SIST EN ISO 2553:2014
(Main)Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2013)
Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2013)
ISO 2553 defines the rules to be applied for symbolic representation of welded, brazed and soldered joints in metallic materials on technical drawings. This can include information about the geometry, manufacture, quality and testing of the welds. This International standard is a combined specification that recognizes that there are two different approaches in the global market to designate the arrow side and other side on drawings. It should be noted that: - Clauses, Tables and Figures which carry the suffix letter "A" are applicable only to the symbolic representation system based on the dual reference line; - Clauses, Tables and Figures which carry the suffix letter "B" are applicable only to the symbolic representation system based on the single reference line; - Clauses, Tables and Figures which do not have the suffix letter "A" or the suffix letter "B" are applicable to both systems.The symbols shown in this International Standard can be combined with other symbols used on technical drawings for example to show surface finish requirements.
Schweißen und verwandte Prozesse - Symbolische Darstellung in Zeichnungen - Schweiß- und Lötverbindungen (ISO 2553:2013)
Diese Internationale Norm legt Regeln fest, die in technischen Zeichnungen für die symbolische Darstellung von Schweiß und Lötnähten in metallischen Werkstoffen anzuwenden sind. Die Symbole können Angaben zur Geometrie, Herstellung, Qualität und Prüfung der Schweiß /Lötnähte beinhalten.
In dieser Internationalen Norm wird berücksichtigt, dass es auf dem Weltmarkt zwei unterschiedliche Methoden gibt, um in Zeichnungen die Pfeilseite und die Gegenseite zu kennzeichnen. Es sollte beachtet werden, dass:
- Abschnitte, Tabellen und Bilder mit dem Suffix „A“ nur für das System zutreffen, bei dem in den Symbolen eine doppelten Bezugslinie nach ISO 2553:1992 verwendet wird;
- Abschnitte, Tabellen und Bilder mit dem Suffix „B“ nur für das System zutreffen, bei dem in den Symbolen eine einfache Bezugslinie nach AWS A.2.4 verwendet wird;
- Abschnitte, Tabellen und Bilder, in denen weder der Suffix „A“ noch der Suffix „B“ angegeben ist, für beide Darstellungs¬systeme zutreffen.
In einer Zeichnung sollte entweder System A oder System B angewendet werden, und es muss eindeutig ersichtlich sein, welches System und welche Einheiten für die Eintragung der Maße nach ISO 129 1 (siehe auch 4.1) zutreffen.
Die in dieser Internationalen Norm angegebenen Symbole können mit anderen Symbolen kombiniert werden, die in technischen Zeichnungen angewendet werden, z. B. mit Symbolen zur Bezeichnung der Anforderungen an die Oberflächenbeschaffenheit.
In Abschnitt 7 wird ein alternatives Bezeichnungsverfahren beschrieben, das angewendet werden kann, um für Schweiß-/Lötverbindungen in Zeichnungen die wichtigsten Konstruktionsangaben festzulegen, z. B. Naht-maße, Bewertungsgruppe usw. Danach werden die Fugenform und das/die Schweißverfahren entsprechend der vorhandenen Produktionseinheit so bestimmt, dass die festgelegten Anforderungen zu erfüllen sind.
Soudage et techniques connexes - Représentations symboliques sur les dessins - Joints soudés (ISO 2553:2013)
L'ISO 2553:2013 définit les règles à suivre pour représenter symboliquement les joints soudés sur les dessins techniques. Cela peut inclure des informations sur la géométrie, la fabrication, la qualité et les essais des soudures. Les principes de la présente Norme internationale peuvent également être appliqués aux joints soudés et brasés.
L'ISO 2553:2013 reconnaît qu'il existe deux méthodes différentes sur le marché mondial pour désigner le côté ligne repère et le côté opposé à la ligne repère sur les dessins. Il convient de noter que les articles, tableaux et figures qui portent le suffixe «A» sont applicables uniquement au système de représentation symbolique fondé sur un double trait de référence; les articles, tableaux et figures qui portent le suffixe «B» sont applicables uniquement au système de représentation symbolique fondé sur un trait de référence simple; les articles, tableaux et figures qui ne portent ni le suffixe «A» ni le suffixe «B» sont applicables aux deux systèmes.
Les symboles donnés dans la présente Norme internationale peuvent être combinés à d'autres symboles utilisés sur les dessins techniques, par exemple pour indiquer les exigences de finition de surface.
