slip on flanges
slip on flanges
(OP)
Dear Sirs,
What type of welds on slip - on flanges, socket weld or fillet weld?
What is the difference?
Need your advise.
Thank you
What type of welds on slip - on flanges, socket weld or fillet weld?
What is the difference?
Need your advise.
Thank you





RE: slip on flanges
Images for Socket Welds:
https://www.google.com/search?q=socket+weld&bi...
Images for Fillet Welds:
https://www.google.com/#q=Images+for+Fillet+welds
Sometimes its possible to do all the right things and still get bad results
RE: slip on flanges
http://www.eng-tips.com/viewthread.cfm?qid=295603
Sometimes its possible to do all the right things and still get bad results
RE: slip on flanges
RE: slip on flanges
If you are using ASME, be sure to check whether the weld size specified by the code is the weld throat dimension or the weld leg dimension. Most of the ASME pressure piping codes specify the minimum throat dimension of the fillet weld joint the pipe to the hub of the fitting. One must multiply the throat dimension by 1.414 to get the equivalent fillet leg dimension. It is the leg dimension the welder wants to know and it is the leg dimension that is specified by the welding symbol if one is using AWS A2.4 standard symbols for welding, brazing, and NDE.
NAVSEA uses MIL-STD-22D as their standard weld joint details. It includes details for slip-on flanges, socket joints, etc. While conservative, they work and have performed well for, well let's say a heck of a long time. The fillet welds used in piping per NAVSEA employ an unequal leg dimension. The longer fillet leg is positioned against the pipe while the shorter leg equal to the thickness of the pipe wall is placed against the hub of the fitting. One of my friends did a study on the unequal leg fillet weld and their performance compared to an equal leg fillet weld. The results of the study was that where fatigue is concerned, the unequal fillet weld out performed the equal leg fillet by a wide margin.
Best regards - Al