prEN ISO 17660
(Main)Welding - Welding of reinforcing steel (ISO/DIS 17660:2003)
Welding - Welding of reinforcing steel (ISO/DIS 17660:2003)
This standard applies to the welding of weldable reinforcing steels and stainless reinforcing steels according to relevant standards or technical qualifications in workshops or on site. It covers also joints between reinforcing steel bars and other steel components such as connection devices, insert anchors including prefabrica-ted assemblies.
This standard does not apply to factory production for welding fabric and lattice girders.
The requirements of this standard only apply for static loaded structures. This standard specifies requirements for materials, design and execution of welded joints, welding personnel, quality requirements, examination and testing.
Schweißen - Schweißen von Betonstahl (ISO/DIS 17660:2003)
Diese Norm gilt für das Schweißen von schweißgeeigneten Betonstählen und nichtrostenden Betonstählen nach den maßgebenden Normen oder technischen Zulassungen in Betrieben und auf der Baustelle. Sie enthält auch Verbindungen zwischen Betonstabstählen und anderen Stahlteilen wie Verbindungsvorrichtungen, Verankerungen einschließlich vorgefertigter Einbauteile.
Diese Norm gilt nicht für die fabrikmäßige Herstellung von Betonmatten und Gitterträgern.
Die Anforderung dieser Norm gilt nur für vorwiegend ruhend beanspruchte Bauteile. Diese Norm legt Anforderungen für Werkstoffe, Entwurf und Ausführung geschweißter Verbindungen, Schweißpersonal, Qualitätsanforderungen, Untersuchung und Prüfung fest.
Soudage - Soudage d'aciers pour armature (ISO/DIS 17660:2003)
La présente norme s'applique au soudage des aciers soudables et des aciers inoxydables pour armatures selon les normes applicables ou les qualifications techniques dans les ateliers ou sur chantier. Elle couvre également les assemblages entre les barres en acier pour armatures et d'autres éléments en acier tels que les raccords, les ancrages encastrés comportant des assemblages préfabriqués.
La présente norme ne s'applique pas à la production en usine pour souder les armatures en treillis soudés et les poutres en treillis.
Les exigences de la présente norme ne s'appliquent qu'aux structures soumises à des charges statiques. La présente norme spécifie des exigences relatives aux matériaux, à la conception et à l'exécution des assemblages soudés, au personnel de soudage, à la qualité, aux examens et aux essais.
Varjenje - Varjenje betonskega armaturnega jekla (ISO/DIS 17660:2021)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 17660:2021
01-oktober-2021
Varjenje - Varjenje betonskega jekla (ISO/DIS 17660:2021)
Welding - Welding of reinforcing steel (ISO/DIS 17660:2021)
Schweißen - Schweißen von Betonstahl (ISO/DIS 17660:2021)
Soudage - Soudage des aciers d'armatures (ISO/DIS 17660:2021)
Ta slovenski standard je istoveten z: prEN ISO 17660
ICS:
25.160.01 Varjenje, trdo in mehko Welding, brazing and
spajkanje na splošno soldering in general
oSIST prEN ISO 17660:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 17660:2021
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oSIST prEN ISO 17660:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 17660
ISO/TC 44/SC 10 Secretariat: DIN
Voting begins on: Voting terminates on:
2021-08-23 2021-11-15
Welding ― Welding of reinforcing steel
ICS: 25.160.01
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 17660:2021(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2021
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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ii © ISO 2021 – All rights reserved
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Symbols and abbreviated terms . 2
5 Welding processes . 4
6 Preparations and specifications for welded joints . 4
6.1 General . 4
6.2 Butt joints . 5
6.2.1 Butt joints welded by welding process 111, 114, 135, 136, 138 or 141 . 5
6.2.2 Butt joints welded by welding process 24, 25 or 42 . 6
6.2.3 Butt joints welded by welding process 47 . 6
6.3 Lap joints . 6
6.4 Strap joints. 7
6.5 Cross joints . 8
6.5.1 General. 8