Une autre méthode de désignation est donnée. Elle peut être utilisée pour représenter des joints soudés sur les dessins en spécifiant les informations essentielles de conception, tels que les dimensions de la soudure, le niveau de qualité, etc. La préparation du joint et le(s) procédé(s) de soudage sont ensuite déterminés par l'unité de production afin de satisfaire aux exigences spécifiées.
Varjenje in sorodni postopki - Prikazovanje na risbah s simboli - Varjeni spoji (ISO 2553:2013)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 2553:2014
01-marec-2014
1DGRPHãþD
SIST EN 22553:1995
SIST ISO 2553:1995
Varjenje in sorodni postopki - Prikazovanje na risbah s simboli - Varjeni spoji
(ISO 2553:2013)
Welding and allied processes - Symbolic representation on drawings - Welded joints
(ISO 2553:2013)
Schweißen und verwandte Prozesse - Symbolische Darstellung in Zeichnungen -
Schweiß- und Lötverbindungen (ISO 2553:2013)
Soudage et techniques connexes - Représentations symboliques sur les dessins - Joints
soudés (ISO 2553:2013)
Ta slovenski standard je istoveten z: EN ISO 2553:2013
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
25.160.40 Varjeni spoji in vari Welded joints
SIST EN ISO 2553:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 2553:2014
---------------------- Page: 2 ----------------------
SIST EN ISO 2553:2014
EUROPEAN STANDARD
EN ISO 2553
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2013
ICS 01.100.20; 25.160.40 Supersedes EN 22553:1994
English Version
Welding and allied processes - Symbolic representation on
drawings - Welded joints (ISO 2553:2013)
Soudage et techniques connexes - Représentations Schweißen und verwandte Prozesse - Symbolische
symboliques sur les dessins - Joints soudés (ISO Darstellung in Zeichnungen - Schweiß- und
2553:2013) Lötverbindungen (ISO 2553:2013)
This European Standard was approved by CEN on 20 December 2013.
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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same
status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2553:2013 E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 2553:2014
EN ISO 2553:2013 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
SIST EN ISO 2553:2014
EN ISO 2553:2013 (E)
Foreword
This document (EN ISO 2553:2013) 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 June 2014, and conflicting national standards shall be withdrawn at
the latest by June 2014.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 22553:1994.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2553:2013 has been approved by CEN as EN ISO 2553:2013 without any modification.
3
---------------------- Page: 5 ----------------------
SIST EN ISO 2553:2014
---------------------- Page: 6 ----------------------
SIST EN ISO 2553:2014
INTERNATIONAL ISO
STANDARD 2553
Fourth edition
2013-12-15
Welding and allied processes —
Symbolic representation on drawings
— Welded joints
Soudage et techniques connexes — Représentations symboliques sur
les dessins — Joints soudés
Reference number
ISO 2553:2013(E)
©
ISO 2013
---------------------- Page: 7 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
All rights reserved. Unless otherwise specified, 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 on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Welding symbol . 4
4.1 General . 4
4.2 Basic welding symbol . 4
4.3 Welding symbol systems . 5
4.4 Elementary symbols . 5
4.5 Supplementary symbols . 9
4.6 Arrow line .14
4.7 Reference line and weld location .16
4.8 Tail .19
5 Dimensioning of welds .19
5.1 General .19
5.2 Cross-sectional dimensions .19
5.3 Length dimensions .19
5.4 Butt welds .20
5.5 Fillet welds .21
5.6 Plug welds in circular holes .21
5.7 Plug welds in slots .21
5.8 Spot welds .22
5.9 Seam welds .22
5.10 Edge welds .22
5.11 Stud welds .22
5.12 Overlay welds .22
6 Dimensioning of joint preparations .34
6.1 General .34
6.2 Root gap .34
6.3 Included angle .34
6.4 Radii and root faces — U and J butt joints .35
6.5 Depth of joint preparation .35
6.6 Countersink angle for plug and slot welds .37
7 Alternative butt weld symbol with required weld quality .38
7.1 General .38
7.2 Example .38
Annex A (informative) Examples of the use of welding symbols .39
[9]
Annex B (informative) Tolerances and transition points for weld types .50
Annex C (informative) Alternative methods for designating intermittent butt and fillet welds .51
Bibliography .54
© ISO 2013 – All rights reserved iii
---------------------- Page: 9 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(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. 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. 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 on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC Welding and allied processes, Subcommittee SC 7,
Representation and terms.
