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ISO 8501-3:2025

Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 3: Preparation grades of welds, edges and other areas with surface imperfections
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This document provides requirements to identify visible imperfections and defines three preparation grades for welds, edges and surfaces of steel to assist in achieving efficient corrosion protection. Such imperfections can be visible before or can become visible after an abrasive blast cleaning process.

NOTE       Although this document has been developed specifically for preparation of steel, the defined preparation grades will generally be appropriate for use when preparing other metal surfaces e.g. aluminium, castings, if agreed.

SDO ISO: International Organization for Standardization
Document Number ISO 8501
Publication Date Aug. 1, 2025
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/TC 35/SC 12
Publish Date Document Id Type View
Aug. 1, 2025 ISO 8501-3:2025 Revision
March 1, 2006 ISO 8501-3:2006 Revision