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Rust Grades
PICTORIAL STANDARDS
SSPC-Vis 1 / ISO 8501-1
Rust Grade A
Steel surfaces completely covered with adherent mill scale; little or no rust
Rust Grade B
Steel surface covered with mill scale and rust
Rust Grade C
Steel surface completely covered with rust; little or no pitting visible
Rust Grade D
Steel surfaces completely covered with rust; pitting visible
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