ASME B16.25-2007 Buttwelding Ends

An American National Standard. The American Society of Mechanical Engineers (ASME). Revision of ASME B16.25-2003. Date of Issuance: March 7, 2008. 30p. This Standard covers the preparation of buttwelding ends of piping components to be joined into a piping system by welding. It includes requirements forwelding bevels, for external and internal shaping of heavy-wall components, and for preparation of internal ends (including dimensions and tolerances