AENOR UNE-EN ISO 8501-4 Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 4: Initial surface conditions, preparation grades and flash rust grades in connection with high-pre
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![AENOR UNE-EN 10325 Steel - Determination of yield strength increase by the effect of heat treatment [Bake-Hardening-Index]](/bitrix/templates/amt_v3_ozer_n/images/img-1.jpg)




