Abstract: A flexible and extendible pipe fitting for plastic pipe comprises a tubular bellows capable of being axially expanded and contracted and an inner lining for laminar fluid flow, where the lining is completely sealed in a fluid impervious manner to the interior ends of the fitting. Rigid hollow conduit end members are attached to opposite axial ends of the tubular bellows for sealably joining with two other pipe sections. An outer sleeve which generally conforms to the manipulation of the bellows is filled with settable material to permanently fix the pipe section in place once the desired configuration has been achieved.