Steel structures, welding & corrosion protection · ISO
ISO 8501-1 – ISO 8501-1 – Preparation of steel substrates before paint (rust and cleanliness grades)
ISO 8501-1 – Chuẩn bị bề mặt thép trước khi sơn (cấp độ làm sạch Sa)
In the international standards catalogue: ISO 8501-1:2007 – current edition 2007
Overview
Rust grades A–D and blast-cleaning grades Sa 1, Sa 2, Sa 2½, Sa 3.
Why it matters for traders
Usually specified in paint specifications (e.g. Sa 2½).
No PDF attached – see the official page. Many standards (ISO, EN, ASTM, AWS, ICC) are copyrighted by their publishers.