Flame Spray Powder Coating System for sale. This equipment was used to powder coat large and small items, that were not cost effective to powder coat in small quantities. Flame spray is a process that uses an oxy-fuel flame to melt powders. The molten material is then atomised with compressed air to create a spray stream that applies the coating onto the surface being sprayed. Anti-corrosion coatings are typically applied with oxy-propane systems