ISO INTERNATIONAL STANDARD 9967 Third edition 2016-01-15 Thermoplastics pipes - Determination of creep ratio Tubes en matieres thermoplastiques - Détermination du taux de fluage Reference number ISO 9967:2016(E) ISO International Organization for Standardization e=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02016 vided by IHS under Not for Resale, 2016/3/29 03:00:20 No reproduction or networking permitted without license from IHS IS0 9967:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, 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 Licensee-ZHEJIANG INST OF STANDARDIZAISQ 0d6 - All rights reserved HS und Not for Resale, 2016/3/29 03:00:20 networking permited without license from IHS IS0 9967:2016(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ...1 2 Normative references 3 Symbols 4 Principle. ..2 5 Apparatus. ..2 6 Test pieces. ..3 6.1 Marking and number of test pieces ..3 6.2 Length of test pieces. .3 6.3 Inside diameter of test piece(s) .4 6.4 Age of test pieces.. 7 Conditioning. ..5 8 Test procedure. 9 Determination of the creep ratio. ..6 10 Test report ..9 Annex A (informative) Creep in thermoplastics material ..10 Bibliography ..12 iii icensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 d without license from IHS