6.5.2 Cross joints for welding process 111, 114, 135, 136, 138 or 141 . 8
6.5.3 Cross joints for welding process 21 or 23 . 9
6.6 Joints between reinforcing steel bars and other steel components . 9
6.6.1 General. 9
6.6.2 Types of joint . 9
7 Materials .13
7.1 Parent materials .13
7.1.1 Reinforcing steels .13
7.1.2 Inspection documents .13
7.2 Welding consumables .14
8 Quality requirements .14
9 Welding personnel.14
9.1 Welding coordination .14
9.2 Welder and operator qualifications .14
9.2.1 Welders for load-bearing welded joints .14
9.2.2 Welding operators and resistance weld setters for load-bearing welded joints .16
9.2.3 Welders for non-load-bearing welded joints.16
9.3 Validity of qualification test certificate of welder and welding operator .16
10 Welding procedure specification (WPS) .16
11 Welding procedure qualification for load-bearing joints .16
11.1 General .16
11.2 Test specimens .16
11.3 Mechanical testing .16
11.4 Acceptance criteria .17
11.5 Range of qualification .17
11.5.1 Material .17
11.5.2 Diameter of reinforcing steel bar and material thickness .18
11.5.3 Other essential variables .19
11.6 Validity of welding procedure test .20
12 Production weld test .20
13 Execution and inspection of production welding of reinforcing steel .20
13.1 General .20
13.2 Welding of bent reinforcing steel bars.21
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
13.3 Welds made by welding process 47 .22
14 Mechanical testing of specimens .22
14.1 General .22
14.2 Tensile test .22
14.2.1 Test specimen .22
14.2.2 Test procedure .22
14.2.3 Evaluation of test results .22
14.2.4 Report of test results .23
14.3 Shear test .23
14.3.1 Test specimen .23
14.3.2 Test procedure .23
14.3.3 Evaluation of test results .24
14.3.4 Report of test results .24
14.4 Bend test .24
14.4.1 Test specimen .24
14.4.2 Test procedure .24
14.4.3 Evaluation of test results .24
Annex A (informative) Welding procedure specification (WPS) .25
Annex B (informative) Test specimens .29
Annex C (informative) Evaluation of testing of welded joints .34
Annex D (informative) Example for production log .36
Annex E (normative) Classification of shear strength of load-bearing cross joints .38
Annex F (informative) Examples of diameter combinations for welding cross joints using
welding processes 21 and 23 .39
Bibliography .40
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(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 [or Project Committee] ISO/TC [or ISO/PC] 44,
Welding and allied processes, Subcommittee SC 10, Quality management in the field of welding.
This second edition cancels and replaces the first edition (ISO 17660-1:2006 and ISO 17660-2:2006),
which has been technically revised.
The main changes compared to the previous edition are as follows:
— document editorially revised;
— part 1 and part 2 merged in one document;
— Figure 3, Figure 9, Figure 10 and Figure 11 technically revised;
— number of test pieces in subclause 9.2 regarding Welder and operator qualifications changed.
— document editorially revised;
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.
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oSIST prEN ISO 17660:2021
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oSIST prEN ISO 17660:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 17660:2021(E)
Welding ― Welding of reinforcing steel
1 Scope
This document is applicable to the welding of weldable reinforcing steel and stainless reinforcing steel
of load-bearing joints or non-load-bearing joints, in workshops or on site. It specifies requirements for
materials, design and execution of welded joints, welding personnel, quality requirements, mechanical
testing. All provisions except subclause 9.2.3 apply to load-bearing joints. The requirements for non-
load-bearing joints are specified or illustrated in the subclause 6.1, 6.3, 6.5, Clause 8, subclause 9.2.3
and 13.
This document also covers welded joints between reinforcing steel bars and other steel components,
such as connection devices and insertion anchors, including prefabricated assemblies.
