Hi everyone,
I can't seem to find any reference to A312 TP 304 or A312 TP316 under the ASME B31.8 and wonder if it's allowed to be used. Table 841.1.7-1 (2018 version) doesn't seem to mention it. Mandatory appendix D (B31.8 2018) doesn't seem to list them either, thought it does give a...