A question about forgings

[FILGUEIRAS]

I need to use a forged nozzle, SA-350 LF2.
Due to time of delivery, I´ll purchase a forged piece, round to the external diameter of the nozzle, and drill a bore through it.
The vessel owner refused to accept this, stating that a self reinforced nozzle shall be forged like a flange, that is, to obtain peripherical fibers.

My question is, does this make sense?

SA-350 par. 5.3.3 reads: “ 5.3.3 Except for flanges of all types, hollow, cylindrically- shaped parts may be machined from rolled bar or seamless tubular materials provided that the axial length of the part is approximately parallel to the metal flow lines of the stock.”.
The vessel is designed per Sec 1, MDMT= -40, no fatigue.

 

[metengr]

FILGUEIRAS;
If you are using a forged round, not rolled bar, to fabricate a nozzle with reinforcement, I see no problem with what you are proposing.

 

[stanweld]

FILGUERAS,
What you are describing is standard fabrication of similar, forged, self reinforcing nozzles. A forged weld neck flange might then be welded to the nozzle.

 

[FILGUEIRAS]

Thank you, fellows.

My opinion is really reinforced now

 

[zakk]

I don't have Sec I, however Section VIII states in UG-14(b)...

"Except for flanges of all types, hollow cylindrically shaped parts (up to and including NPS4 (DN100)) may be machined from rolled or forged bar, provided that the axial length of the part is approximately parallel to the metal flow lines of the stock."

As long as your 4.50" or below, you'd be OK under Section VIII.

Maybe Section 1 has something similar???