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gayanaji
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Join Date: Nov 2007
Posts: 5

DIN Flange and ANSI Flange

12/26/2007 5:10 AM

Haloo everyone,

could someone tell me the comparison between DIN flange and ANSI flange (i.e DN 300 PN 25 Flange can be replace with ANSI class .. flange?

i make a pipe stressing analisys and i have to specify the flange properties..

thank you..

regards

gayanaji
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Pathfinder Tags: DIN Flange vs ANSI Flange
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nick name
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Join Date: Mar 2007
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#1

Re: DIN Flange and ANSI Flange

12/26/2007 8:45 AM

If you make a stress analysis of flanges the best is to take the 2 data bases and compare by yourself. The importance of your work is such that you should not base it on what some body told you. