22" Class 600 Flange Stud Lengths
22" Class 600 Flange Stud Lengths
(OP)
In trying to calculate stud bolt lengths for an odd size 22" Class 600 B16.5 RF flange joint, I've run into an issue. These lengths are not published in B16.5 or by vendors that I've seen. B16.5 points you to use Nonmandatory App. C for stud bolt lengths in unpublished sizes. However, to follow the calc in this appendix one needs to know the minimum flange thickness & stud bolt diameter of the odd size. Since these values are not published either, how would one run this stud length calc?
Thanks
Thanks





RE: 22" Class 600 Flange Stud Lengths
I hope this could help, I found a website of a manufacturer of flanges specifically showing thickness for a 22" weld neck flange. see link below.
http://catalog.coastalflange.com/viewitems/ansi-b1...
Regards,
Jay
RE: 22" Class 600 Flange Stud Lengths
For bolt holes, 20 has 16 x 3 1/8 holes, 24" has 16 at 3 5/8". Bolts are 1/8" smaller diameter than the holes, so 22" would be 3 3/8" holes with 3 1/4" bolts.
Bolt circle diameter is then half way between 831 and 990, thickness 124mm etc, but if you take 130 you won't be too short.
Remember - More details = better answers
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RE: 22" Class 600 Flange Stud Lengths
Forget stud length, how are determining the pressure-temperature rating?
RE: 22" Class 600 Flange Stud Lengths
RE: 22" Class 600 Flange Stud Lengths
So again, I ask, how will you determine the pressure-temperature rating of a flange that has no provided dimensions?
The title of B16.5 is accurate. It contains sizes NPS 1/2, a vast selection of intermediate sizes, and NPS 24.
RE: 22" Class 600 Flange Stud Lengths
RE: 22" Class 600 Flange Stud Lengths
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.