| abstract |
(A) a welded epoxy layer, and (b) a spray-drying protective powder coating layer disposed on at least a portion of the upper surface of the welded epoxy layer (a), wherein the powder coating is cured and the welded epoxy layer At least a two-layer protective coating system comprising a spray-dried protective powder coating layer forming a protective coating on at least a portion thereof; a method for preparing the two-layer protective coating system; A method for producing a coated article, such as a coated metal tube, using a substrate such as a metal tube coated with the system; as well as the two-layer protective coating system described above. [Selection] Figure 1 |