Abstract: An improved pipe mill is disclosed having two cooling beds and a dual conveyor for delivering cut lengths of pipe from a saw to both beds in two paths, whereby the mill can be operated at very high speeds. A unique selector unit is provided having an oscillating deflector for diverting successive cut lengths of pipe from one conveyor path to the other in timed relation to the operation of the saw and having a special cam actuating unit which can be operated in three different ways to cause delivery of pipe to either one or both of the cooling beds. The cam unit includes a rotating cam wheel having a flat flange at one side and a contoured flange at the opposite side which is engageable with a cam roller or follower to cause reciprocation of the deflector with a dwell at each of its advanced and retracted positions.