ISO 274:1975

INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION *MEX~YMAPOAHAR OPI-AHM3AUMR no CTAHAAPTI/I3AUMW~ORGANISATlON INTERNATIONALE DE NORMALISATION
Copper tubes of circular section - Dimensions
Tubes en cuivre de section circulaire - Dimensions
First edition - 1975-l I-01
UDC 621.643.24 : 669-46
Ref. No. IS0 274-1975 (E)
Descriptors : tubes, metal tubes, metal tubing, non-ferrous products, copper, specifications, dimensions.
Price based on 3 pages
FOREWORD
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 Member Bodies). The work of developing
International Standards is carried out through IS0 Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up 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.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the IS0 Council.
International Standard IS0 274 was drawn up by Technical Committee ISO/TC 5,
Metal pipes and fittings, and circulated to the Member Bodies in April 1974.
It has been approved by the Member Bodies of the following countries :
Austria Germany Spain
Belgium Hungary Switzerland
Bulgaria India Thailand
Canada Israel Turkey
Chile Italy United Kingdom
Denmark Netherlands Yugoslovia
Finland Norway
France South Africa, Rep. of
The Member Bodies of the following countries expressed di sapproval of the
document on technical grounds :
Ireland
Japan
Sweden
U.S.A.
This International Standard cancels and replaces IS0 Recommendation
R 274-1962, of which it constitutes a technical revision.
0 International Organization for Standardization, 1975 l
Printed in Switzerland
IS0 274-1975 (E)
INTERNATIONAL STANDARD
Copper tubes of circular section - Dimensions
1 SCOPE AND FIELD OF APPLICATION
This International Standard establishes a range of dimensions applicable to all copper tubes of circular section whatever their
method of manufacture and their condition of delivery.
2 DEFINITIONS
2.1 outside diameter, D, of a tube : The arithmetic mean of any two mutually perpendicular outside diameters in the same
right section.
2.2 thickness, a, of a tube : The arithmetic mean of two thicknesses traversed by the same diameter.
3 DIMENSIONS
3.1 General purpose tubes
Outside diameter and thickness are given in table 1.
IS0 274-1975 (E)
TABLE 1
Dimensions in millimetres
I
Outside
Thickness, a
diameter
D
0,5 0,6 03 2,5
2 *
2,5
3 * *
4 * *
- + 0,08 .
5 *
6 -it
*
*
z!z 0,lO
*
-i
‘6 I
2 0,12
--i
+
32 I
I
42 1
+
* *
* +
4=
*
*
*
244,5 1
~
* *
267 I
...