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I'm checking what is the current version of B31.1 referenced in Section 1-2015. Table A-360 lists it as 2012. Is that correct? Has the table been updated. Can I use the active year of B31.1 rather than the referenced? Thanks.

Hi, This might be better posted in materials but... We use B247, 6061-T6 aluminum for pipe fittings for cryogenic systems. Currently we are looking at some round bar that is certified B247 chemistry only, being manufactured to AMS-QQ-A-367A. Chapter III of ASME B31.3 allows the use of...

prex, Thanks for the help. I'll make sure my transitions are longer than 2T.

Lacking experience, I make no assumptions. B16.25 shows a 2T transition. To me, this means 2T max length. B31.1, figure 127.4.2, page 72, shows a minimum 2T (labeled minimum)transition zone, meaning it can be longer. In my mind these contradict each other. If a longer transition is better than...

This is a piping component going into a process piping system. B31.3 doesn't exclude rolling plate into cylindrical shapes and welding with longitudinal joints. Various grades of bar and plate are listed in Table A-1 for use in piping systems. These can be welded to each other and to other...

Per customer specification. It's going into their piping system.

Please excuse! The code of construction is B31.3. My confusion is that B16.25, referenced in B31.3, 328.4.2 (5), shows a (max?) 2T transition zone, while B31.1 and B&PV code show much more.

I'm designing a vessel to meet B31.3-2004 requirements. I have a piece of rolled plate welded to a piece of round bar; both 304 SS. The plate is .3125 thick and the wall of the round bar after boring will be about 1.74" thick. B31.1 references B16.25 (Fig. 1 page 2) for butt weld transitions...