EN ISO 5172:2006

SLOVENSKI STANDARD
01-oktober-2006
1DGRPHãþD
SIST EN 874:1996
SIST EN ISO 5172:1999
Oprema za plamensko varjenje - Gorilniki za plamensko varjenje, rezanje in
segrevanje - Specifikacije in preskusi (ISO 5172:2006)
Gas welding equipment - Blowpipes for gas welding, heating and cutting - Specifications
and tests (ISO 5172:2006)
Gasschweißgeräte - Brenner für Schweißen, Wärmen und Schneiden - Anforderungen
und Prüfungen (ISO 5172:2006)
Matériel de soudage aux gaz - Chalumeaux pour soudage aux gaz, chauffage et
coupage - Spécifications et essais (ISO 5172:2006)
Ta slovenski standard je istoveten z: EN ISO 5172:2006
ICS:
25.160.30 Varilna oprema Welding equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 5172
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2006
ICS 25.160.30 Supersedes EN 874:1995, EN ISO 5172:1996
English Version
Gas welding equipment - Blowpipes for gas welding, heating
and cutting - Specifications and tests (ISO 5172:2006)
Matériel de soudage aux gaz - Chalumeaux pour soudage Gasschweißgeräte - Brenner für Schweißen, Wärmen und
aux gaz, chauffage et coupage - Spécifications et essais Schneiden - Anforderungen und Prüfungen (ISO
(ISO 5172:2006) 5172:2006)
This European Standard was approved by CEN on 7 March 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
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Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5172:2006: E
worldwide for CEN national Members.

Foreword
This document (EN ISO 5172:2006) has been prepared by Technical Committee ISO/TC 44
"Welding and allied processes" in collaboration with Technical Committee CEN/TC 121
"Welding", the secretariat of which is held by DIN.

This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by October 2006, and conflicting national
standards shall be withdrawn at the latest by October 2006.

This document supersedes EN 874:1995 and EN ISO 5172:1996.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Endorsement notice
The text of ISO 5172:2006 has been approved by CEN as EN ISO 5172:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 5172
Third edition
2006-04-01
Gas welding equipment — Blowpipes for
gas welding, heating and cutting —
Specifications and tests
Matériel de soudage aux gaz — Chalumeaux pour soudage aux gaz,
chauffage et coupage — Spécifications et essais

Reference number
ISO 5172:2006(E)
©
ISO 2006
ISO 5172:2006(E)
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ii © ISO 2006 – All rights reserved

ISO 5172:2006(E)
Contents Page
Foreword. v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
3.1 Mixing system . 2
3.2 Blowpipes classified according to the possibility of varying the gas flow rate . 4
3.3 Cutting and heating blowpipes classified according to the mixing position. 5
3.4 Operational incidents . 5
3.5 Flame specifications (reference values). 5
4 Hose connections. 6
5 Material . 6
6 Marking . 7
6.1 General. 7
6.2 Marking of the blowpipe. 7
6.3 Marking of oxygen and fuel gas valves. 7
6.4 Marking of nozzles. 7
6.5 Marking of interchangeable components.7
6.6 Marking of cutting attachment . 7
6.7 Marking of mixing systems. 7
6.8 Gases to be used, symbols for gases . 8
7 Safety and operational requirements . 8
7.1 Safety requirements . 8
7.2 Operational requirements . 9
8 Tests. 9
8.1 General. 9
8.2 Leak test . 10
8.3 Sustained backfire test. 10
8.4 Test for stability in wind for fuel gas/compressed air flames. 22
8.5 Valve endurance test. 23
8.6 Backflow test for all blowpipes . 23
9 Typical dimensions of machine cutting blowpipes. 25
10 Instructions for use . 26
Annex A (informative) Corresponding flow rates for the most common fuel gases. 27
Annex B (informative) Terminology concerning welding and cutting blowpipes and example of
construction . 28
Annex C (informative) Approximate mixing ratios for normal flames . 37
Annex D (informative) Marking of components of a blowpipe . 38
Annex E (informative) Typical dimensions of machine cutting blowpipes. 39
Annex F (informative) Cutting-nozzle seat angles . 41
Annex G (normative) Alternative sustained backfire test — Use with all blowpipes. 42
Annex H (informative) Alternative sustained backfire test — Production and field acceptance. 43
ISO 5172:2006(E)
Annex I (normative) Alternative colour codes for oxygen . 44
Bibliography . 45

iv © ISO 2006 – All rights reserved

ISO 5172:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 5172 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 8, Equipment for gas welding, cutting and allied processes.
This third edition of ISO 5172 cancels and replaces ISO 5172:1995, ISO 5172:1995/Amd.1:1995 and
ISO 5186:1995, of which it constitutes a technical revision.
ISO 5172:2006(E)
Introduction
Requests for official interpretations of any aspect of this standard should be directed to the Secretariat of
ISO/TC 44/SC 8 via your national standards body, a complete listing which can be found at www.iso.org.
vi © ISO 2006 – All rights reserved

INTERNATIONAL STANDARD ISO 5172:2006(E)

Gas welding equipment — Blowpipes for gas welding, heating
and cutting — Specifications and tests
1 Scope
This Inte
...