Table of Contents

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 General
5 Types of surface to be prepared
6 Surface preparation methods
7 Surface preparation grades
8 Surface profile (roughness) and surface
   profile grading
9 Assessment of prepared surfaces
10 Temporary protection of prepared surfaces
   from corrosion and/or contamination
11 Preparation of temporarily or partly protected
   surfaces before application of further coatings
12 Preparation of hot-dip-galvanized surfaces
13 Preparation of thermally sprayed metal (zinc
   and aluminium) surfaces
14 Preparation of zinc-electroplated and sherardized
   surfaces
15 Preparation of other coated surfaces
16 Recommendations regarding pollution and the
   environment
17 Health and safety
Annex A (normative) - Standard preparation grades
        for primary (overall) surface preparation
Annex B (normative) - Standard preparation grades
        for secondary (partial) surface preparation
Annex C (informative) - Procedures for removal of
        extraneous layers and foreign matter, native
        layers and contaminants
Bibliography

Abstract

This document covers the following types of surfaces of steel structures consisting of carbon or low-alloy steel, and their preparation:— uncoated surfaces;— surfaces thermally sprayed with zinc, aluminium or their alloys;— hot-dip-galvanized surfaces;— zinc-electroplated surfaces;— sherardized surfaces;— surfaces painted with prefabrication primer;— other painted surfaces.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Organization for Standardization
ProductNote	THIS STANDARD ALSO REFERS-ISO 2063 (all parts),ISO 8504 (all parts),ISO 16276 (all parts)
Pages
ISBN
Committee	TC 35
Supersedes	ISO/DIS 12944-4 : 60.00 (2017) ISO 12944-4 : 1998