The Wart Millhog Beveller Esco Tool, Holliston, Massachusetts, mounts to the tube I.D. and provides torque-free operation with the ability to bevel, face, bore, and remove overlay to create square end preps in boiler tubes. It only requires 2.625-inches width to fit between tubes for single tube maintenance in a boiler tube waterwall, and is best suited for tube and pipe from 0.75-inches to 4.5-inches.
Esco Tool www.escotool.com