Abstract: A pipe reinforcing device includes a tubular connecting member with a pair of internal threads at opposite ends thereof, and a pair of sleeves extending outwardly from the internal threads. The sleeves have a slightly larger inner diameter than the threads. Pipes are inserted into the sleeves, and screwed into the threads. The sleeves extend substantially beyond the external threads on the pipes and completely enclose them. When the pipes are deflected, stress on their external threads is relieved by the sleeves, so that the pipes are prevented from fracturing at the external threads. In a second embodiment, U-shaped sleeves are attached to the adjacent ends of a pair of pipes joined by a conventional connector. A connecting member is positioned against the pipes opposite the sleeves. The sleeves are secured to the connecting member by bolts.