This fourth edition cancels and replaces the third edition (ISO 2553:1992), which has been technically
revised.
Requests for official interpretations of any aspect of this standard should be directed to the Secretariat of
ISO/TC 44/SC 7 via your national standards body, a complete listing of which can be found at ww.iso.org.
iv © ISO 2013 – All rights reserved
---------------------- Page: 10 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
Introduction
The symbols given in this standard can be used on technical drawings for welded components. Design-
related specifications, such as type, thickness, and length of weld, weld quality, surface treatment, filler
material and testing specifications, can be indicated directly at the weld by means of the symbols given
in this standard. The principals of this standard can be applied to brazed and soldered joints.
Clarity may be improved by references to collective information in the drawings or references to
additional design-related documents.
Preparation for production may require detailed welding-related planning. The type of representation
described in this standard can be used for this purpose and complemented by additional production-
related information (e.g. welding position, welding process, WPS, weld preparation, preheating …).
This information is often given in production-related documents, such as work schedules or welding
procedure specifications (WPS).
Technical drawings are intended to clearly and understandably illustrate design-related specifications.
Welding-related drawings should be prepared and checked by specially trained personnel (see ISO 14731).
This edition of ISO 2553 recognizes that there are two different approaches in the global market to
designate the arrow side and other side on drawings, and allows for either to be used in isolation, to suit
a particular market need. Application of either approach identifies a welding symbol in accordance with
this International Standard. The approach in accordance with system A is based on ISO 2553:1992. The
approach in accordance with system B is based upon standards used by Pacific Rim countries.
© ISO 2013 – All rights reserved v
---------------------- Page: 11 ----------------------
SIST EN ISO 2553:2014
---------------------- Page: 12 ----------------------
SIST EN ISO 2553:2014
INTERNATIONAL STANDARD ISO 2553:2013(E)
Welding and allied processes — Symbolic representation
on drawings — Welded joints
1 Scope
This International Standard defines the rules to be applied for symbolic representation of welded joints
on technical drawings. This may include information about the geometry, manufacture, quality and
testing of the welds. The principles of this standard may also be applied to soldered and brazed joints.
It is recognized that there are two different approaches in the global market to designate the arrow side
and other side on drawings. In this Interational Standard:
— clauses, tables and figures which carry the suffix letter “A” are applicable only to the symbolic
representation system based on a dual reference line;
— clauses, tables and figures which carry the suffix letter “B” are applicable only to the symbolic
representation system based on a single reference line;
— clauses, tables and figures which do not have the suffix letter “A” or “B” are applicable to both systems.
The symbols shown in this International Standard may be combined with other symbols used on
technical drawings, for example to show surface finish requirements.
An alternative designation method is presented which may be used to represent welded joints on
drawings by specifying essential design information such as weld dimensions, quality level, etc. The
joint preparation and welding process(es) are then determined by the production unit in order to meet
the specified requirements.
NOTE Examples given in this International Standard, including dimensions, are illustrative only and are
intended to demonstrate the proper application of principles. They are not intended to represent good design
practices, or to replace code or specification requirements.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 128 (all parts), Technical drawings — General principles of presentation
ISO 129-1, Technical drawings — Indication of dimensions and tolerances — Part 1: General principles
ISO 1302, Geometrical Product Specifications (GPS) — Indication of surface texture in technical product
documentation
ISO 3098-2, Technical product documentation — Lettering — Part 2: Latin alphabet, numerals and marks
ISO 4063, Welding and allied processes — Nomenclature of processes and reference numbers
ISO/TR 25901:2007, Welding and related processes — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 25901 and the following apply.
© ISO 2013 – All rights reserved 1
---------------------- Page: 13 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
3.1
welding symbol
symbol consisting of an arrow line and a reference line and which may also include elementary and
supplementary symbols, dimensions and/or tail, used on technical drawings to indicate welded joint
type, location and joint preparation
Note 1 to entry: See Clause 4.
3.2
basic welding symbol
symbol consisting of an arrow line, reference line and tail used when the joint is not specified and only
to indicate that a welded joint is to be made
Note 1 to entry: See 4.2.
