Boiler Tube EB Beveler The E.H. Wachs EB Beveler (Excavation Beveler) is a specialized machine tool designed for weld excavation, which is removing dissimilar welds used to join different metals in boiler tube applications. As these welds degrade over time, they need to be removed (excavated) without sacrificing the base materials. The Wachs EB O.D. mounts on 1.75” to 2.25” (44.4-57.1mm) tubes, and requires only a 2” (50.8mm) radial clearance. Also used for cutting and beveling, this model is pneumatic drive only and available by special order.