Unprepared painted steel surface

WJ-4

All loose rust, loose mill scale and loose coatings uniformly removed

WJ-3

Cleaned to a matte finish with at least two-thirda of the surface free of all visible residues (except mill scale), and the remaining one-third containing only randomly dispersed stains of previously existing rust, coatings and foreign matter

WJ-2

Cleaned to a matte finish with at least %95 of the surface area free of all previously existing visible residues and the remaining %5 containing only randomly dispersed stains of rust, coatings and foreign matter

WJ-1

Free of all previously existing visible rust, coatings, mill scale, and foreign matter with a matte metal finish