EN ISO 2553:2019

Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2019, Corrected version 2021-09)

This document defines the rules to be applied for symbolic representation of welded joints on technical drawings. This can include information about the geometry, manufacture, quality and testing of the welds. The principles of this document can 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 document:
—          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 document can be combined with other symbols used on technical drawings, for example to show surface finish requirements.
An alternative designation method is presented which can 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 document, including dimensions, are illustrative only and are intended to demonstrate the proper application of principles.

Schweißen und verwandte Prozesse - Symbolische Darstellung in Zeichnungen - Schweißverbindungen (ISO 2553:2019, korrigierte Fassung 2021-09)

Dieses Dokument legt die Regeln fest, die in technischen Zeichnungen für die symbolische Darstellung von Schweißnähten anzuwenden sind. Die Symbole können Angaben zur Geometrie, Herstellung, Qualität und Prüfung der Schweißnähte enthalten. Die Grundsätze dieses Dokuments können auch für weich- und hartgelötete Verbindungen verwendet werden.
Es wird die Tatsache berücksichtigt, dass es auf dem Weltmarkt zwei unterschiedliche Methoden gibt, um in Zeichnungen die Pfeilseite und die Gegenseite zu kennzeichnen. In diesem Dokument
- gelten Abschnitte, Tabellen und Bilder mit dem Suffix "A" nur für das System, bei dem in den Symbolen eine doppelte Bezugslinie verwendet wird,
- gelten Abschnitte, Tabellen und Bilder mit dem Suffix "B" nur für das System, bei dem in den Symbolen eine einfache Bezugslinie verwendet wird,
- gelten Abschnitte, Tabellen und Bilder, in denen weder der Suffix "A" noch der Suffix "B" angegeben ist, für beide Darstellungssysteme.
Die in diesem Dokument angegebenen Symbole können mit anderen Symbolen kombiniert werden, die in technischen Zeichnungen angewendet werden, z. B. um Anforderungen an die Oberflächenbeschaffenheit darzustellen.
Ein alternatives Bezeichnungsverfahren wird beschrieben, das angewendet werden kann, um Schweißverbindungen in Zeichnungen durch Festlegung der wichtigsten Konstruktionsangaben, z. B. Nahtmaße, Bewertungsgruppen usw., darzustellen Die Schweißnahtvorbereitung und der/die Schweißprozess(e) werden anschließend von dem Hersteller so festgelegt, dass die festgelegten Anforderungen erfüllt werden.
ANMERKUNG Die in diesem Dokument angegebenen Beispiele, einschließlich der Maße, dienen nur zur Veranschaulichung der korrekten Anwendung der Grundsätze.

Soudage et techniques connexes - Représentations symboliques sur les dessins - Assemblages soudés (ISO 2553:2019, Version corrigée 2021-09)

Le présent document 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 du présent document peuvent également être appliqués aux joints soudés et brasés.
Le présent document 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 le présent document 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, telles 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.
NOTE       Les exemples du présent document, y compris les dimensions, ne sont donnés qu'à titre d'illustration et sont destinés à montrer l'application appropriée des principes.

Varjenje in sorodni postopki - Prikazovanje s simboli na risbah - Varjeni spoji (ISO 2553:2019)

Ta dokument določa pravila za prikazovanje varjenih spojev na tehničnih risbah s simboli. To lahko vključuje podatke o geometriji, izdelavi, kakovosti in preskušanju zvarov. Načela tega dokumenta je mogoče uporabiti tudi pri spajkanih in trdo spajkanih spojih.
Na svetovnem trgu obstajata na risbah dva različna pristopa za označevanje na strani s puščico in na drugi strani. V tem dokumentu:
– točke, preglednice in številke s črko »A« se uporabljajo samo za sistem simboličnega predstavljanja, ki temelji na dvojni referenčni vrstici;
– točke, preglednice in številke s črko »B« se uporabljajo samo za sistem simboličnega predstavljanja, ki temelji na enojni referenčni vrstici;
– točke, preglednice in številke brez dodane črke »A« ali »B« se uporabljajo za oba sistema.
Simbole, prikazane v tem dokumentu, je mogoče kombinirati z drugimi simboli, ki se uporabljajo na tehničnih risbah, na primer za prikaz zahtev glede površinske obdelave.
Predstavljena je alternativna metoda označevanja, ki jo je mogoče uporabiti za predstavljanje varjenih spojev na risbah z navedbo bistvenih informacij o konstrukciji, kot so mere vara, raven kakovosti itd. Da so zahteve izpolnjene, poskrbi proizvodna enota, ki določi postopek izdelave in varjenja.
OPOMBA: Primeri v tem dokumentu, vključno z merami, so zgolj ilustrativni in namenjeni
ponazoritvi pravilne uporabe načel.

