Slagathor
Mechanical
- Jan 6, 2002
- 129
Modern Flange Design Bulletin 502 covers flange design for Integral (Weld neck and full pen welds), Loose (Lap Joint and SlipOn), and Optional (Butt weld to ring, etc). 502 does not address socket weld type flanges. What about the Code? I do not have access right now...I guess I need to get a copy. It has been about 8-10 years since I worked with the Code.
Also, B16.5 only shows socked weld designs through 3.0". I have a flange connection within some fluid handling equipment that needs to be compact style socked weld style...sizes up to 16".
I could just analyze it as a hubless ring flange...but my gut tells me that the lesser engagement of the pipe within the flange relative to a slip on flange will result in more load on pipe where it enters the socket.
Of course I could always to a quick FEA of a 3" B16.5 hubless slip on vs. a 3" B16.5 socket weld with the same pipe diameter...and that would tell me if my gut is right.
Any guidance? (Please note, Code compliance is NOT required...I think it is just good design practice to use it for determining design stess limits, safety factors, etc....)
Also, B16.5 only shows socked weld designs through 3.0". I have a flange connection within some fluid handling equipment that needs to be compact style socked weld style...sizes up to 16".
I could just analyze it as a hubless ring flange...but my gut tells me that the lesser engagement of the pipe within the flange relative to a slip on flange will result in more load on pipe where it enters the socket.
Of course I could always to a quick FEA of a 3" B16.5 hubless slip on vs. a 3" B16.5 socket weld with the same pipe diameter...and that would tell me if my gut is right.
Any guidance? (Please note, Code compliance is NOT required...I think it is just good design practice to use it for determining design stess limits, safety factors, etc....)
