Large diameter "INDUSTRY STANDARD" weld neck flange
Large diameter "INDUSTRY STANDARD" weld neck flange
(OP)
Does anyone have TEMP/PRESSURE ratings or documentation on "Industry Standard" flanges? Evidently this "INDUSTRY STANDARD" is the norm when not specified to MSS SP 44 / B16.47....





RE: Large diameter "INDUSTRY STANDARD" weld neck flange
What service? What conditions?
What is it being connected to? What is the flange type and pressure rating and material and size and spec of the flange will it be assumed to be bolted up to?
RE: Large diameter "INDUSTRY STANDARD" weld neck flange
You can give Pacific Flange a call or look at the table on the Lynco link
http://www.pacificflange.com/index.html
http:
RE: Large diameter "INDUSTRY STANDARD" weld neck flange
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: Large diameter "INDUSTRY STANDARD" weld neck flange
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Cockroach - it's not difficult and I've been down that road. Show me where there is a true written specification? The "industry standard" A105 flange has been made for 50+ years but no one has written a true specification on it / not that I can find. They are Class 125/150# flanges...
RE: Large diameter "INDUSTRY STANDARD" weld neck flange
Can you give dimensions? Nom size, bolt circle, # & size bolts or holes, etc, maybe I can identify it.
Regards,
Mike
RE: Large diameter "INDUSTRY STANDARD" weld neck flange
Yes, there are several dimensional standards for flanges over 24" NPS.
Flanges smaller than 24" are almost always covered by ASME B16.5
But this choice of standards above 24" should be covered by the Pipe Spec for the system in question.
Are you working on an older/existing piping system where the owner (and his gang of MBAs)have discarded all documentation ?