This supplement to AS 2030 prescribes the conditions, additional requirements and modifications applying to cylinders manufactured to certain foreign specifications, so that the cylinders may be deemed to comply with AS 2030 for use in Australia. The cylinder specifications included in this supplement are as follows:(a) (British) Home Office Specification HOAL 1-Seamless Aluminium Alloy Cylinders (see Appendix A).(b) (British) Home Office Specification HOAL 2-Seamless Aluminium Alloy Cylinders (see Appendix B).(c) (British) Home Office Specification HOAL 3-Seamless Aluminium Alloy Cylinders (see Appendix C).(d) (British) Home Office Specification HOAL 4-Seamless Aluminium Alloy Cylinders (see Appendix D).(e) (British) Home Office Specification HOT-Alloy Seamless Steel Cylinders (see Appendix E).(f) (British) Home Office Specification HOLASW 1-Lightweight Alloy Steel Welded Containers (see Appendix F).(g) (British) Home Office Specification HOLASS 1-Lightweight Alloy Seamless Steel Containers (see Appendix H).This supplement is intended to permit the use in Australia of cylinders manufactured overseas to certain foreign specifications.In addition, this supplement may provide specifications for manufacture of cylinders within Australia, but such manufacture should only be with the specific approval of the relevant Statutory Authority, and only within the currency of the particular specification.NOTE: All (British) Home Office Specifications listed herein are no longer current, having been superseded by British standards.