BS_EN_755-7-2008_铝和铝合金.挤压的杆材棒材管材和型材.无缝管的尺寸和形状公差.pdf

BRITISH STANDARD BS EN 755-7:2008 Aluminium and aluminium alloys — Extruded rod/bar, tube and profiles — Part 7: Seamless tubes, tolerances on dimensions and form ICS 77.150.10 BS EN 755-7:2008 National foreword This British Standard is the UK implementation of EN 755-7:2008. It supersedes BS EN 755-7:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee NFE/35, Light metals and their alloys. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was Amendments/corrigenda issued since publication published under the authority of the Standards Policy and Date Comments Strategy Committee on 30 April 2008 © BSI 2008 ISBN 978 0 580 55562 6 EUROPEAN STANDARD EN 755-7 NORME EUROPÉENNE EUROPÄISCHE NORM March 2008 ICS 77.150.10 Supersedes EN 755-7:1998 English Version Aluminium and aluminium