Abstract: The invention comprises an improved pipe bender for accommodating multiple pipes of varying diameters and sidewall thicknesses and bending sections of them into an arcuate form without deforming or collapsing the sidewalls of the pipe. The pipe bender comprises a mounting base; an axle supported by the mounting base and having end portions that protrude from respective opposite sides of the mounting base; two sheave blocks having arcuate pipe receiving channels, one such sheave block mounted on each protruding end portion of the axle for rotation about the axis of the axle; first and second pipe engaging mechanisms for engaging and holding pipe; and a device for rotating the sheave blocks about the axis of the axle so that a pipe positioned in a pipe receiving channel is bent into an arcuate form corresponding to that of the respective pipe receiving channel.