General Information

• Status: Published
• Publication Date: 16-Apr-2019
• Withdrawal Date: 30-Oct-2019
• ICS: 01.100.20 - Mechanical engineering drawings
• ICS: 25.160.40 - Welded joints and welds
• Technical Committee: CEN/TC 121 - Welding
• Drafting Committee: CEN/TC 121 - Welding
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 17-Apr-2019
• Completion Date: 17-Apr-2019
• Directive: 2014/29/EU - Directive 2014/29/EU of The European Parliament and of the Council of 26 February 2016 on the harmonisation of the laws of the Member States relating to the making available on the market of simple pressure vessels
• Mandate: M/BC/CEN/89/2 - Standardization mandate to CEN concerning supporting standards in the context of pressure vessels
• Ref Project: SIST EN ISO 2553:2019 - Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2019)

Relations

• Replaces: EN ISO 2553:2013 - Welding and allied processes - Symbolic representation on drawings - Welded joints (ISO 2553:2013)
• Effective Date: 24-Apr-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2019
Nadomešča:
SIST EN ISO 2553:2014
Varjenje in sorodni postopki - Prikazovanje s simboli na risbah - Varjeni spoji (ISO
2553:2019)
Welding and allied processes - Symbolic representation on drawings - Welded joints
(ISO 2553:2019)
Schweißen und verwandte Prozesse - Symbolische Darstellung in Zeichnungen -
Schweißverbindungen (ISO 2553:2019)
Soudage et techniques connexes - Représentations symboliques sur les dessins - Joints
soudés (ISO 2553:2019)
Ta slovenski standard je istoveten z: EN ISO 2553:2019
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 2553
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2019
EUROPÄISCHE NORM
ICS 01.100.20; 25.160.40 Supersedes EN ISO 2553:2013
English Version
Welding and allied processes - Symbolic representation on
drawings - Welded joints (ISO 2553:2019)
Soudage et techniques connexes - Représentations Schweißen und verwandte Prozesse - Symbolische
symboliques sur les dessins - Assemblages soudés (ISO Darstellung in Zeichnungen - Schweißverbindungen
2553:2019) (ISO 2553:2019)
This European Standard was approved by CEN on 22 March 2019.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2553:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 2553:2019) has been prepared by Technical Committee ISO/TC 44 "Welding
and allied processes" in collaboration with Technical Committee CEN/TC 121 “Welding and allied
processes” 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 2019, and conflicting national standards shall
be withdrawn at the latest by October 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2553:2013.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2553:2019 has been approved by CEN as EN ISO 2553:2019 without any modification.

INTERNATIONAL ISO
STANDARD 2553
Fifth edition
2019-03
Welding and allied processes —
Symbolic representation on drawings
— Welded joints
Soudage et techniques connexes — Représentations symboliques sur
les dessins — Assemblages soudés
Reference number
ISO 2553:2019(E)
©
ISO 2019
ISO 2553:2019(E)
© ISO 2019
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
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 2553:2019(E)
Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Welding symbol . 5
4.1 General . 5
4.2 Basic welding symbol . 5
4.3 Welding symbol systems . 6
4.4 Elementary symbols . 6
4.4.1 General. 6
4.4.2 Combinations of elementary symbols . 9
4.4.3 Double-sided butt welds . 9
4.5 Supplementary symbols .10
4.5.1 General.10
4.5.2 Weld-all-around symbol .13
4.5.3 Welds of the same type made from point to point .14
4.5.4 Field welds .15
4.5.5 Root reinforcement — Butt welds made from one side .15
4.5.6 Welds on flanged butt and flanged corner joints .15
4.6 Arrow line .17
4.6.1 General.17
4.6.2 Multiple arrow lines .17
4.6.3 Broken arrow line .17
4.7 Reference line and weld location .18
4.7.1 Reference line .18
4.7.2 Weld location .18
4.7.3 Multiple reference lines .19
4.8 Tail .20
5 Dimensioning of welds .21
5.1 General .21
5.2 Cross-sectional dimensions .21
5.3 Length dimensions .21
5.3.1 General.21
5.3.2 Intermittent welds.21
5.4 Butt welds .22
5.4.1 Penetration depth .22
5.4.2 Double-sided welds .22
5.4.3 Flanged butt welds .22
5.4.4 Flare bevel and flare-V butt welds .22
5.5 Fillet welds .22
5.5.1 Weld size .22
5.5.2 Deep penetration fillet welds .22
5.6 Plug welds in circular holes .23
5.7 Plug welds in elongated holes (slots) .23
5.8 Spot welds .23
5.9 Seam welds .
...