OD Tracking Modules are the perfect solution to counter out-of-round conditions of pipe. Manufacturing, shipping and storage can cause pipes to be considerably misshaped. Machinery that mounts on the ID or OD surface of the pipe has a fixed axis of rotation. This leads to non-uniform weld prep profiles as measured around the circumference of the pipe end after cutting. The OD Tracking module utilizes a spring loaded tracking wheel that “reads” the surface distance from the rotational centerline of mounting and rotation. In this way the weld profile dimensions follow the pipe shape for proper prep geometry.