Rust Grades
BS 7079 Pt A, ISO 8501, SS 05 59 00
- Preparation of steel substrate before application of paints and related products.
Rust Grade A -
Rust Grade B -
Rust Grade C -
Rust Grade D -
- Steel surface largely covered with adherent millscale with little if any rust.
- Steel surface, which has begun to rust and from which the millscale has begun to flake.
- Steel surface on which the millscale has rusted away or from which it can be scraped, but with slight pitting visible under normal vision.
- Steel surface on which the millscale has rusted away and on which general pitting is visible under normal vision.
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