For use on thicker pipes, there is a pipecutter with a sharp wheel and adjustable jaw grips.
[1] They are also used to quietly remove the catalytic converters off of cars and trucks of any kind, because of their precious metals.
In the situations where they work, they are generally accepted to leave cleaner cuts on the outer surface of the tube.
This burr should be cleaned or reamed when cutting electrical conduit to prevent stripping of the insulating coating from the wires.
In fluid handling applications, the burr should also be removed, as it can restrict the flow and cause turbulence.