Surface condition for flanges
Surface condition for flanges
(OP)
I need to resurface the face of a custom made 14" 1500lb. flange. The flange is flat face; with additional thickness add to account for warping after welding. The flange face surface was not welded only the external and internal fillet weld to the pipe " Slip-on" The customer is un sure of a stander surface condition after machining and has recommended use an ASME code for a guideline. I have reviewed B16.5 but I don't see anything for Ra. Would this be under B46.1? If so dose anyone know the stander finish of a flat face 14" 1500lb. flange. B46.1 is one code I don't have. Or, maybe I missed it in B16.5???





RE: Surface condition for flanges
normally it is 125-250 but could be as low as 63 or high as 500.
original drawings would tell you the machining details
RE: Surface condition for flanges
Cheers,
gr2vessels
RE: Surface condition for flanges
If it is 1500lb then I am surprised that it is a Slip On flange and not weld neck for such a high pressure rating.
Also a flat face gasket does not sound right.
I would expect a RF or a RTJ
RE: Surface condition for flanges