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Moonby86
Associate

Join Date: Mar 2011
Posts: 36

Tolerance for ASME Flange Machining

05/20/2011 12:11 AM

Does anyone know where applicable tolerance regarding ASME code flange machining comes from?

Please advise me.
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Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#1

Re: Tolerance for ASME Flange machining

05/20/2011 1:03 AM

It was Commandment 273, handed down by Almighty God. Just read the specs....

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lyn
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Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#2
In reply to #1

Re: Tolerance for ASME Flange machining

05/20/2011 1:36 AM

What happened to 11 thru 274?
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jesw55
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Join Date: Aug 2010
Location: Wales, UK
Posts: 391
Good Answers: 18
#3
In reply to #2

Re: Tolerance for ASME Flange machining

05/20/2011 3:14 AM

Hi Lyn,

I think we should say "AMEN" to this thread now before we get suggestions for all of the 263 missing standards.

Best regards,

John

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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
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#4
In reply to #2

Re: Tolerance for ASME Flange machining

05/20/2011 3:47 AM

I don't know about many, but #86 is Acircle = πr2. This is buried in some long-lost Kabbala that has remained largely undiscovered. (Euclid or somebody had to figure it out independently.)

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cingold
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Join Date: Nov 2007
Posts: 519
Good Answers: 11
#5

Re: Tolerance for ASME Flange machining

05/23/2011 8:20 AM

We need an LOL button to go with Good Answer and Off Topic in the ratings. LOL
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Abdel Halim Galala
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Engineering Fields - Piping Design Engineering - New Member Egypt - Member - Member since 02/18/2007

Join Date: Feb 2007
Location: Cairo, Egypt
Posts: 1733
Good Answers: 248
#6

Re: Tolerance for ASME Flange Machining

05/24/2011 1:23 PM

At both ASME B16.5 "Pipe Flanges and Flanged Fittings, NPS 1/2 - NPS 24" and ASME B16.47 "Large Diameter Steel Flanges, NPS 26 - NPS 60", you can find the tolerances at Para. 7.

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Abdel Halim Galala (1); cingold (1); jesw55 (1); lyn (1); Tornado (2)

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