ISO INTERNATIONAL STANDARD 9330-1 First edition 1990-02-15 Corrected and reprinted 1990-11-01 Welded steel tubes for pressure purposes Technical delivery conditions Part 1: Unalloyed steel tubes'with specified room temperature properties Tubes soudés en acier pour service sous pression -- Conditions techniques de livraison Partie 1: Tubes soudes en aciers non allies avec caracteristiques spécifiees a temperatureambiante Reference number ISO9330-1:1990 (E) No reproduction or networking permitted without license from IHS Not for Resale ISO9330-1:1990 (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 ina subjectforwhichatechnical committeehasbeen establishedhas 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 Internationat Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adoptedbythetechnical 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 9330-1 was prepared by Technicai Committee ISO/TC 17, Steel. It constitutes a partial revision of Iso 2604-3 : 1975 and Iso 2604-6 : 1978. Iso 9330 consists .of the following parts, under the general title Welded steel tubes for pressure purposes - Technical delivery conditions: Part1:Unalloyedsteeltubeswithspecifiedroomtemperatureproperties Part 2: Electric resistance and induction welded unalloyed and alloyed steel tubes with specified elevated temperature properties Part3:Electricresistanceandinductionweldedunalloyedandalloyedsteel tubeswithspecifiedlowtemperatureproperties Part 4: Submerged arc-welded unalloyed and alloyed steel tubes with specified elevated temperature properties Part 5: Submerged arc-welded unalloyed and alloyed steel tubes with specified lowtemperatureproperties Annex A of this part of ISo 9330 is for information only. ?ISO1990 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm,without permission in writing from the publisher. InternationalOrganizationforStandardization Case postale 56 . CH-1211 Geneve 20 . Switzerland Printed in Switzerland ii Copyright Int Standardizatior No reproduction or networking permitted without license from IHS Not for Resale INTERNATIONAL STANDARD ISO 9330-1 : 1990 (E) Welded steel tubes for pressure purposes -- Technical delivery conditions - Part 1: Unalloyed steel tubes with specified room temperature properties Scope is0 4200 :1985, Plain end steel tubes, welded and seamless General tables of dimensions and masses per unit length. 1.1 This part of iSo 9330 specifies the technical delivery con ditions for welded tubes of circular cross-section, made of iso 4948-1 : 1982, Steels -- Classification - Part 1: Classifica- unalloyed quality steel with specified room temperature proper- tion of steels into unalloyed and alloy steels based on chemical ties. These tubes are intended for pressure purposes including composition. the transport of fluids under pressure. Iso 5252 : 1977, Steel tubes - Tolerance systems. Certain application standards and regulations permit the use of these tubes up to 350 ° (see annex A). Iso 6761 : 1981, Steel tubes -- Preparation of ends of tubes and fittings for welding. ISo 6892 : 1981, Metallic materials - Tensile testing 1.2 See Iso 404 for general technical delivery requirements. ISo 7438 : 1985, Metallic materials - Bend test. IS0 8492 : 198