International Standard
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
Reference number
ISO 8501-3:2025
Edition 3
2025-08
© ISO 2026
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Published (Edition 3, 2025)

ISO 8501-3:2025

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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 2025-08
    Stage
    : International Standard published [60.60]
  • Edition
     : 3
    Number of pages
     : 13
  • Technical Committee :
    ISO/TC 35/SC 12
    ICS :
    25.220.10 
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

9
Industry, Innovation and Infrastructure
11
Sustainable Cities and Communities
12
Responsible Consumption and Production

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