bs-en-558-2008-valves-face-to-face-size-standard

BRITISH STANDARDBS EN558:2008Industrial valvesFace-to-face andcentre-to-facedimensions of metalvalves for use in flangedpipe systemsPN and Classdesignated valves豆灯www.docin.comI032a.060.01$引NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBritish Standards