Blast surface preparation
Cleaning of the surface to SSPC-SP 6 "Commercial Blast" or SP 10 "Near White Blast."
Extent to which the steel surface is prepared prior to the coating application; generally identified according to SSPC grades.
Dry film thickness (DFT)
The coating thickness after complete drying.
Hand/Power surface preparation
Cleaning of the surface to SSPC-SP 3 "Power Tool Cleaning" or SP 2 "Hand Tool Cleaning."
Process of applying a zinc coating to fabricated iron or steel material by immersing the material in a bath consisting primarily of molten zinc. The zinc coating provides both barrier and cathodic corrosion protection.
Accomplished by feeding zinc in either wire or powder form into a heated gun, where it is melted and sprayed onto the steel surface using combustion gases and/or auxiliary compressed air to provide the necessary velocity.