The basic prerequisite for achieving good results is thorough preparation. Surfaces must be clean, dry, and free from defective or poorly adhering materials, dust, oils, and salts.
New metal surfaces:
Degrease the surface using THINNER 125 solvent. Prime with ANTIRUST EPOXY, 2 coats
Painted metal surfaces:
Sand the surface, then prime with ANTIRUST EPOXY, 2 coats