AS 2469-1998

1 - AS 2469-1998 STEEL CYLINDERS FOR COMPRESSED GASES - WELDED TWO-PIECE CONSTRUCTION - 0.1 kg TO 35 kg
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
6 - 3 DEFINITIONS
6 - 3.1 Attachment
6 - 3.2 Inspection Body
6 - 3.3 Inspector
6 - 4 CARBON STEEL
6 - 4.1 Cylinder halves
6 - 4.1.1 Steelmaking process
6 - 4.1.2 Cast analysis
7 - 4.1.3 Residual elements
7 - 4.1.4 Weldability
7 - 4.1.5 Mechanical properties
7 - 4.2 Attachments
7 - 5 DESIGN AND CONSTRUCTION
7 - 5.1 Minimum thickness
7 - 5.1.1 Cylinder halves
8 - 5.1.2 Ends
8 - 5.2 Form of ends
8 - 5.3 Footring
8 - 5.4 Length to outside diameter ratio
9 - 5.5 Valve protection
9 - 5.6 Pressure-retaining joint
9 - 5.6.1 General
9 - 5.6.2 Welded circumferential joint
10 - 5.6.3 Non-pressure-retaining joints
10 - 5.7 Openings in cylinders
10 - 5.7.1 Location
10 - 5.7.2 Size, proportions, and construction
11 - 5.7.3 Cylinder neck thread
11 - 5.7.4 Provision for safety device(s)
11 - 6 WELDING AND INSPECTION
11 - 6.1 Supervision of welding
11 - 6.2 Competence of welder
11 - 6.3 Repair of welds
11 - 6.4 Welding to attachments
11 - 6.5 Visual inspection
11 - 6.5.1 Cylinder halves
13 - 6.5.2 Finished gas cylinders
13 - 7 HEAT TREATMENT
13 - 8 MECHANICAL TESTS
13 - 8.1 General
13 - 8.2 Test specimens
14 - 8.3 Tensile tests of parent metal
14 - 8.4 Transverse tensile test of circumferential welded joint
14 - 8.5 Bend test(s) of circumferential welded joint
14 - 8.6 Retests for mechanical properties
14 - 9 PRESSURE TESTS
14 - 9.1 General
14 - 9.2 Proof test
15 - 9.3 Leakage test
15 - 10 TYPE TESTS
15 - 10.1 General
15 - 10.2 Stretch test
16 - 10.3 Hoop stress test
16 - 10.4 Pulsation test
16 - 10.5 Strength test of valve protection
17 - 11 SURFACE COATINGS
17 - 12 RECORD AND TEST CERTIFICATE(S)
18 - 13 STAMPING
19 - 14 PREPARATION FOR DESPATCH
20 - APPENDIX A - WELDED STAINLESS STEEL GAS CYLINDERS
20 - A1 GENERAL
20 - A2 REFERENCE DOCUMENTS
20 - A3 MATERIAL
20 - A3.1 Cylindrical sections and ends
20 - A3.2 Attachments
20 - A3.3 Intergranular corrosion test
21 - A4 DESIGN AND CONSTRUCTION
21 - A4.1 General
21 - A4.2 Cylinder neck thread
21 - A5 WELDING
21 - A6 INSPECTION OF WELDS
21 - A7 SURFACE COATINGS
21 - A8 STAMPING
21 - A9 LOCATION OF TEST SPECIMENS
22 - APPENDIX B - SUGGESTED MINIMUM INFORMATION TO BE SUPPLIED BY THE PURCHASER
23 - APPENDIX C - LIST OF REFERENCED DOCUMENTS
25 - APPENDIX D - RESISTANCE SPOT WELDING FOR NON-PRESSURE-RETAINING ATTACHMENTS
25 - D1 GENERAL
25 - D2 VERIFICATION
25 - D3 PRODUCTION
26 - APPENDIX E - LOCATIONS OF TEST SPECIMENS
27 - APPENDIX F - SUGGESTED FORM OF MANUFACTURER'S RECORD AND TEST CERTIFICATE

Gives requirements for welded steel cylinders from 0.1 kg to 35 kg water capacity, increasing the upper limit from 11 kg in the previous edition. It introduces the use of stainless steel for these cylinders in addition to the previously used carbon steel. It also introduces the use of quality control procedures for manufacturers at the point of entry into Australia.

This Standard specifies requirements for welded carbon and stainless steel cylinders with no longitudinal joint and one circumferential joint, of water capacity not less than 0.1 kg nor more than 35 kg, which have test pressures from 1750 kPa to 7000 kPa and are intended for the storage and transport of compressed gases in accordance with AS 2030.1. Stainless steel cylinders shall be constructed in accordance with Appendix A.NOTES:1 A gas cylinder manufactured by welding but which includes any brazing of, or on, the pressure-retaining portions is for the purpose of this Standard considered to be a brazed gas cylinder.2 Other Australian Standards for brazed and welded gas cylinders are AS 2468, AS 2470, and AS 3577.3 Appendix B lists the suggested minimum information that should be supplied by the purchaser when ordering gas cylinders to this Standard.

First published as part of AS B15-1950.
Revised and redesignated AS B115-1958.
Second edition 1966.
Revised and redesignated in part as AS 2469-1981.
Second edition 1989.
Third edition 1998.