AS/NZS 4792:2006
Hot-dip galvanized (zinc) coatings on ferrous hollow sections, applied by a continuous or a specialized process
Specifies requirements for the mass, quality and testing of hot-dip galvanized coatings applied to hollow sections galvanized on both surfaces in a specialized plant; produced by welding pre-galvanized steel strip; and on external surfaces only, using a continuous (in-line) process.
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AS/NZS 4792:2006 HOT-DIP GALVANIZED (ZINC) COATINGS ON FERROUS HOLLOW SECTIONS, APPLIED BY A CONTINUOUS OR A SPECIALIZED...
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.3.1 Coating mass
1.3.2 Coating thickness
1.3.3 Coating thickness, local
1.3.4 Continuous (in-line) hot-dip galvanizing
1.3.5 Galvanizer
1.3.6 Hot-dip galvanized coating
1.3.7 Hot-dip galvanizing
1.3.8 Pre-galvanized strip
1.3.9 Reference area
1.3.10 Significant surface
1.3.11 Supplier
1.4 GALVANIZING PROCESS
1.4.1 Pretreatment
1.4.2 Bath composition
1.4.3 Galvanizing
1.4.4 Treatment after galvanizing
1.5 APPEARANCE AND FREEDOM FROM DEFECTS
SECTION 2 HOT-DIP GALVANIZED COATINGS APPLIED TO HOLLOW SECTIONS ON BOTH SURFACES
2.1 SCOPE
2.2 DESIGNATION
2.3 SELECTION OF TEST SPECIMENS
2.3.1 For coating mass determinations
2.3.2 For adherence of the coating (circular sections only)
2.4 COATING MASS AND THICKNESS
2.4.1 Coating mass
2.4.2 Coating thickness
2.5 ADHERENCE OF COATING
SECTION 3 HOT-DIP GALVANIZED COATINGS ON HOLLOW SECTIONS PRODUCED BY WELDING PRE-GALVANIZED STRIP
3.1 SCOPE
3.2 DESIGNATION
3.3 SELECTION OF TEST SPECIMENS
3.3.1 For coating mass determination
3.3.2 For adherence of the coating (circular hollow sections only)
3.4 COATING MASS
3.5 ADHERENCE OF COATING
3.6 WELD COATING
SECTION 4 IN-LINE HOT-DIP GALVANIZED COATINGS APPLIED ONLY TO EXTERNAL SURFACES OF HOLLOW SECTIONS
4.1 SCOPE
4.2 DESIGNATION
4.3 SELECTION OF TEST SPECIMENS
4.3.1 For coating mass determinations
4.3.2 For adherence of coating (circular sections only)
4.4 COATING MASS AND THICKNESS
4.4.1 Coating mass
4.4.2 Coating thickness
4.5 ADHERENCE OF COATING
APPENDIX A - PURCHASING GUIDELINES
A1 GENERAL
A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
B1 SCOPE
B2 STATISTICAL SAMPLING
B3 PRODUCT CERTIFICATION
B4 SUPPLIER™S QUALITY SYSTEM
B5 OTHER MEANS OF ASSESSMENT
APPENDIX C - GENERAL INFORMATION ON FACTORS THAT AFFECT THE CORROSION OF GALVANIZED STEEL
C1 SCOPE
C2 EXTERNAL ATMOSPHERIC CORROSIVITY FACTORS
C3 LOCAL ENVIRONMENT EFFECTS
C4 SEAWATER IMMERSION
APPENDIX D - RENOVATION OF DAMAGED OR UNCOATED AREAS
D1 EXTENT OF REPAIRABLE DAMAGED AREAS
D2 REPAIR REQUIREMENTS
APPENDIX E - TRANSPORT AND STORAGE OF GALVANIZED HOLLOW SECTIONS
APPENDIX F - DETERMINATION OF COATING MASS AND LOCAL THICKNESS
F1 GENERAL
F2 GRAVIMETRIC METHOD
F2.1 Method
F2.2 Calculation of coating mass
F3 VOLUMETRIC METHOD
F3.1 Method
F3.2 Calculation of coating mass
F4 MAGNETIC, MAGNETIC INDUCTION AND EDDY CURRENT METHODS FOR LOCAL THICKNESS
F4.1 General
F4.2 Calculation of coating mass
F5 MICROGRAPHIC DETERMINATION FOR LOCAL THICKNESS
F5.1 General
F5.2 Calculation of coating mass
F6 TEST REPORT
APPENDIX G - DUPLEX ADDED PROTECTION FOR GALVANIZING PLACED BELOW GROUND
G1 SCOPE
G2 PAINTING PROCEDURES
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References
Safety in laboratories - Planning and operational aspects
Safety in laboratories - Chemical aspects
Paints for steel structures - Organic zinc-rich primer
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AS/NZS 4792:2006 HOT-DIP GALVANIZED (ZINC) COATINGS ON FERROUS HOLLOW SECTIONS, APPLIED BY A CONTINUOUS OR A SPECIALIZED...
