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AS/NZS 4680:2006


Hot-dip galvanized (zinc) coatings on fabricated ferrous articles

Specifies requirements and tests for hot-dip zinc coatings on fabrications, assembled steel products, tubular fabrications, fabricated wire work, steel forgings, steel stampings, ferrous castings, nails and small components.
Published: 30/08/2006
Pages: 23
Table of contents
Cited references
Content history
Table of contents
About this publication
1 Scope
2 Referenced documents
3 Definitions
4 Design requirements
5 Basis metal
6 Galvanizing process
6.1 Pretreatment
6.2 Bath composition
6.3 Threaded components
7 Appearance and freedom from defects
8 Repair after galvanizing
8.1 Extent of repairable damaged or uncoated areas
8.2 Repair requirements
8.3 Repair after site handling and installation
8.4 Site repair
9 Coating mass and thickness
9.1 Coating mass
9.2 Coating thickness
10 Adherence of coating
Appendix A
A1 General
A2 Information to be supplied by the purchaser
Appendix B
B1 Scope
B2 Statistical sampling
B3 Product certification
B4 Supplier’s quality system
B5 Other means of assessment
Appendix C
C1 Scope
C2 Size and shape
C3 Dimensional stability
C4 Overlapping or contacting surfaces
C5 Welding
C6 Venting and draining
C6.1 General
C6.2 Hollow sections
C7 Assemblies
C8 Movable parts
C9 Labels and markings
C10 Handling
C11 Castings
Appendix D
D1 Basis metal
D1.1 Composition
D1.2 Surface condition
D1.3 The influence of the steel surface on the hot-dip galvanized coating thickness
D1.4 Stresses in the basis metal
D2 Large objects or thick steels
D3 Hot-dip galvanizing practice
Appendix E
E1 Scope
E2 Painting procedures
E2.1 General
E2.2 Preparation
E2.3 Painting system
Appendix F
Appendix G
G1 General
G2 Gravimetric method
G2.1 Method
G2.2 Calculation of coating mass
G3 Volumetric method
G3.1 Method
G3.2 Calculation of coating mass
G4 Mass-on-mass method
G5 Magnetic, magnetic induction and eddy current methods for local thickness
G5.1 General
G5.2 Calculation of coating mass
G6 Test report
Appendix H
H1 Scope
H2 External atmospheric corrosivity factors
H3 Local environment effects
H4 Sea water immersion
Appendix I
I1 General
I2 Procedure
Cited references in this standard
Methods of test for metallic and related coatings, Method 1.3: Local thickness tests — Magnetic method
Quality management systems — Requirements
Sampling procedures for inspection by attributes, Part 0: Introduction to the ISO 2859 attribute sampling system
Sampling procedures for inspection by attributes, Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
Hot-dip galvanized coatings on threaded fasteners (ISO metric coarse thread series)
Content history
AS/NZS 4680-2006 REC:2017
DR 05584
Inclusive of GST
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