Go to home depot or lowes. Look in the tool section or ask the clerk for these supplies.
You can buy an inexpensive kit for this. should come with a buffing wheel(s) and polishing compound(s).
You can use a drill to turn the polishing wheel.
I used this kit to polish my old motorcycles frame.
I also used several fine grit sandpaper sheets to smooth things out at first. Then used the wheel with the compound.
At the end I used some mothers polish to clean it up.
It came out to a mirror shine.

If your IC pipes are already smooth, you could probably skip the sandpaper
Good luck