Tube ends such as those of boiler tube banks, are prepared utilizing any of
various combinations of processes which include a step of micro-diameter tube film
removal from a portion of a tube end, including an area below a beveled segment,
or segment to be beveled. The micro-diameter film removal step provides the tube
with an exposed, clean metal surface which is conducive to a subsequent welding
or bonding operation performed on the tube. Preferably, the process is performed
with a tube milling tool having interchangeable milling or cutting heads. A specialized
milling head is also disclosed and, in one embodiment, is at least used to perform
the micro-diameter tube film removal step. Advantageously, the tube film removal
milling head also removes a weld overlay on one or both sides of a tube in one
embodiment. The tube film removal milling head includes an attached blade having
a planar face configuration which enables tube film removal.