Abstract: A broken conduit end portion is repaired by reducing its radial wall thickness and attaching thereto a repair coupling that is configured to provide an internal passage therethrough that is not smaller than the internal passages in the broken conduit end portion and in a second conduit that is attached to the repair coupling.

Abstract: Broken conduit is repaired by enlarging the inner diameter at the broken end portion to provide a socket for receiving a coupling that has a male end portion with a reduced radial wall thickness and is configured so that the external diameter of the male end portion is closely received in the socket while the inner diameter thereof corresponds to the original inner diameter of the conduit.

Abstract: A reaming tool for reaming a socket in a broken end portion of a cylindrical conduit enlarges the internal diameter of the broken end portion to provide a socket for receiving a male end portion on a repair coupling. The reaming tool is guided by the inner diameter of the conduit while reaming out the broken end portion to a socket diameter that is about midway between the original internal and outer diameters of the conduit.