If it is peeling, it is NOT powder coated. Powder Coating is some of the BEST and most DURABLE coatings known.
AS far as having these PC'd.....Forget it!!!!
PC is a process that entails a specific preparation of a raw metal. Then the said metal is hooked up to an electrical charge which causes the sprayed or manually applied powder to ionicly bond to the metal.
Then the product is baked in a static or conveyor oven for about an hour.
The finish is pretty darn tough.
http://www.youtube.com/watch?v=haCU69C0S3M&NR=1