ISO INTERNATIONAL STANDARD 11623 Third edition 2023-07 Gas cylinders Composite cylinders and tubes Periodic inspection and testing Bouteilles d gaz - Bouteilles et tubes composites - Controles et essaispériodiques Referencenumber IS011623:2023(E) ISO @ ISO 2023 IS011623:2023(E) COPYRIGHTPROTECTEDDOCUMENT IS02023 All rights reserved.Unless otherwise specified, orrequired in the context of its implementation,no part of this publication may bereproduced or utilized otherwise in anyform orbyanymeans,electronicormechanical, including photocopying,orposting on the internet oran intranet, without prior written permission.Permission can be requested from either IsO at the address below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401:Ch.de Blandonnet8 CH-1214 Vernier, Geneva Phone:+41227490111 Email:copyright@iso.org Website:www.iso.org Published in Switzerland i @IS02023-All rightsreserved