ASME B16.39-09可锻铸铁螺纹管接(150、250和300级).pdf

ASME B16.39-2009 [Revision of ASME B16.39-1998 (R2006)] Malleable Iron Threaded Pipe Unions Classes 150, 250, and 300 A N A M E R I C A N N A T I O N A L S T A N D A R D Date of Issuance: October 9, 2009 The next edition of this Standard is scheduled for publication in 2014. There will be no addenda issued to this edition. ASME issues written replies to inquiries concerning interpretations of technical aspects of this Standard. Interpretations are published on the ASME Web site under the Committee Pages at as they are issued. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American National Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in connection with any ite