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AS 4750(INT)-2000

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Electrogalvanized (zinc) coatings on ferrous hollow sections
Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

30-06-2017

Language(s)

English

Published date

01-01-2000

Preview

1 - AS 4750(Int)-2000 ELECTROGALVANIZED (ZINC) COATINGS ON FERROUS HOLLOW SECTIONS
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Coating mass
7 - 3.2 Coating mass, local
7 - 3.3 Coating thickness
7 - 3.4 Coating thickness, local
7 - 3.5 Electrogalvanizing
7 - 3.6 Electrogalvanized strip
7 - 3.7 Electrogalvanized coating
7 - 3.8 Electrogalvanizer
7 - 3.9 Hollow section
7 - 3.10 Reference area
7 - 3.11 Significant surface
7 - 3.12 Supplier
7 - 4 PROCESS
7 - 4.1 Pretreatment
8 - 4.2 Raw materials
8 - 4.3 Treatment after electrogalvanizing
8 - 4.4 Weld repair coating
8 - 4.5 Treatment after weld coating
8 - 5 APPEARANCE AND FREEDOM FROM DEFECTS
8 - 6 DESIGNATION
9 - 7 SELECTION OF TEST SPECIMENS
9 - 7.1 For coating mass or thickness determinations
9 - 7.2 For adherence of the coating (circular hollow sections only)
9 - 8 COATING MASS
9 - 8.1 General
9 - 8.2 Local coating mass determination
9 - 8.3 Average coating mass determination
9 - 9 ADHERENCE OF COATING
10 - 10 WELD COATING
11 - APPENDIX A - PURCHASING GUIDELINES
11 - A1 GENERAL
11 - A2 INFORMATION TO BE SUPPLIED BY THE PURCHASER
12 - APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
12 - B1 SCOPE
12 - B2 STATISTICAL SAMPLING
12 - B3 PRODUCT CERTIFICATION
12 - B4 SUPPLIER’S QUALITY SYSTEM
13 - B5 OTHER MEANS OF ASSESSMENT
14 - APPENDIX C - GENERAL INFORMATION ON FACTORS THAT AFFECT THE CORROSION OF ZINC COATED STEEL
14 - C1 SCOPE
14 - C2 EXTERNAL ATMOSPHERIC CORROSIVITY FACTORS
14 - C3 LOCAL ENVIRONMENT EFFECTS
15 - C4 SEAWATER IMMERSION
16 - APPENDIX D - RENOVATION OF DAMAGED AREAS
16 - D1 EXTENT OF REPAIRABLE DAMAGED AREAS
16 - D2 REPAIR REQUIREMENTS
17 - APPENDIX E - TRANSPORT AND STORAGE OF ELECTROGALVANIZED HOLLOW SECTIONS
18 - APPENDIX F - DETERMINATION OF COATING MASS AND LOCAL THICKNESS
18 - F1 GENERAL
18 - F2 GRAVIMETRIC METHOD
18 - F2.1 Method
18 - F2.2 Calculation of coating mass
18 - F3 VOLUMETRIC METHOD
18 - F3.1 Method
18 - F3.2 Calculation of coating mass
19 - F4 MAGNETIC, MAGNETIC INDUCTION AND EDDY CURRENT METHODS FOR LOCAL THICKNESS
19 - F4.1 General
19 - F4.2 Calculation of coating mass
19 - F5 MICROGRAPHIC DETERMINATION FOR LOCAL THICKNESS
19 - F5.1 General
19 - F5.2 Calculation of coating mass
19 - F6 TEST REPORT

Specifies requirements for the classification, mass, quality and testing of zinc coatings on welded hollow sections produced from electrogalvanized steel strip. Also gives requirements for the repair of the coating damaged during the welding operation. Appendices give methods for the determination of coating mass and local thickness, and general advice on the corrosion protection, transport and storage and renovation of damage areas, of electrogalvanized coatings.

This Interim Standard specifies requirements for the classification, mass, quality and testing of zinc coatings on welded hollow sections produced from electrogalvanized strip.Matters relating to the quality, properties, or dimensional requirements of the steel hollow sections are outside the scope of this Interim Standard.NOTES:1 Advice and recommendations on information to be supplied by the purchaser at the time of enquiry or order are contained in the purchasing guidelines set out in Appendix A.2 Alternative means for determining compliance with this Interim Standard are given in Appendix B.3 For requirements for the steel base-metal of hollow sections see relevant product Standards, e.g. AS 1074 and AS 1163.4 General information on factors that affect the corrosion of zinc coated steel is given in Appendix C.

CommentClosesDate
14-06-2002
Committee
MT-009
DocumentType
Standard
ISBN
0 7337 3406 5
Pages
14
PublisherName
Standards Australia
Status
Superseded
SupersededBy
UnderRevision

Under Revision see DR 02360 First published as AS 4750(Int)-2000.

AS 2331.1.3-1980 Methods of test for metallic and related coatings Local thickness tests - Magnetic method
AS 1399-1990 Guide to AS 1199 - Sampling procedures and tables for inspection by attributes
AS 1074-1989 Steel tubes and tubulars for ordinary service (Reconfirmed 2018)
AS 2331.1.4-1982 Methods of test for metallic and related coatings Local thickness tests - Magnetic induction and eddy current methods
AS 1199-1988 Sampling procedures and tables for inspection by attributes
AS/NZS 2243.2:1997 Safety in laboratories - Chemical aspects
HB 18.28-1991 Guidelines for third-party certification and accreditation - Guide 28: General rules for a model third-party certification system for products
AS/NZS 3750.15:1998 Paints for steel structures Inorganic zinc silicate paint (Reconfirmed 2013)
AS 2706-1984 Numerical values - Rounding and interpretation of limiting values
AS/NZS 3750.9:1994 Paints for steel structures - Organic zinc-rich primer
AS/NZS ISO 9000.1:1994 Quality management and quality assurance standards Guidelines for selection and use
AS 2331.3.1-1980 Methods of test for metallic and related coatings Corrosion and related property tests - Neutral salt spray (NSS) test
AS 2331.1.1-1980 Methods of test for metallic and related coatings Local thickness tests - Micrographic examination of cross-sections
AS/NZS 2312:1994 Guide to the protection of iron and steel against exterior atmospheric corrosion
AS 2331.2.3-1980 Methods of test for metallic and related coatings Average thickness tests - Hydrogen evolution method for zinc coatings
AS/NZS 2243.1:1997 Safety in laboratories - General
AS/NZS ISO 9004.1:1994 Quality management and quality system elements Guidelines
AS 2331.2.1-1980 Methods of test for metallic and related coatings - Dissolution methods - Strip and weigh, and analytical Average thickness tests
AS 1163-1991 Structural steel hollow sections

AS/NZS 2312:2002 Guide to the protection of structural steel against atmospheric corrosion by the use of protective coatings

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