ISO 9012:2023
(Main)Gas welding equipment — Air-aspirated hand blowpipes — Specifications and tests
Gas welding equipment — Air-aspirated hand blowpipes — Specifications and tests
This document specifies requirements and test methods for air-aspirated hand blowpipes. This document applies to blowpipes for brazing, soldering, heating, fusion and other allied thermal processes which use a fuel gas and aspirated air (injector-type blowpipes) and are intended for manual use. This document is applicable to: — air-aspirated hand blowpipes which are fed with a fuel gas in the gaseous phase, at a controlled pressure by a regulator, through a gas supply hose; — air-aspirated hand blowpipes which are fed with a liquefied fuel gas in the gaseous phase at the container pressure, through a gas supply hose; — so-called liquid-phase blowpipes which are fed with a fuel gas in the liquid phase, and where thermal evaporation takes place within the blowpipe. It does not apply to blowpipes in which the fuel gas leaves the injector in the liquid phase, or to so-called “cartridge” blowpipes where the gas supply is fixed directly onto the blowpipe and possibly constitutes the shank. NOTE Figures 1 to 4 are given for guidance only, to facilitate the explanation of the terms. They do not specify the construction details, which are left to the discretion of the manufacturer.
Équipement de soudage aux gaz — Chalumeaux manuels aéro-gaz à air aspiré — Spécifications et essais
Le présent document spécifie les exigences et les méthodes d'essai des chalumeaux manuels aéro-gaz à air aspiré. Le présent document s'applique aux chalumeaux destinés au brasage fort, au brasage tendre, au chauffage, à la fusion et aux autres procédés thermiques similaires, utilisant un gaz combustible et de l'air aspiré (chalumeau à air induit), conçus pour une utilisation manuelle. Le présent document s'applique également: — aux chalumeaux manuels aéro-gaz à air aspiré, alimentés par un gaz combustible en phase gazeuse, sous une pression régulée par un détendeur, à travers un tuyau d'amenée de gaz; — aux chalumeaux manuels aéro-gaz à air aspiré, alimentés par un gaz combustible liquéfié en phase gazeuse sous la pression du réservoir, à travers un tuyau d'amenée de gaz; — aux chalumeaux dits à phase liquide, alimentés par un gaz combustible en phase liquide et dans lesquels se produit une évaporation thermique. Il ne s'applique pas aux chalumeaux dans lesquels le gaz combustible sort de l'injecteur en phase liquide, ni aux chalumeaux dits «à cartouche» comportant une réserve de gaz directement fixée sur le chalumeau et pouvant éventuellement servir de manche. NOTE Les Figures 1 à 4 sont données uniquement à titre indicatif pour faciliter l'explication des termes. Elles ne spécifient pas les détails de construction qui sont laissés à la discrétion du fabricant.
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 9012
Fourth edition
2023-10
Gas welding equipment — Air-
aspirated hand blowpipes —
Specifications and tests
Équipement de soudage aux gaz — Chalumeaux manuels aéro-gaz à
air aspiré — Spécifications et essais
Reference number
© ISO 2023
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Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Main types of aspiration . 2
5 Apparatus . 5
6 Requirements . 6
6.1 General . 6
6.2 Materials . 6
6.3 Valves . 6
6.4 Shank . 6
6.5 Hose connection . 7
6.6 Gas tightness . 7
6.7 Gas-flow rate . 7
6.8 Safety against sustained backfiring and blowing-off of the flame . 7
6.9 Flame adjustment . 7
6.10 Stability in air currents . . . 8
6.11 Ignition . 8
7 Tests . 8
7.1 General . 8
7.2 General checks . 8
7.3 Operational tests . 8
7.4 Shank-overheating tests . 8
7.5 Gas tightness . 9
7.6 Valve endurance test . 9
7.7 Checking gas-flow rates . 9
7.8 Safety against sustained backfire and blowing-off of the flame . 9
7.9 Stability in air currents . . . 9
7.10 V erification of the device against inadvertent operation . 9
8 Marking . . 9
8.1 General . 9
8.2 Marking of the shank . 10
8.3 Marking of the attachment . 10
9 Code letters identifying the gas(es) used .10
10 Instructions for use . .10
Bibliography .11
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
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www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 44, Welding and allied processes,
Subcommittee SC 8, Equipment for gas welding, cutting and allied processes, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 121, Welding and allied
processes, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This fourth edition cancels and replaces the third edition (ISO 9012:2008), which has been technically
revised.
The main changes are as follows:
— entries 3.4 and 3.5 added;
— in Clause 4, the “types of aspiration” in Figures 2 to 4 rearranged and Table 1 revised;
— in 5.1.3, text revised and NOTES 1 and 2 added;
— in 6.5, ISO/TR 28821 referred to instead of the withdrawn ISO 3253;
— in 6.6, NOTES 1 and 2 added because there are cases where airtightness cannot be obtained even if
the adjustment of air inlet (item 12) is set to the closed position;
— in 6.9, requirements added;
— in 7.1, the accuracy of gas pressure and flow rate measuring equipment from 7.7 added;
— in 7.6, the number of cycles for the life cycle test changed from 5 000 cycles to 1 500 cycles;
— in the Bibliography, ISO/TR 28821 referred to instead of the withdrawn ISO 3253.
iv
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html. Official
interpretations of ISO/TC 44 documents, where they exist, are available from this page:
https://committee.iso.org/sites/tc44/home/interpretation.html.
v
INTERNATIONAL STANDARD ISO 9012:2023(E)
Gas welding equipment — Air-aspirated hand blowpipes —
Specifications and tests
1 Scope
This document specifies requirements and test methods for air-aspirated hand blowpipes.
This document applies to blowpipes for brazing, soldering, heating, fusion and other allied thermal
processes which use a fuel gas and aspirated air (injector-type blowpipes) and are intended for manual
use.
This document is applicable to:
— air-aspirated hand blowpipes which are fed with a fuel gas in the gaseous phase, at a controlled
pressure by a regulator, through a gas supply hose;
— air-aspirated hand blowpipes which are fed with a liquefied fuel gas in the gaseous phase at the
container pressure, through a gas supply hose;
— so-called liquid-phase blowpipes which are fed with a fuel gas in the liquid phase, and where thermal
evaporation takes place within the blowpipe.
It does not apply to blowpipes in which the fuel gas leaves the injector in the liquid phase, or to so-called
“cartridge” blowpipes where the gas supply is fixed directly onto the blowpipe and possibly constitutes
the shank.
NOTE Figures 1 to 4 are given for guidance only, to facilitate the explanation of the terms. They do not
specify the construction details, which are left to the discretion of the manufacturer.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 554, Standard atmospheres for conditioning and/or testing — Specifications
ISO 9090, Gas tightness of equipment for gas welding and allied processes
ISO 9539, Gas welding equipment — Materials for equipment used in gas welding, cutting and allied
processes
ISO 10225, Gas welding equipment — Marking for equipment used for gas welding, cutting and allied
processes
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
...
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