Ring Flange with plate material ?
Ring Flange with plate material ?
(OP)
Dear All,
I'm designing a 20in Dia. flanged manhole as per Appendix 2 ( ring type loose Flange + flanged Dished cover) see attached (2) sketches , and I have some confusion about material flange specification , so my question is very simple:
as theses flanged are not hubbed flanges, nor reverse flange, so Can I use a plate materail (SA-240-304 for example) for theses ring flanges?
is it mandatory to use Forging material?
Thanks.
Laurent.
I'm designing a 20in Dia. flanged manhole as per Appendix 2 ( ring type loose Flange + flanged Dished cover) see attached (2) sketches , and I have some confusion about material flange specification , so my question is very simple:
as theses flanged are not hubbed flanges, nor reverse flange, so Can I use a plate materail (SA-240-304 for example) for theses ring flanges?
is it mandatory to use Forging material?
Thanks.
Laurent.





RE: Ring Flange with plate material ?
please find the attached second sketch for the flange.
Thanks.
Laurent
RE: Ring Flange with plate material ?
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Ring Flange with plate material ?
Regards
r6155
RE: Ring Flange with plate material ?
RE: Ring Flange with plate material ?
that is exactly what I'm worry about it, we need more help to make this point more clear,
because if I can use plate for this flange, that's means that all Slip on flange ( just without hub)can be made from plate material.
that what we need to confirm.
Thanks.
Laurent.
RE: Ring Flange with plate material ?
If you want to make a flange out of something other than a near net shape forging, but it does not meet the criterion above, then you need to do soundness testing (UT before machining, plus tensile tests along both primary axes), whether you use plate or a forged bar which has not been pierced.
As always, I'm too lazy to go back, find and quote you chapter and verse from the code on this, so take with an appropriate measure of salt- and I defer to those who use ASME VIII on a daily basis and have it tattooed to the back of their eyelids.
RE: Ring Flange with plate material ?
For slip-ons, blinds and so forth, rings or rounds burned from plate are widely used. It is a good idea to examine for laminations, but really, even this is not done that often for these types. However see UG-93(d)(3).
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: Ring Flange with plate material ?