EN ISO 6412-2:2018

SLOVENSKI STANDARD
01-april-2018
1DGRPHãþD
SIST EN ISO 6412-2:1998
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GHO,]RPHWULþQDSURMHNFLMD,62
Technical product documentation - Simplified representation of pipelines - Part 2:
Isometric projection (ISO 6412-2:2017)
Documentation technique de produits - Représentation simplifiée des tuyaux et lignes de
tuyauteries - Partie 2: Projection isométrique (ISO 6412-2:2017)
Ta slovenski standard je istoveten z: EN ISO 6412-2:2018
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
01.110 7HKQLþQDGRNXPHQWDFLMD]D Technical product
L]GHONH documentation
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 6412-2
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 01.100.99; 23.040.01 Supersedes EN ISO 6412-2:1994
English Version
Technical product documentation - Simplified
representation of pipelines - Part 2: Isometric projection
(ISO 6412-2:2017)
Documentation technique de produits - Représentation
simplifiée des tuyaux et lignes de tuyauteries - Partie 2:
Projection isométrique (ISO 6412-2:2017)
This European Standard was approved by CEN on 22 October 2017.

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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6412-2:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 6412-2:2018) has been prepared by Technical Committee ISO/TC 10 “Process
plant documentation”.
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 August 2018, and conflicting national standards shall
be withdrawn at the latest by August 2018.
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 6412-2:1994.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 6412-2:2017 has been approved by CEN as EN ISO 6412-2:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 6412-2
Second edition
2017-12
Technical product documentation —
Simplified representation of
pipelines —
Part 2:
Isometric projection
Documentation technique de produits — Représentation simplifiée
des tuyaux et lignes de tuyauteries —
Partie 2: Projection isométrique
Reference number
ISO 6412-2:2017(E)
©
ISO 2017
ISO 6412-2:2017(E)
© ISO 2017, Published in Switzerland
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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 6412-2:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Coordinates . 1
5 Line conventions . 2
6 Deviations from the direction of coordinate axes . 2
6.1 General . 2
6.2 Pipes in a vertical plane . 2
6.3 Pipes in a horizontal plane . 2
6.4 Pipes not parallel to any coordinate plane. 3
6.5 Auxiliary projection planes . 3
7 Dimensioning and special rules . 4
7.1 General . 4
7.2 Diameters and wall thickness . 4
7.3 Longitudinal and angular dimensions . 4
7.4 Pipes with bends . 4
7.5 Radii and angles of bends . 4
7.6 Levels . 5
7.7 Direction of slope . 5
7.8 Positions of ends of pipes . 6
7.9 Redundant dimensioning . 6
7.10 Dimensioning for pipe-bending machines . 6
8 Graphical symbols . 6
8.1 General . 6
8.2 Examples of graphical symbols drawn with the isometric projection method . 7
8.2.1 Valves . 7
8.2.2 Transition pieces (cones) . 7
8.2.3 Supports and hangers. 8
8.2.4 Crossings . 8
8.2.5 Permanent junctions . 8
8.2.6 General connections. 8
8.2.7 Flanges . 9
9 Examples . 9
Bibliography .12
ISO 6412-2:2017(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 on the voluntary
...