I wanted to scream !!! WE sandblast with 120 grit shot, then do a 3 stage phophate wash with a anti/rust sealer . If needed we then epoxy powdercoat prime. Then we would apply the powder topcoat.
I was embarrassed by the way they powdercoated that Impala frame. It is not the way we do it.
www.extremepowdercoating.net new wedsite launches Friday. There will be many pictures of the correct way of powdercoating.