SIST EN ISO 6412-2:1998

SLOVENSKI STANDARD
SIST EN ISO 6412-2:1998
01-maj-1998
7HKQLþQHULVEH3RHQRVWDYOMHQRSULND]RYDQMHFHYRYRGRYGHO,]RPHWULþQD
SURMHNFLMD
Technical drawings - Simplified representation of pipelines - Part 2: Isometric projection
(ISO 6412-2:1989)
Technische Zeichnungen - Vereinfachte Darstellung von Rohrleitungen - Teil 2:
Isometrische Darstellung (ISO 6412-2:1989)
Dessins techniques - Représentation simplifiée des tuyaux et lignes de tuyauteries -
Partie 2: Projection isométrique (ISO 6412-2:1989)
Ta slovenski standard je istoveten z: EN ISO 6412-2:1994
ICS:
01.100.01 7HKQLþQRULVDQMHQDVSORãQR Technical drawings in
general
23.040.01 Deli cevovodov in cevovodi Pipeline components and
na splošno pipelines in general
SIST EN ISO 6412-2:1998 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 6412-2:1998

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SIST EN ISO 6412-2:1998

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SIST EN ISO 6412-2:1998

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SIST EN ISO 6412-2:1998

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SIST EN ISO 6412-2:1998

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SIST EN ISO 6412-2:1998
INTERNATIONAL ISO
STANDARD 6412-2
First edition
1989-10-15
Technical drawings - Simplified representation
of pipelines -
Part 2 :
Isometric projection
Dessins techniques - Repr&en ta tion simplifi6e des tu yaux et hgnes du tu yau teries -
Partie 2 : Projection isometrique
Reference number
ISO 6412-2 : 1989 (E)

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SIST EN ISO 6412-2:1998
ISO 6412-2 :1989(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. Esch 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, govern-
mental 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the ISO Council. They are approved in accordance with ISO procedures requiring at
least 75 % approval by the member bodies voting.
International Standard ISO 6412-2 was prepared by Technical Committee ISO/TC 10,
Technical drawings.
ISO 6412 consists of the following Parts, under the general title Technical drawings -
Simplified represen ta tion of pipelines :
-
Part 7 : General rules and orthogonal represen ta tion
-
Part 2: lsometric projection
Annex A of this part of ISO 6412 is for information only.
0 ISO 1989
All rights reserved. No part of this publication may be reproduced or utilized in any form or by any
means, electronie or mechanical, including photocopying and microfilm, without Permission in
writing from the publisher.
International Organization for Standardization
Case postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed in Switzerland
ii

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SIST EN ISO 6412-2:1998
ISO 6412-2 : 1989 (EI
Introduction
For drawings for tender, manufacturing drawings and erection drawings in Pipeline
construction as well as in machine construction and the construction industry,
isometric projection has been introduced to a great extent, since the drawing work tan
be tut down and the presentation made clearer.
For the purposes of this part of ISO 6412, all dimensions and tolerantes on the
drawings have been stencilled in upright lettering. It should be understood that these
indications could just as well be written in free-hand or inclined (italic) lettering without
altering the meaning of the indications.
For the presentation of lettering (proportions and dimensions), see ISO 6412-1.
. . .
Ill

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SIST EN ISO 6412-2:1998
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SIST EN ISO 6412-2:1998
ISO 6412-2: 1989 (E)
INTERNATIONAL STANDARD
Simplified representation
Technical drawings -
of pipelines -
Part 2 :
Isometric projection
1 Scope 3 Definitions
For the purposes of this part of ISO 6412, the definitions given
This part of ISO 6412 specifies supplementary rules, in addition
in ISO 6412-1 apply.
to the general rules given in ISO 6412-1, applicable to isometric
representation. Isometric representation shall be used where
the essential features are to be shown clearly in three dimen-
4 Coordinates
sions.
As far as it is necessary to use Cartesian coordinates, for
instance for calculations or numerical control of machine tools,
the coordinate axes shall comply with figure 1.
2 Normative references
In all cases, the coordinates of individual pipes or pipe
assemblies should comply with those adopted for the complete
The following Standards contain provisions which, through
installation and shall be indicated on the drawing or in an
reference in this text, constitute provisions of this part of
associated document.
ISO 6412. At the time of publication, the editions indicated
were valid. All Standards are subject to revision, and Parties to
agreements based on this part of ISO 6412 are encouraged to 2
investigate the possibility of applying the most recent editions
of the Standards listed below. Members of IEC and ISO main-
tain registers of currently valid International Standards.
ISO 128 : 1982, Technical drawings - General principles of
presen ta tion.
ISO 129 : 1985, Technical drawings - Dimensioning - General
principles, definitions, me thods o f execu tion and special indica-
tions.
ISO 5261 : 1981, Technical drawings for structural metal work.
Figure 1
ISO 6412-1 : 1989, Technical drawings - Simplified represen-
5 Line conventions
tation of pipelines - Part 7: General rules and orthogonal
represen ta tion. See ISO 6412-1.
1

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SIST EN ISO 6412-2:1998
ISO 6412-2 : 1989 (El
6.2 Pipes in a vertical plane
6 Deviations from the direction of coordinate
axes
Pipes, or Parts of pipes, situated in a vertical plane, shall be
indicated by showing their projections on a horizontal plane
6.1 General
[see figure 3a)l.
Pipes, or Parts of pipes, running parallel to the coordinate axes,
shall be drawn parallel to the relevant axis without any further
6.3 Pipes in a horizontal plane
indication.
Deviations from the directions of the coordinate axes should be
Pipes, or Parts of pipes, situated in a horizontal plane, shall be
indicated by means of auxiliary hatched projection planes as
indicated by showing their projections on a vertical plane [see
shown in figure 2.
figure 3b)l.
6.4 Pipes not parallel to any coordinate plane
Pipes, or Parts of pipes, not running parallel to any coordinate
plane, shall be indicated by showing both their projections on a
horizontal and on a vertical plane [see figure 3c)].
6.5 Auxiliary projection planes
lt is recommended that the right angles of the triangles limiting
the auxiliary projection planes be indicated.
Auxiliary projection planes may be emphasized by hatchings,
parallel to the X- or Y-axis for horizontal auxiliary planes, and
vertical for all other aux
...