Any of the welders hd\ere know of something to clean or remove discoloration from welded area? Hopefully some hard rubbing and maybe polishing wheel will get them done. Suggestions?

Working on a set of SS headers for my 69 Panel since seems most all have a issue of some kind. Upside is can do a step set(did not say step tuned just HAWAG at steps) And choose cleector i waant
Would like to clean welds as I go to eliminate butt load of work once welded up.