Thanks!!. However In my opinion mean diameter of hemispherical head shoud match with mean dia of skirt support if there is a sufficient clear gap between butt weld joint of shell to head and skirt support to head.Correct me if I am wrong.
Your reply that "there is no standard applicable" is valid also for selection of forged Y-ring?? OR Y-ring should be selected in certain cases like creep temp. range etc.
And if one decide to go for Y-ring then how to decide the dimensions of this Y-ring??
Is there any standard of any PMC available?? OR is there any standard procedure to dimention Y-ring??
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain - possibly to become "South Scotland" or "Non-Caledonia" from September 2016. Kettle's on.