3.3
arrow line
leader line used to indicate the joint that is to be welded generally drawn at 135° to the reference line
Note 1 to entry: See 4.6.
3.4
reference line
part of the welding symbol on which the elementary symbol is located, generally drawn parallel to the
bottom edge of the drawing
Note 1 to entry: See 4.7.
3.5
tail
V shaped element added to the end of the continuous reference line away from the arrow line
Note 1 to entry: See 4.8.
3.6
arrow side
side of the joint to which the arrow line is pointing
Note 1 to entry: See 4.7.2.1.
3.7
other side
opposite side of the joint to the arrow side
Note 1 to entry: See 4.7.2.1.
3.8
elementary symbol
symbol forming part of the welding symbol and drawn on the reference line to indicate the type of weld
and joint preparation
Note 1 to entry: See 4.4.
3.9
supplementary symbol
symbol used in conjunction with elementary symbols to convey additional information about the joint
Note 1 to entry: See 4.5.
2 © ISO 2013 – All rights reserved
---------------------- Page: 14 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
3.10
complementary information
non-symbolic information, relevant to the welds being made, which may be included in the tail of the
welding symbol
Note 1 to entry: See 4.8.
3.11
intermittent weld
series of weld elements made at intervals along a joint
[SOURCE: ISO/TR 25901:2007]
Note 1 to entry: See 5.3.2.
3.11.1
chain intermittent weld
intermittent weld on each side of a joint (usually fillet welds in T and lap joints) arranged so that the
welds lie opposite one another along the joint
Note 1 to entry: See 5.3.2.2.
3.11.2
staggered intermittent weld
intermittent weld on each side of a joint (usually fillet welds in T and lap joints) arranged so that the
welds on one side lie opposite to the spaces on the other side along the joint
Note 1 to entry: See 5.3.2.3.
3.12
offset
distance between the start of welding on one side of a staggered intermittent weld made on both sides
of the joint and the start of welding on the other side
Note 1 to entry: See 5.3.2.3, Table 3 and Table 5, No 2.6.
3.13
back run
final run deposited on the root side of a fusion weld
3.14
backing weld
backing in the form of a weld
3.15
nominal weld length
design length of a weld
3.15.1
nominal length of weld elements
in intermittent welds, the design length of the elements of the weld
3.16
nominal throat thickness
a
design value of the height of the largest isosceles triangle that can be inscribed in the section of a fillet weld
Note 1 to entry: Other design throat thicknesses may be used, but need to be specified.
© ISO 2013 – All rights reserved 3
---------------------- Page: 15 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
3.17
leg length
z
distance from the actual or projected intersection of the fusion faces and the toe of a fillet weld, measured
across the fusion face
3.18
penetration depth
thickness of the weld metal excluding any reinforcement
3.19
deep penetration throat thickness
s
nominal or effective throat thickness to which a certain amount of fusion penetration is added
3.20
flare-bevel weld
butt weld between a joint member with a curved surface and another with a planar surface
Note 1 to entry: See Table 5.
3.21
flare-V weld
butt weld between two members with curved surfaces
Note 1 to entry: See Table 5.
3.22
field weld
weld made outside workshops usually at the place of final installation
4 Welding symbol
4.1 General
A reference line and arrow line are required elements. Additional elements may be included to convey
specific information.
It is preferable that the welding symbol is shown on the same side of the joint that the weld is to be made,
i.e. the arrow side (see 4.6).
The thickness of the arrow lines, reference line, elementary symbols and lettering shall be in accordance
with ISO 128 and ISO 3098-2.
In order not to overburden drawings, reference should be made to notes in the drawing or other design-
related documents.
4.2 Basic welding symbol
If joint details are not specified and the only requirement is to indicate that a joint is to be welded, the
basic symbol shown in Figure 1 may be used. In this case, a dual reference line is not required for system
A (see 4.6.1A) as no details concerning the weld are being conveyed.
The basic welding symbol shall comprise an arrow line, reference line and a tail.
4 © ISO 2013 – All rights reserved
---------------------- Page: 16 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
Key
1 arrow line
2 reference line
3 tail
NOTE This symbol is often used to indicate the location of tack welds.
Figure 1 — Basic welding symbol (joint details and type not specified)
4.3 Welding symbol systems
This International standard recognizes two different systems, A and B, to designate the arrow side and
other side on drawings.
