prEN ISO 9012
(Main)Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests (ISO/DIS 9012:2023)
Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests (ISO/DIS 9012:2023)
Gasschweißgeräte - Handbrenner für angesaugte Luft - Anforderungen und Prüfungen (ISO/DIS 9012:2023)
Équipement de soudage aux gaz - Chalumeaux manuels aéro-gaz à air aspiré - Spécifications et essais (ISO/DIS 9012:2023)
Oprema za plamensko varjenje - Ročni gorilniki z vsesavanjem zraka - Popisi in preskusi (ISO/DIS 9012:2023)
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 9012:2023
01-marec-2023
Oprema za plamensko varjenje - Ročni gorilniki z vsesavanjem zraka - Popisi in
preskusi (ISO/DIS 9012:2023)
Gas welding equipment - Air-aspirated hand blowpipes - Specifications and tests
(ISO/DIS 9012:2023)
Gasschweißgeräte - Handbrenner für angesaugte Luft - Anforderungen und Prüfungen
(ISO/DIS 9012:2023)
Équipement de soudage aux gaz - Chalumeaux manuels aéro-gaz à air aspiré -
Spécifications et essais (ISO/DIS 9012:2023)
Ta slovenski standard je istoveten z: prEN ISO 9012
ICS:
25.160.30 Varilna oprema Welding equipment
oSIST prEN ISO 9012:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 9012:2023
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oSIST prEN ISO 9012:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9012
ISO/TC 44/SC 8 Secretariat: DIN
Voting begins on: Voting terminates on:
2023-01-02 2023-03-27
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
ICS: 25.160.30
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
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Reference number
NATIONAL REGULATIONS.
ISO/DIS 9012:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
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oSIST prEN ISO 9012:2023
ISO/DIS 9012:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9012
ISO/TC 44/SC 8 Secretariat: DIN
Voting begins on: Voting terminates on:
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
ICS: 25.160.30
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
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NOT BE REFERRED TO AS AN INTERNATIONAL
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 9012:2022(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
© ISO 2023 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022
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oSIST prEN ISO 9012:2023
ISO/DIS 9012:2022(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Main types of aspiration . 2
5 Description of components .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 . 8
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 Verification of the device against inadvertent operation . 9
8 Marking . .10
8.1 General . 10
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 .12
iii
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oSIST prEN ISO 9012:2023
ISO/DIS 9012:2022(E)
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
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
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.
This fourth edition cancels and replaces the third edition (ISO 9012:2008), which has been technically
revised.
The main changes are as follows:
— 3.4 maximum flow rate and 3.5 minimum flow rate were added;
— in 4 the "types of aspiration" in Figures 2 to 4 have been rearranged and Table 1 has been changed;
— in 5.1.4 the text was changed and NOTE 1 and NOTE 2 were added;
— in 6.5 ISO/TR 28821 was referred to instead of the withdrawn ISO 3253;
— in 6.6 Note 1 and NOTE 2 were 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 mandatory requirements were added;
— in 7.1 the accuracy of gas pressure and flow rate measuring equipment from 7.7 was added;
— in 7.6 the number of cycles for the life cycle test was changed from 5 000 cycles to 1 500 cycles;
— in the Bibliography ISO/TR 28821 was referred to instead of the withdrawn ISO 3253.
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.
iv
© ISO 2022 – All rights reserved
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oSIST prEN ISO 9012:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 9012:2022(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 of this document 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/
1
© ISO 2022 – All rights reserved
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oSIST prEN ISO 9012:2023
ISO/DIS 9012:2022(E)
3.1
air-aspirated blowpipe
blowpipe in which the fuel gas leaves the injector in the gaseous phase, being subsequently mixed in
the mixing zone with a sufficient quantity of air, aspirated from the ambient atmosphere, to produce a
technically usable flame
Note 1 to entry: See Figure 1.
NOTE See Table 1 for the key to Figure 1.
Figure 1 — Schematic drawing of the mixing zone
3.2
sustained backfire
penetration of the flame into the blowpipe, with continued burning upstream of the part intended for
this purpose, i.e. within:
— the blowpipe nozzle, behind the grid or flame-
...
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