You have to look close at the third pic all along the weld and all over are small spots of rust and they are only about 5 months old(last october/november
WOW. That is bad. I have black CFRs. Have had them on my bike for almost a year. No rust at all. You must have gotten a bad set of pipes. Where did you get them from? Hopefully they will exchange them for a new set.
Good luck.