BS ISO BRITISH STANDARD 15649:2001 Petroleum and natural gas industries Piping ICS 75.180.99 BS NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS ISO 15649:2001 National foreword This British Standard reproduces verbatim IS0 15649:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee PSE/17, Materials and Equipment for Petroleum and Natural Gas Industries which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Version correct as of 14 Jan 2023. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled "International Standards Correspondence Index", or by using the “Find" facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. I copy: University of Oxford. Compliance with a British Standard does not ofitself confer immunity from legal obligations. This British Standard, having beenpreparedunderthe Summary of pages .direction of the Engineering Sector Policy and Strategy This document comprises a front cover, an inside front cover, the ISO title page, Committee, was published pages ii to v, a blank page, pages 1 to 15 and a back cover. under the authority of the Standards Policy and Strategy The BSI copyright date displayed in this document indicates when the Committee on document waslast issued. 21 December 2001 Amendments issued since publication Amd. No. Date Comments C BSI 21 December 2001 ISBN 0 580 38782 8 ISO INTERNATIONAL STANDARD 15649 First edition 2001-06-15 Version correct as of 14 Jan 2023 Petroleum and natural gas industries - Piping Industries du pétrole et du gaz naturel- Tuyauterie Licensed copy: University of Oxford. Reference number ISO 15649:2001(E) ISO