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IS0
I N T ERN AT1 ON A L O RG A N I Z AT 1 O N FO R STA N DARD I Z AT1 O N
IS0 RYOMMENDATION
RING EXPANDING TEST ON STEEL TUBES
1st EDITION
August 1964
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The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized therefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 374, Ring Expanding Test on Steel Tubes, was drawn up by
Technical Committee ISO/TC 17, Steel, the Secretariat of which is held by the British Standards
Institution (BSI).
Work on this question by the Technical Committee began in 1957 and led, in 1962, to the
adoption of a Draft IS0 Recommendation.
In November 1962, this Draft IS0 Recommendation (No. 518) was circulated to all the IS0
It was approved by the following Member Bodies:
Member Bodies for enquiry.
Australia Germany Romania
Austria Hungary Spain
Belgium India Sweden
Ireland Switzerland
Brazil
Burma Italy Turkey
Canada Japan United Kingdom
Chile Netherlands U.S.A.
Chechoslovakia New Zealand Yugoslavia
Denmark Norway
Finland Poland
Two Member Bodies opposed the approval of the Draft :
U.S.S.R.
France
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council,
which decided, in August 1964, to accept it as an IS0 RECOMMENDATION.
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ISO/R 374 - 1984 (E)
IS0 Recommendation R 374 August 1964
RING EXPANDING TEST ON STEEL TUBES
1. SCOPE
This IS0 Recommendation applies to steel tubes of circular cross-section having
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