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.3.1 Coating mass
1.3.2 Coating thickness
1.3.3 Coating thickness, local
1.3.4 Continuous (in-line) hot-dip galvanizing
1.3.5 Galvanizer
1.3.6 Hot-dip galvanized coating
1.3.7 Hot-dip galvanizing
1.3.8 Pre-galvanized strip
1.3.9 Reference area
1.3.10 Significant surface
1.3.11 Supplier
1.4 GALVANIZING PROCESS
1.4.1 Pretreatment
1.4.2 Bath composition
1.4.3 Galvanizing
1.4.4 Treatment after galvanizing
1.5 APPEARANCE AND FREEDOM FROM DEFECTS
SECTION 2 HOT-DIP GALVANIZED COATINGS APPLIED TO HOLLOW SECTIONS ON BOTH SURFACES
2.1 SCOPE
2.2 DESIGNATION
2.3 SELECTION OF TEST SPECIMENS
2.3.1 For coating mass determinations
2.3.2 For adherence of the coating (circular sections only)
2.4 COATING MASS AND THICKNESS
2.4.1 Coating mass
2.4.2 Coating thickness
2.5 ADHERENCE OF COATING
SECTION 3 HOT-DIP GALVANIZED COATINGS ON HOLLOW SECTIONS PRODUCED BY WELDING PRE-GALVANIZED STRIP
3.1 SCOPE
3.2 DESIGNATION
3.3 SELECTION OF TEST SPECIMENS
3.3.1 For coating mass determination
3.3.2 For adherence of the coating (circular hollow sections only)
3.4 COATING MASS
3.5 ADHERENCE OF COATING
3.6 WELD COATING
SECTION 4 IN-LINE HOT-DIP GALVANIZED COATINGS APPLIED ONLY TO EXTERNAL SURFACES OF HOLLOW SECTIONS
4.1 SCOPE
4.2 DESIGNATION
4.3 SELECTION OF TEST SPECIMENS
4.3.1 For coating mass determinations
4.3.2 For adherence of coating (circular sections only)
4.4 COATING MASS AND THICKNESS
4.4.1 Coating mass
4.4.2 Coating thickness
4.5 ADHERENCE OF COATING
APPENDIX A - PURCHASING GUIDELINES
A1 GENERAL
A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
B1 SCOPE
B2 STATISTICAL SAMPLING
B3 PRODUCT CERTIFICATION
B4 SUPPLIER™S QUALITY SYSTEM
B5 OTHER MEANS OF ASSESSMENT
APPENDIX C - GENERAL INFORMATION ON FACTORS THAT AFFECT THE CORROSION OF GALVANIZED STEEL
C1 SCOPE
C2 EXTERNAL ATMOSPHERIC CORROSIVITY FACTORS
C3 LOCAL ENVIRONMENT EFFECTS
C4 SEAWATER IMMERSION
APPENDIX D - RENOVATION OF DAMAGED OR UNCOATED AREAS
D1 EXTENT OF REPAIRABLE DAMAGED AREAS
D2 REPAIR REQUIREMENTS
APPENDIX E - TRANSPORT AND STORAGE OF GALVANIZED HOLLOW SECTIONS
APPENDIX F - DETERMINATION OF COATING MASS AND LOCAL THICKNESS
F1 GENERAL
F2 GRAVIMETRIC METHOD
F2.1 Method
F2.2 Calculation of coating mass
F3 VOLUMETRIC METHOD
F3.1 Method
F3.2 Calculation of coating mass
F4 MAGNETIC, MAGNETIC INDUCTION AND EDDY CURRENT METHODS FOR LOCAL THICKNESS
F4.1 General
F4.2 Calculation of coating mass
F5 MICROGRAPHIC DETERMINATION FOR LOCAL THICKNESS
F5.1 General
F5.2 Calculation of coating mass
F6 TEST REPORT
APPENDIX G - DUPLEX ADDED PROTECTION FOR GALVANIZING PLACED BELOW GROUND
G1 SCOPE
G2 PAINTING PROCEDURES
Previous versions
AS/NZS 4792:2006
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.