This document is not applicable to factory production of welding fabric and lattice girders using
multiple spot-welding machines or multiple projection welding machines.
The requirements of this document are only applicable to static loaded structures. For fatigue-loaded
structures, depending on type of joint and welding process, it is recommended that an appropriate
reduction be taken into account on the fatigue strength of the reinforcing steel.
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 3834-3, Quality requirements for fusion welding of metallic materials — Part 3: Standard quality
requirements
ISO 3834-4, Quality requirements for fusion welding of metallic materials — Part 4: Elementary quality
requirements
ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
ISO 5817, Welding — Fusion-welded joints in steel, nickel, titanium and their alloys (beam welding
excluded) — Quality levels for imperfections
ISO 9606-1, Qualification testing of welders — Fusion welding — Part 1: Steels
ISO 14731, Welding coordination — Tasks and responsibilities
ISO 14732, Welding personnel — Qualification testing of welding operators and weld setters for mechanized
and automatic welding of metallic materials
ISO 15609-1, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 1: Arc welding
ISO 15609-2, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 2: Gas welding
ISO 15609-5, Specification and qualification of welding procedures for metallic materials — Welding
procedure specification — Part 5: Resistance welding
ISO 15620, Welding — Friction welding of metallic materials
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
ISO 15630-1, Steel for the reinforcement and prestressing of concrete — Test methods — Part 1: Reinforcing
bars, rods and wire
ISO 15630-2, Steel for the reinforcement and prestressing of concrete — Test methods — Part 2: Welded
fabric and lattice girders
ISO 16020, Steel for the reinforcement and prestressing of concrete — Vocabulary
ISO 17637, Non-destructive testing of welds — Visual testing of fusion-welded joints
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the following apply.
ISO and IEC maintain terminological 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/
3.1
Load-bearing welded joints
welded joint used for transmission of specified loads between reinforcing steel bars or between
reinforcing steel bars and other steel products
3.2
Non-load-bearing welded joints
welded joint whose strength is not taken into account in the design of the reinforced concrete structure
Note 1 to entry: The purpose of a non-load-bearing welded joint is usually only to keep the reinforcing components
in their correct places during fabrication, transport and concreting. The weld is often called tack weld.
3.3
Shear factor
S
f
relation between the shear force of a cross joint and the nominal yield strength R , multiplied by the
e
nominal cross section area A , of the loaded bar
s
3.4
manufacturer
enterprise carrying out the welding works within workshops or on site
4 Symbols and abbreviated terms
a throat thickness
A percentage total elongation at maximum force
gt
A nominal cross-sectional area of the bar
n
A nominal cross-sectional area of the bar to be anchored
s
b excess of the bar
d, d , d nominal diameter of the welded bar
1 2
d maximum nominal diameter of the welded bar
max
d minimum nominal diameter of the welded bar
min
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
e distance between the bars
F force to be anchored by transverse bar
F maximum tensile force
max
F shear force
s
l length of the weld (cross joint)
l overall lap length
o
L minimum length of the test specimen
min
r radius of bent reinforcing steel bar
R specified characteristic yield strength of the reinforcing steel
e
R nominal tensile strength of the reinforcing steel
m
S shear factor
f
s throat thickness for butt weld
t thickness of the web of a section or of a plate to be welded
t minimum thickness of the web of a section or of a plate to be welded
min
w weld width
x root gap
y depth of root face
z, z , z leg length
1 2
α included angle
BW butt weld
CEV carbon equivalent value
FW fillet weld
SF shear factor class
WPQR welding procedure qualification record
WPS welding procedure specification
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
5 Welding processes
The following welding processes in accordance with ISO 4063 may be used (see Table 1):
Table 1 — List of welding processes and reference numbers in accordance with ISO 4063
Welding process English term American term
Manual metal-arc welding
111 Shielded metal-arc welding
(Metal-arc welding with covered electrode)
114 Self-shielded tubular cored arc welding
Gas metal-arc welding using inert
131 MIG welding with solid wire electrode
gas and solid wire electrode
Gas metal-arc welding using active
135 MAG welding with solid-wire electrode
gas with solid-wire electrode
Gas metal-arc welding using active
136 MAG welding with flux-cored electrode
gas and flux-cored electrode
Gas metal-arc welding using active
138 MAG welding with metal-cored electrode
gas and metal-cored electrode
Gas tungsten-arc welding using
141 TIG welding with solid filler material (wire/rod) inert gas and solid filler material
(wire/rod)
21 Resistance spot welding Spot welding
23 Projection welding
24 Flash welding
25 Resistance butt welding Upset welding
42 Friction welding
47 Oxyfuel gas pressure welding Pressure gas welding
The principles of this document may be applied to other welding processes.
