Standard
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AS/NZS 4680:2025
[Current]Hot dip galvanized coatings on fabricated iron and steel articles - Specifications and test methods
AS/NZS 4680:2025 specifies the general properties and test methods for hot dip galvanized coatings applied by dipping fabricated iron and steel articles in a zinc melt.
Published: 27/06/2025
Pages: 25
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
2 General requirements
2.1 General
2.2 Hot dip galvanizing bath
2.3 Test certificates and technical information exchange
2.4 Safety
3 Acceptance inspection and sampling
4 Galvanized coating properties
4.1 Appearance
4.2 Thickness
4.2.1 General
4.2.2 Test methods
4.2.3 Reference areas
4.3 Renovation
4.3.1 Renovation by the galvanizer
4.3.2 Renovation after site handling and installation
4.4 Adhesion
4.5 Acceptance criteria
4.5.1 Ultra-low reactive steels
5 Test report
Appendix A
A.1 General
A.2 Information to be supplied by the purchaser
A.3 Information to be supplied by the galvanizer
Appendix B
Appendix C
Appendix D
D.1 General
D.2 Physical and mechanical properties
D.3 Appearance and coating thickness
D.3.1 General
D.3.2 Sample size for testing
D.3.3 Thickness testing
D.3.4 Post-treatment of hot dip galvanized reinforcing steel
D.4 Traceability
D.5 Bending of reinforcing steel before and after hot dip galvanizing
Appendix E
Appendix F
Bibliography
Cited references in this standard