Standard
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AS 2469-2005
[Current]Steel cylinders for compressed gases — Welded two-piece construction — 0.1 kg to 150 kg
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 150 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.
Published: 04/01/2005
Pages: 26
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope
2 Referenced documents
3 Definitions
4 Material
4.1 Steelmaking process
4.2 Carbon steel
4.2.1 Cylinder halves
4.2.1.1 Cast analysis
4.2.1.2 Residual elements
4.2.1.3 Weldability
4.2.1.4 Mechanical properties
4.2.1.5 Attachments
4.3 Stainless steel
4.3.1 Cylindrical halves
4.3.1.1 Cast analysis
4.3.1.2 Test certificates
4.3.1.3 Mechanical properties
4.3.1.4 Attachments
4.3.1.5 Intergranular corrosion test
5 Design and construction
5.1 Minimum thickness
5.1.1 Cylinder halves
5.1.2 After forming
5.2 Form of ends
5.3 Footring
5.4 Length to outside diameter ratio
5.5 Valve protection
5.6 Pressure-retaining joint
5.6.1 General
5.6.2 Welded circumferential joint
5.6.3 Non-pressure-retaining joints
5.7 Openings in cylinders
5.7.1 Location
5.7.2 Size, proportions, and construction
5.7.3 Cylinder neck thread
5.7.4 Provision for safety device(s)
6 Welding and inspection
6.1 Supervision of welding
6.2 Competence of welder
6.3 Repair of welds
6.4 Welding to attachments
6.5 Visual inspection
6.5.1 Cylinder halves
6.5.2 Finished gas cylinders
7 Heat treatment
8 Mechanical tests
8.1 General
8.2 Test specimens
8.2.1 General
8.2.2 For cylinders up to and including 50 litres water capacity
8.2.3 For cylinders over 50 litres water capacity
8.3 Tensile tests of parent metal
8.4 Transverse tensile test of circumferential welded joint
8.5 Bend test(s) of circumferential welded joint
8.6 Retests for mechanical properties
9 Pressure tests
9.1 General
9.2 Proof test
9.3 Leakage test
10 Type tests
10.1 General
10.2 Stretch test
10.3 Hoop stress test
10.4 Pulsation test
10.5 Strength test of valve protection
11 Surface coatings
12 Record and test certificate(s)
13 Stamping
14 Preparation for despatch
Appendix A
A1 Application
A2 General precautions
A3 Test temperature
A4 Test procedure
A4.1 General
A4.2 Fittings
A4.3 Application of pressure
A4.4 Acceptance criteria
A5 Reporting of results
Appendix B
Appendix C
Appendix D
D1 General
D2 Verification
D3 Production
Appendix E
Appendix F
Cited references in this standard
[Superseded]
Pipe threads of Whitworth form, Part 1: Sealing pipe threads (metric units)
[Current]
Methods of test for metallic and related coatings, Method 3.6: Corrosion and related property tests — Electrographic porosity test
[Current]
Metal finishing — Preparation and pretreatment of surfaces, Part 4: Abrasive blast cleaning of steel
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