ISO INTERNATIONAL STANDARD 11960 Sixth edition 2020-03 Petroleum and natural gas industries Steel pipes for use as casing or tubing for wells Industries du pétrole et du gaz naturel - Tubes d'acier utilisés comme cuvelage ou tubes de production dans les puits Reference number IS0 11960:2020(E) ISO @IS02020 IS0 11960:2020(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 beloworIso's memberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +4122 7490947 Email: [email protected] Website: www.iso.org Published in Switzerland i @ IS0 2020 - All rights reserved IS0 11960:2020(E) Contents Page Foreword .X Introduction. ..xi 1 Scope. ..1 2 Normative references .1 3 Terms, definitions, symbols and abbreviated terms 3.1 Terms and definitions .3 3.2 Symbols and abbreviated terms .7 4 Conformance. ..8 4.1 Dual referencing of normative references. ..8 4.2 Units of measurement ..9 5 Information to be supplied by the purchaser .9 5.1 Grades C90, T95 and C110 .9 5.2 Casing. ..9 5.3 Tubing .11 5.4 Coupling stock, coupling material and accessory material .13 6 Process of manufacture .14 6.1 General .14 6.2 Heat treatment. .14 6.2.1 General 14 6.2.2 Grades J55, K55, N80 all types and R95. .15 6.2.3 Grades L80 all types, C90, T95 and C110 .15 6.3 Straightening .15 6.3.1 Grades H40, J55, K55, N80 all types 15 6.3.2 Grades R95 and P110 .15 6.3.3 Grade L80 .15 6.3.4 Grades C90, T95 and C110 .16 6.3.5 Grade Q125 .16 6.4 Traceability .16 6.4.1 General .16 6.4.2 Serialization of Grades C90, T95, C110 and Q125 ..16 6.5 Processes requiring validation. .16 7 Material requirements. .17 7.1 Chemical composition .17 7.2 Tensile properties. ..17 7.2.1 General. .17 7.2.2 Elongation. 17 7.2.3 Yield strength .17 7.2.4 Statistical tensile testing - Grades C90, T95 and C110 .18 7.3 Charpy V-notch test - General requirements. .18 7.3.1 Evaluation of test results .18 7.3.2 Critical thickness .18 7.3.3 Specimensizeandorientation. 18 7.3.4 Hierarchy of test specimens. .18 7.3.5 Alternative size impact test specimens .19 7.3.6 Sub-size test specimens. .19 7.3.7 Test temperature. .19 7.3.8 Statistical impact testing .19 7.3.9 Reference information. ..19 7.4 Charpy V-notch - Absorbed energy requirements for coupling stock, coupling material, coupling blanks and couplings .19 7.4.1 General .19 7.4.2 Grade H40 .19 @ IS0 2020 - All rights reserved iii IS0 11960:2020(E) 7.4.3 Grades J55 and K55 for API threads 19 7.4.4 Grades N80 all Types, R95, L80 all Types, C90, T95, P110 and Q125 for APIthreads 20 7.4.5 Special end-finish 20 7.5 Charpy V-notch - Absorbed energy requirements for pipe. 20 7.5.1 Grades H40, J55 and K55 20 7.5.2 Grades N80 all Types, R95, L80, C90, T95 and P110 20 7.5.3 Grades C110 and Q125. .21 7.5.4 Test specimen 21 7.5.5 Testing conditions. 22 7.6 Charpy V-notch - 1 Absorbed energy requirements for accessory material .22 7.6.1 Accessory material General.. 22 7.6.2 Accessory material for accessories with internal API threads except integral tubing connections.. 22 7.6.3 Accessory material for accessories with internal special end-finish tapered interference-type threads. 22 7.6.4 Accessory material for accessories with external threads. 22 7.6.5 Accessory material for accessories with either integral tubing connections or internal special end-finish connections that do not have thread interference 22 7.6.6 Critical thickness for accessory material and special end-finish material 22 7.7 Maximum hardness.. 23 7.7.1 Grades L80 all types, C90, T95 and C110 23 7.7.2 Grade Q125 - All products 23 7.8 Hardness var