EN ISO 128-2:2022

Technical product documentation (TPD) - General principles of representation - Part 2: Basic conventions for lines (ISO 128-2:2022)

This document establishes the types of lines used in technical drawings (e.g. diagrams, plans or maps), their designations and their configurations, as well as general rules for the draughting of lines. In addition, this document specifies general rules for the representation of leader and reference lines and their components as well as for the arrangement of instructions on or at leader lines in technical documents. Annexes have been provided for specific information on mechanical, construction and shipbuilding technical drawings.
For the purposes of this document the term “technical drawing” is interpreted in the broadest possible sense, encompassing the total package of documentation specifying the product (workpiece, subassembly, assembly).

Technische Produktdokumentation (TPD) - Allgemeine Grundlagen der Darstellung - Teil 2: Linien, Grundregeln (ISO 128-2:2022)

Dieses Dokument legt die Linienarten, die in technischen Zeichnungen (z. B. Diagramme, Pläne oder Karten) verwendet werden, ihre Bezeichnungen und ihre Konfigurationen sowie allgemeine Regeln für das Zeichnen von Linien fest. Darüber hinaus legt dieses Dokument allgemeine Regeln zur Darstellung von Hinweis- und Bezugslinien und deren Komponenten sowie zur Anordnung von Anforderungen zu oder an Hinweislinien in technischen Dokumenten fest. Anhänge mit spezifischen Informationen zu technischen Zeichnungen der mechanischen Technik, des Bauwesens und des Schiffbaus werden zur Verfügung gestellt.
Für die Anwendung dieses Dokuments wird der Begriff „technische Zeichnung“ so allgemein wie möglich ausgelegt und umfasst das Gesamtpaket der Dokumentation zum Produkt (Werkstück, Unterbaugruppe, Baugruppe).

Documentation technique de produits (TPD) - Principes généraux de représentation - Partie 2: Conventions de base pour les traits (ISO 128-2:2022)

Le présent document établit les types de traits utilisés dans les dessins techniques (par exemple schémas, plans ou cartes), leurs désignations et leurs configurations, ainsi que les règles générales pour le tracé de traits. De plus, le présent document spécifie des règles générales pour la représentation des lignes repères et traits de référence et leurs composants, ainsi que pour la disposition des instructions sur ou aux lignes repères dans les documents techniques. Des annexes ont été prévues pour des informations spécifiques sur les dessins industriels, dessins de construction et dessins de construction navale.
Pour les besoins du présent document, le terme «dessin technique» est interprété au sens le plus large possible, englobant l'ensemble de la documentation spécifiant le produit (pièce, sous-ensemble, ensemble).

Tehnična dokumentacija izdelkov - Splošna načela prikazovanja - 2. del: Osnovni dogovori za črte (ISO 128-2:2022)

Ta dokument določa vrste črt, ki se uporabljajo na tehničnih risbah (npr. diagramih, načrtih ali zemljevidih), njihove oznake in konfiguracije ter splošna pravila za skiciranje črt.
Poleg tega dokument določa tudi splošna pravila za prikazovanje kazalnih in referenčnih črt ter njihovih elementov kot tudi za ureditev navodil glede kazalnih črt v tehničnih dokumentih. Podani so dodatki za specifične informacije o tehničnih risbah v strojništvu, gradbeništvu in ladjedelništvu.
Za namene tega dokumenta ima izraz »tehnična risba« najširši možni pomen, ki zajema celotno dokumentacijo o proizvodu (obdelovanec, podsestav, sestav).

General Information

• Status: Published
• Publication Date: 01-Nov-2022
• ICS: 01.100.01 - Technical drawings in general
• Technical Committee: CEN/SS F01 - Technical drawings
• Drafting Committee: CEN/SS F01 - Technical drawings
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 02-Nov-2022
• Completion Date: 02-Nov-2022
• Ref Project: SIST EN ISO 128-2:2023 - Technical product documentation (TPD) - General principles of representation - Part 2: Basic conventions for lines (ISO 128-2:2022)

