[Schonyenko2]

Are you looking to have something done, or is this something that someone told you that you needed, or someone is telling you they had this done?
Descaling needles might be what was described by the gentleman who said it might be an air hammer operation. Wet wheel I've not heard of either.
I guess I believe that a sand, or glass bead blasting on a frame/chassis is a pretty reliable/cost effective process.
Sikkens makes good high end paint products. We usually use Evercoat fillers, and start over dplf90 ppg epoxy primer. We've never found anything that works better over bare metal. Top coats are Sikkens or Dupont, depending on the color.
As a rep for Sikkens, do you ever get in the Quad cities area? Arnold's collision shop, where we shoot our cars, and Just bad Joe paints is a Sikkens shop.