The symbolic representation in system A is based on a dual reference line consisting of a continuous line
and a dashed line (see 4.7).
The symbolic representation in system B is based on a single reference line (see 4.7).
Clauses, Tables and Figures which carry the suffix “A” or “B” are applicable only to system A or system
B respectively.
Clauses, tables and figures which do not have a suffix are applicable to both systems.
System A and B shall not be mixed and drawings shall clearly indicate which system is used including
units of measurement in accordance with ISO 129-1.
Examples of comprehensive welding symbols showing the location of elements are given in Figure A.1.
4.4 Elementary symbols
4.4.1 General
Elementary symbols, in accordance with Table 1, can be added to the reference line in both systems A
and B to indicate the type of weld to be made.
Elementary symbols form part of the welding symbol and shall be drawn attached to the reference line
generally at the mid-point.
Elementary symbols may be complemented by:
— supplementary symbols (see 4.5 and Table 3);
— dimensions (see Clause 5);
— complementary information.
The orientation of the elementary symbols shall not be changed to that shown.
Annex B gives guidance on tolerances and transition points for butt welds, edge welds and fillet welds.
© ISO 2013 – All rights reserved 5
---------------------- Page: 17 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
If clear illustration by means of symbols is not possible, cross sections of the welds may be drawn
and dimensioned.
Table 1 — Elementary symbols
a
No. Designation Illustration Symbol
(dashed lines show joint preparation prior to welding)
b
1 Square butt
b
2 Single-V butt
Single-V butt with
3
b
broad root face
b
4 Single-bevel butt
Single-bevel butt
5 with broad root
b
face
b
6 Single-U butt
b
7 Single-J butt
8 Flare V
9 Flare bevel
a
The grey line is not part of the symbol. It indicates the position of the reference line.
b
Butt welds are full penetration unless otherwise indicated by dimensions on the welding symbol or by reference to
other information, for example the WPS.
c
May be used for joints with more than 2 members.
6 © ISO 2013 – All rights reserved
---------------------- Page: 18 ----------------------
SIST EN ISO 2553:2014
ISO 2553:2013(E)
Table 1 (continued)
a
No. Designation Illustration Symbol
(dashed lines show joint preparation prior to welding)
10 Fillet
Plug (in slots or
11
circular holes)
Resistance spot
(including projec-
12
tion welding in
system A)
Fusion spot (and
13 projection welding
in system B)
14 Resistance seam
15 Fusion seam
16 Stud
Steep-flanked
17
b
single-V butt
Steep-flanked
18
b
single-bevel butt
a
The grey line is not part of the symbol. It indicates the position of the reference line.
b
Butt welds are full penetration unless otherwise indicated by dimensions on the welding symbol or by reference to
other information, for example the WPS.
c
May be used for
...
SLOVENSKI STANDARD
oSIST prEN ISO 2553:2011
01-junij-2011
Varjenje in sorodni postopki - Prikazovanje na risbah s simboli - Varjeni in
spajkani spoji (ISO/DIS 2553:2011)
Welding and allied processes - Symbolic representation on drawings - Welded, brazed
and soldered joints (ISO/DIS 2553:2011)
Schweißen und verwandte Prozesse - Symbolische Darstellung in Zeichnungen -
Schweiß- und Lötverbindungen (ISO/DIS 2553:2011)
Soudage et techniques connexes - Représentations symboliques sur les dessins - Joints
soudés et brasés (ISO/DIS 2553:2011)
Ta slovenski standard je istoveten z: prEN ISO 2553
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
25.160.40 Varjeni spoji in vari Welded joints
oSIST prEN ISO 2553:2011 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
oSIST prEN ISO 2553:2011
---------------------- Page: 2 ----------------------
oSIST prEN ISO 2553:2011
EUROPEAN STANDARD
DRAFT
prEN ISO 2553 rev
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2011
ICS 25.160.40; 01.100.20 Will supersede EN 22553:1994
English Version
Welding and allied processes - Symbolic representation on
drawings - Welded, brazed and soldered joints (ISO/DIS
2553:2011)
Soudage et techniques connexes - Représentations Schweißen und verwandte Prozesse - Symbolische
symboliques sur les dessins - Joints soudés et brasés Darstellung in Zeichnungen - Schweiß- und
(ISO/DIS 2553:2011) Lötverbindungen (ISO/DIS 2553:2011)
This draft European Standard is submitted to CEN members for parallel enquiry. It has been drawn up by the Technical Committee
CEN/TC 121.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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 CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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.
