To further re-open the B16.25 discussion,
According to B31.3 328.4.2(a)(2)
"End preparation for groove welds specified in ASME B16.25, or any other which meets the WPS, is acceptable. [For convenience, the basic bevel angles of ASME B16.25 and some additional J bevel angles are shown in Fig 328.4.2 sketches (a) and (b).]
Unfortunately this is from the 02' Issue, the one I currently possess. Has this paragraph been revised?
I know other threads have maintained that B16.25 is, with acceptions, required for piping codes, but I am unable to find wherein the requirement is generated. And B31.3 seems to be explicit with language such as "any other", "convenience", and "additional".