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Anonymous Poster #1

API Class vs. Schedule Pressure Ratings

12/09/2011 10:09 AM

Can anyone help me with conversion of API Class pipe pressure ratings into Schedule, which I am able to deal with in the UK?

In particular I need to find the pressure ratings for e.g. 3/4" Super Duplex API 10,000 , but unsure if this relates to psi or some other rating.

Thanks
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SolarEagle
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#1

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 11:48 AM

Yep Yep, just pull out the old toolbox here...

http://www.engineeringtoolbox.com/pipes-pressure-rating-t_40.html

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Doorman
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#2
In reply to #1

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 11:58 AM

500 posts brings you the Guru badge. Well done my friend!

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SolarEagle
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#3
In reply to #2

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 12:38 PM

WoooHooo who da man!

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lyn
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#4
In reply to #1

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 1:32 PM

I didn't find what the OP is looking for when I went there. Did I miss something, again??
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SolarEagle
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#5
In reply to #4

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 1:51 PM

The site takes some practice, try the search feature...

http://www.engineeringtoolbox.com/astm-steel-pipes-pressure-temperature-d_742.html

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lyn
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#6
In reply to #5

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 1:56 PM

Maybe it's just me.
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SolarEagle
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#7
In reply to #6

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 3:07 PM

Oh, I think I see what you're saying the xxs or super duplex has no corresponding schedule number...and the 3/4" measurement given would indicate xxh as per ASME B36.10 not ANSI/ASME B31.3 Process Piping. Is that what yer sayin'?

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lyn
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#8
In reply to #7

Re: API Class vs. Schedule Pressure Ratings

12/09/2011 6:12 PM

Nope. But the issue isn't worthy of any further discussion here. If I need to know which is which, I'll just ask you.
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manzoor ahmad tarafdar
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#9

Re: API Class vs. Schedule Pressure Ratings

12/10/2011 4:31 AM

Hi Anonymous,

The following link might be helpful

http://www.mycheme.com/technicaldata/standard-pipe-sizes.html

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HydroScot
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#10

Re: API Class vs. Schedule Pressure Ratings

12/12/2011 3:41 AM

I had previously tried engineeringtoolbox without success. The link from Mansoor also gives pressure ratings for Schedule pipe but not in relation to API class.

Thanks anyway
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manzoor ahmad tarafdar
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#11
In reply to #10

Re: API Class vs. Schedule Pressure Ratings

12/12/2011 10:32 AM

The link opens a 9 page article,please read pages 7-8 & you will get the answer.
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HydroScot
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#12
In reply to #11

Re: API Class vs. Schedule Pressure Ratings

12/12/2011 10:53 AM

Manzoor,

The link opens only one page from my end. I have tried all the individual headings but am missing something (the missing link?). There does not appear to be any page numbers that I can find.
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manzoor ahmad tarafdar
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#13
In reply to #12

Re: API Class vs. Schedule Pressure Ratings

12/12/2011 11:48 AM

After table for pipe sizes there are paragraphs for pipe diameter & pipe sizes.Please read these two paragraphs.
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HydroScot
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#14
In reply to #13

Re: API Class vs. Schedule Pressure Ratings

12/13/2011 3:38 AM

Yes, I see the script, but I don't see anything that relates API to an equivalent Schedule?
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