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.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2011 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN ISO 2553 rev:2011: E
worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN ISO 2553:2011
prEN ISO 2553:2011 (E)
Contents Page
Foreword .3
2
---------------------- Page: 4 ----------------------
oSIST prEN ISO 2553:2011
prEN ISO 2553:2011 (E)
Foreword
This document (prEN ISO 2553:2011) 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 document is currently submitted to the parallel Enquiry.
This document will supersede EN 22553:1994.
Endorsement notice
The text of ISO/DIS 2553:2011 has been approved by CEN as a prEN ISO 2553:2011 without any
modification.
3
---------------------- Page: 5 ----------------------
oSIST prEN ISO 2553:2011
---------------------- Page: 6 ----------------------
oSIST prEN ISO 2553:2011
DRAFT INTERNATIONAL STANDARD ISO/DIS 2553
ISO/TC 44/SC 7 Secretariat: BSI
Voting begins on Voting terminates on
2011-04-07 2011-09-07
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Welding and allied processes — Symbolic representation
on drawings — Welded, brazed and soldered joints
Soudage et techniques connexes — Représentations symboliques sur les dessins — Joints soudés et brasés
[Revision of third edition (ISO 2553:1992)]
ICS 01.100.20; 25.160.40
ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.
To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED 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 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 NATIONAL REGULATIONS.
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.
© International Organization for Standardization, 2011
---------------------- Page: 7 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2011 – All rights reserved
---------------------- Page: 8 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
Contents Page
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Welding symbol . 4
4.1 General . 4
4.2 Basic welding symbol . 4
4.3 Elementary symbols . 4
4.3.1 General . 4
4.3.2 Combinations of elementary symbols . 8
4.3.3 Symmetrical welds . 9
4.3.4 Asymmetrical welds . 9
4.4 Supplementary symbols . 10
4.4.1 General . 10
4.4.2 Peripheral welds . 12
4.4.3 Circumferential welds . 12
4.4.4 Welds of the same type made from point to point . 13
4.4.5 Site welds . 13
4.4.6 Root reinforcement – butt welds and edge welds . 13
4.5 Arrow line . 16
4.5.1 General . 16
4.5.2 Multiple arrow lines. 16
4.5.3 Broken arrow line . 17
4.6 Reference line and weld location . 17
4.6.1 Reference line . 17
4.6.2 Weld location . 17
4.6.3 Multiple reference lines . 19
4.7 Tail. 19
5 Dimensioning of welds . 20
5.1 General . 20
5.2 Cross sectional dimensions . 20
5.3 Length dimensions . 20
5.3.1 General . 20
5.3.2 Weld location . 20
5.3.3 Intermittent welds . 20
5.4 Butt welds . 21
5.4.1 Weld size . 21
5.4.2 Symmetrical butt welds . 21
5.4.3 Asymmetrical butt welds . 21
5.4.4 Edge welds on flanged butt and flanged corner joints . 21
5.4.5 Flare bevel and flare V butt welds . 21
5.5 Fillet welds. 22
5.5.1 Weld size . 22
5.5.2 Deep penetration fillet welds . 22
5.6 Plug welds . 22
5.7 Slot welds . 22
5.8 Spot welds . 23
5.9 Seam welds . 23
5.10 Edge welds . 23
© ISO 2010 – All rights reserved iii
DRAFT 2011
---------------------- Page: 9 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
5.11 Stud welds . 23
5.12 Surfacing welds . 23
6 Joint dimensions and geometry prior to welding . 41
6.1 General . 41
6.2 Root opening . 41
6.3 Included angle . 42
6.4 Radii and root faces - U and J butt joints . 43
6.5 Depth of joint preparation . 43
6.6 Countersink angle for plug and slot welds . 43
7 Method of symbolic representation of essential design information . 45
7.1 General . 45
7.2 Symbols and information to be provided . 48
7.3 Examples . 48
Annex A (informative) Examples of the use of welding symbols . 50
Annex B (informative) Tolerances and transitions points for weld types . 62
Annex C (informative) AWS A2.4 methods for designating intermittent welds . 63
Annex D (informative) Designation of welds of the same type made from point to point . 66
Bibliography . 67
iv © ISO 2010 – All rights reserved
DRAFT 2011
---------------------- Page: 10 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
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.
