My service is Hydrogen, Wet & Sour. The client's pipe specifications call for B564 (Forged) N08825 Valves, I have sizes up to 10" and 1500# class. Vendors tell me that they cannot supply to B564, they quote A494 (Cast) instead.
ASME B16.34 does not give a pressure rating for A494 N08825...
I am welding a 2" 300# Studding outlet (Normalized) on an existing vessel. The vessel shell material is SA 516-70 Normalized, 1.25" thick, but not PWHT as it is not in severe service. The Studding outlet wall is 2.25" thick and it is "Set on" with a 7/8" fillet weld on the inside and 1/2"...
A client has a filter vessel of Inconel 601 in HDPE manufacture operating at 5 psig & from 700 F to 1100 F. The filters are tubes screwed into a tubesheet and are separated into 4 groups by 5/16" thick internal baffles, the baffle is not stressed. The baffles are also Inconel 601 and are welded...