Relations

• Replaces: EN ISO 128-2:2020 - Technical product documentation (TPD) - General principles of representation - Part 2: Basic conventions for lines (ISO 128-2:2020)
• Effective Date: 09-Nov-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2023
Nadomešča:
SIST EN ISO 128-2:2020
Tehnična dokumentacija izdelkov - Splošna načela prikazovanja - 2. del: Osnovni
dogovori za črte (ISO 128-2:2022)
Technical product documentation (TPD) - General principles of representation - Part 2:
Basic conventions for lines (ISO 128-2:2022)
Technische Produktdokumentation (TPD) - Allgemeine Grundlagen der Darstellung - Teil
2: Linien, Grundregeln (ISO 128-2:2022)
Documentation technique de produits (TPD) - Principes généraux de représentation -
Partie 2: Conventions de base pour les traits (ISO 128-2:2022)
Ta slovenski standard je istoveten z: EN ISO 128-2:2022
ICS:
01.110 Tehnična dokumentacija za Technical product
izdelke documentation
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 128-2
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2022
EUROPÄISCHE NORM
ICS 01.100.01 Supersedes EN ISO 128-2:2020
English Version
Technical product documentation (TPD) - General
principles of representation - Part 2: Basic conventions for
lines (ISO 128-2:2022)
Documentation technique de produits (TPD) - Technische Produktdokumentation (TPD) - Allgemeine
Principes généraux de représentation - Partie 2: Grundlagen der Darstellung - Teil 2: Linien,
Conventions de base pour les traits (ISO 128-2:2022) Grundregeln (ISO 128-2:2022)
This European Standard was approved by CEN on 23 September 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 128-2:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 128-2:2022) has been prepared by Technical Committee ISO/TC 10 "Technical
product documentation" in collaboration with Technical Committee CEN/SS F01 “Technical drawings”
the secretariat of which is held by CCMC.
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 May 2023, and conflicting national standards shall be
withdrawn at the latest by May 2023.
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 128-2:2020.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 128-2:2022 has been approved by CEN as EN ISO 128-2:2022 without any modification.

INTERNATIONAL ISO
STANDARD 128-2
Second edition
2022-10
Technical product documentation
(TPD) — General principles of
representation —
Part 2:
Basic conventions for lines
Documentation technique de produits (TPD) — Principes généraux de
représentation —
Partie 2: Conventions de base pour les traits
Reference number
ISO 128-2:2022(E)
ISO 128-2:2022(E)
© ISO 2022
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]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO 128-2:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 S c op e . 1
2 Nor m at i ve r ef er enc e s . 1
3 Terms and definitions . 2
4 T ypes of lines . 3
4.1 General . 3
4.2 B asic types . 3
4.3 L ine subtypes . . 4
4.4 V ariations of the basic types of lines . 4
4.5 C ombinations of lines with the same length . 4
4.5.1 Arrangement of two or more lines parallel to each other . 4
4.5.2 A rrangement of two different types of lines . 5
4.5.3 Arrangement of two continuous lines parallel to each other with regularly
recurring connecting elements between them . 5
4.5.4 A rrangement of regularly recurring geometric pictorial elements in
association with continuous lines . 5
5 Li ne di mens ions . 6
5 .1 L i ne w idt h . 6
5.2 D eviation in line width . 6
5.3 C onfiguration of lines . 6
6 D raughting of lines . 7
6 .1 Sp ac i n g . 7
6 . 2 Ju nc t ion s . 7
6.2.1 T ypes . 7
6 . 2 . 2 R epr e s ent at ion . 9
6.3 L ocation of a second line . 10
6.4 H ierarchy of overlapping lines. 10
7 C olou r s .11
8 D e sig n at ion .11
9 B asic conventions and applications for leader lines and reference lines .11
9.1 P resentation of leader lines . 11
9.2 R epresentation of reference lines . 14
9.3 I ndication of instructions .15
Annex A (informative) Preparation of lines by CAD systems .17
Annex B (normative) Lines in construction technical drawings .30
Annex C (informative) Examples of application in construction technical drawings .33
Annex D (normative) Types of lines and their application in mechanical engineering
technical drawings .39
Annex E (informative) Examples of application in mechanical engineering technical
drawings .43
Annex F (normative) Types of lines and their application on shipbuilding technical
drawings .55
Annex G (informative) Application examples of the different types of lines on shipbuilding
technical drawings .57
Bibliography .68
iii
ISO 128-2:2022(E)
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