ISO 2553 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee
SC 7, Representation and terms.
This fourth edition cancels and replaces the third edition (ISO 2553:1992) which has been technically revised.
Requests for official interpretations of any aspect of this standard should be directed to the Secretariat of
ISO/TC 44/SC 7 via your national standards body, a complete listing of which can be found at ww.iso.org.
© ISO 2010 – All rights reserved v
DRAFT 2011
---------------------- Page: 11 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
Introduction
The symbols included in this standard are intended to facilitate communication between the designer, the fabrication
shop and examination and inspection personnel. The symbols can be combined with other drawing symbols and
may also be supplemented by additional information. However, the symbols cannot always provide all the
information necessary in order to ensure that a fabrication is viable.
It is essential that throughout all stages of production, from product conception and design through to manufacture,
that there is adequate interaction between all personnel and departments concerned. The designer should be
familiar with the limitations of the joining and non-destructive testing processes and know how to specify adequate
welded, brazed or soldered joint sizes. The fabrication and inspection personnel may advise the designer on joining
processes and requirements for examination and testing. It may be that a designer wishes to place one or more
welded, brazed or soldered joints in a particular position that the production personnel, for one reason or another,
cannot produce. It may be that the positioning of the welded, brazed or soldered joints, as defined by the designer,
may be cost prohibitive and may have to be moved elsewhere by changing the design.
It is important that all these issues are resolved before production starts in order to avoid costly redesign and/or
rework.
As with all standards, training and familiarisation with the usage of the symbols in this document is paramount. It
has been assumed, in the drafting of this International Standard, its usage shall be entrusted to appropriately
qualified and experienced personnel.
Using an incorrect symbol can lead to confusion and delay whilst the drawing is checked. Similarly, personnel who
are not familiar with the symbols may need to spend time checking on their meaning. In both instances, any
incorrectly made welded, brazed or soldered joints may result in costly rework.
ISO 2553 recognizes that there are two somewhat different approaches in the global market to designate the arrow
side and other side on drawings, and allows for either to be used in isolation, to suit a particular market need.
Application of either approach identifies a welding symbol in accordance with this International Standard. The
approach in accordance with system A is based on ISO 2553:1992. The approach in accordance with system B is
based upon AWS A2.4.
vi © ISO 2010 – All rights reserved
DRAFT 2011
---------------------- Page: 12 ----------------------
oSIST prEN ISO 2553:2011
DRAFT INTERNATIONAL STANDARD ISO/DIS 2553
Welding and allied processes — Symbolic representation
on drawings — Welded, brazed and soldered joints
1 Scope
This International Standard defines the rules to be applied for symbolic representation of welded, brazed and
soldered joints in metallic materials on technical drawings. This can include information about the geometry,
manufacture, quality and testing of the welds.
This International standard is a combined specification that recognizes that there are two different approaches in the
global market to designate the arrow side and other side on drawings. It should be noted that:
Clauses, Tables and Figures which carry the suffix letter "A" are applicable only to the symbolic representation
system based on the dual reference line from ISO 2553:1992;
Clauses, Tables and Figures which carry the suffix letter "B" are applicable only to the symbolic representation
system based on the single reference line from AWS A2.4;
Clauses, Tables and Figures which do not have the suffix letter "A" or the suffix letter "B" are applicable to both
systems.
Systems A and B should not be mixed and drawings shall clearly indicate which system is used as well as units of
measurement in accordance with ISO 129-1 (see also 4.1).
The symbols shown in this International Standard can be combined with other symbols used on technical drawings
for example to show surface finish requirements.
Clause 7 describes an alternative designation method which can be used to represent welded joints on drawings by
specifying essential design information, e.g. weld dimensions, quality level etc. The joint preparation and welding
process(es) are then determined by the production unit in order to meet the specified requirements.
NOTE Examples given in this International Standard, including dimensions, are illustrative only and are intended to
demonstrate the proper application of principles. They are not intended to represent good design practices, or to replace code or
specification requirements.
