidably receive the pipe at an open end. The inner sleeve surface also includes protrusions, which deform the outer surface of the pipe upon swaging. The fitting also includes an outer surface having multiple stepped lands of ascending height relative to the open end. The ring has an inner surface configured to engage the multiple ascending steps on the inner sleeve surface. The inner surface of the ring has descending steps that are positioned to interfere with the multiple ascending steps on the outside of the sleeve. Axial motion of the ring causes the ring to slide over the sleeve and apply a radial swaging force directly to the multiple stepped sleeve.

Abstract: A swaging tool for use in swaging axially swaged fittings for joining together pipes. The present invention provides a radially balanced axial force, for uniformly pushing a ring of an axially swaged fitting over a sleeve, to swage the fitting to the pipe. The swaging tool of the present invention includes a tubular housing, having an inner surface, which defines a bore. The bore is configured to receive a pipe section having an axially swaged fitting placed thereon in preparation for swaging. Preferably, the housing may be split lengthwise into two opposed sections, such that when the two sections are brought together, the sections completely surround a portion of the pipe section and the fitting. Each housing section is provided a plurality of pusher assemblies, each pusher assembly may preferably be connected to a source of hydraulic pressure, which when activated moves the pusher assembly axially to provide the axial force necessary for swaging the fitting.