ISO INTERNATIONAL STANDARD 9809-1 Third edition 2019-08 Gas cylinders Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 1: Quenched and tempered steel cylinders and tubes with tensile strength less than 1 100 MPa Bouteilles a gaz - Conception, construction et essais des bouteilles a gaz et des tubes rechargeables en acier sans soudure - Partie 1: Bouteilles et tubes en acier trempé et revenu ayant une résistance a la traction inférieure a 1 100 MPa Reference number IS0 9809-1:2019(E) osi @ IS0 2019 IS0 9809-1:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2019 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 below or Iso's member body in the country of the requester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2019 - All rights reserved