2 Normative references
The following referenced documents are indispensable for the application 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 128, Technical drawings – General principles of presentation
ISO 129-1, Technical drawings – Indication of dimensions and tolerances – Part 1: General principles
ISO 1302, Geometrical Product Specifications (GPS) – Indication of surface texture in technical product
documentation
ISO 3098-2, Technical product documentation – Lettering – Part 2: Latin alphabet, numerals and marks
ISO 4063, Welding and allied processes – Nomenclature of processes and reference numbers
ISO 17659, Welding — Multilingual terms for welded joints with illustrations
1 © ISO 2010 – All rights reserved
DRAFT 2011
---------------------- Page: 13 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
ISO/TR 25901:2007, Welding and related processes — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 17659, ISO/TR 25901:2007 and the
following apply.
3.1
welding symbol
symbol consisting of an arrow line and a reference line and which may also include elementary and supplementary
symbols and/or tail, used on technical drawings to indicate welded brazed or soldered joint type, location and joint
preparation
NOTE 1 See Clause 4.
3.2
basic welding symbol
symbol consisting of an arrow line, reference line and tail used when the joint is not specified and only to indicate
that a welded, brazed or soldered joint is to be made
NOTE 1 See Figure 1.
NOTE 2 Often used to indicate the location of tack welds.
3.3
arrow line
element of the welding symbol that is used to indicate the joint that is to be welded, brazed or soldered, generally
drawn at 135° to the reference line
NOTE 1 See 4.5.
NOTE 2 The arrow line may be drawn at 45° to the reference line where space does not permit use of 135°.
3.4
reference line
element of the welding symbol on which the elementary symbol is located, generally drawn parallel to the bottom
edge of the drawing
NOTE See 4.6.
3.4.1
continuous line
solid element of the reference line
NOTE The continuous line is used in conjunction with a dashed line (system A) or alone (system B and system A
symmetrical welds).
3.4.2
dashed line
component of the reference line used to identify the other side of the joint to where the arrow line is pointing and
which can be drawn either above or below the continuous line
NOTE 1 The dashed line is ONLY used in accordance with system A and in conjunction with a continuous line.
NOTE 2 It is preferred that the dashed line be drawn below the continuous line.
3.5
tail
V shaped element added to the end of the continuous reference line away from the arrow line
2 © ISO 2010 – All rights reserved
DRAFT 2011
---------------------- Page: 14 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
NOTE See 4.7.
3.6
arrow side
the side of the joint to which the arrow line is pointing
NOTE See 4.6.2.1.
3.7
other side
the opposite side of the joint to which the arrow line is pointing
NOTE See 4.6.2.1.
3.8
elementary symbol
symbol forming part of the welding symbol and drawn on the reference line to indicate the type of weld and joint
preparation
NOTE See 4.3.
3.9
supplementary symbol
symbol used in conjunction with elementary symbols to convey more information about the joint
NOTE See 4.4.
3.10
complementary information
non symbolic information, relevant to the welds being made, which may be included in the tail of the welding symbol
NOTE See 4.7.
3.11
intermittent weld
series of welds made at intervals along a joint [ISO/TR 25901:2007]
NOTE See 5.3.3.
3.11.1
chain intermittent weld
intermittent weld on both sides of a joint in which the welds on one side are approximately opposite those on the
other side
NOTE See 5.3.3.2.
3.11.2
staggered intermittent weld
intermittent weld on both sides of a joint in which the welds on one side are alternated with respect to those on the
other side
NOTE See 5.3.3.3.
3.12
offset
the distance between the start of welding on one side of a staggered intermittent weld made on both sides of the
joint and the start of welding on the other side
NOTE 1 See 5.3.3.3, Table 3 and Table 6, No 2.6.
© ISO 2010 – All rights reserved 3
DRAFT 2011
---------------------- Page: 15 ----------------------
oSIST prEN ISO 2553:2011
ISO/DIS 2553
NOTE 2 If the centres of the welds on one side of the joint correspond with the centres of the gaps on the opposite side of the
joint, offset need not be specified.
4 Welding symbol
4.1 General
The reference line and arrow line are required elements. Additional elements may be included to convey specific
information.
It is preferable that the welding symbol is shown on the same side of the joint that the weld is to be made, i.e. the
arrow side (see 4.6).
The thickness of the arrow lines, reference line, weld symbols and lettering shall be in accordance with ISO 128 and
ISO 3098-2.
NOTE In order not to overburden drawings, additional information should be conveyed by other means for example; by
drawing notes or details; references to standards and welding procedure specification
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.