6 Preparations and specifications for welded joints
6.1 General
For load-bearing welded joints, minimum joint strength depending on the type of welded joint with
stipulated welding process is given in Table 2. The shear strength for cross joints shall be specified in
the design (see also Annex E).
For non-load-bearing welded joints, lap joint or cross joint is applicable and minimum joint strength
is not required generally. Peculiar strength for the joint or measures to avoid influence in the load-
bearing capacity or ductility of the bars shall be specified in the design.
Table 2 — Minimum strength of load-bearing welded joints
Type of welded joint Recommended welding process Minimum joint strength
111, 114
butt joint 135, 136, 138, 141, 24, 25
42, 47
a
d / d should be ≥ 0,2.
min max
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
Table 2 (continued)
Type of welded joint Recommended welding process Minimum joint strength
111, 114
axial load with full load-bearing capaci-
lap joint / strap joint
ty of the bar
135, 136, 138, 141
111, 114
joint to other steel component 135, 136, 138, 141
42
111, 114
shear with the product of shear factor
a
cross joint
and nominal yield capacity of the bar
135, 136, 138, 141, 21, 23
a
d / d should be ≥ 0,2.
min max
The joints specified below are examples of good practice, see from 6.2 to 6.6. Other joint configurations
may be used if they can be shown to meet the requirements of Clause 11.
6.2 Butt joints
6.2.1 Butt joints welded by welding process 111, 114, 135, 136, 138 or 141
Examples of butt-joint preparation for load-bearing welded joints are given in Figure 1 a) to d). Other
joint preparations or types of permanent backing may also be used.
The prepared joint shall be bevelled. The joint preparation should be carried out by grinding or flame
cutting.
a) Double-V butt weld b) Single-V butt weld
c) Double-bevel butt weld d) Single-V butt weld with backing
Key
x root gap
y depth of root face
NOTE x or y depends on the welding process.
Figure 1 — Examples for the preparation of butt joints
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oSIST prEN ISO 17660:2021
ISO/DIS 17660:2021(E)
6.2.2 Butt joints welded by welding process 24, 25 or 42
For welding process 24 or 25, the misalignment of the bars shall not exceed 1 mm for nominal bar
diameters less than or equal to 10 mm, and 10 % of the nominal bar diameter for the other values.
For welding process 24 or 25, only bars with the same diameter shall be welded together.
For welding process 42, the maximum misalignment of the bars shall be specified.
6.2.3 Butt joints welded by welding process 47
The bars with different diameter shall not be welded in case that the difference of their nominal
diameter exceeds 7 mm.
The misalignment of the bars shall not exceed 20 % of the smaller nominal bar diameter of the two
welded bars.
An example of the joint preparation for welding process 47 is given in Figure 2.
Key
X root gap = 0 mm
Figure 2 — Example for the preparation of butt joints (Oxy-fuel gas pressure welding)
6.3 Lap joints
For load-bearing welded joints, lap joints using intermittent single-flare V-groove welds (asymmetric
force flow) shall be welded in accordance with Figure 3.
Key
1 weld
d , d nomin
...
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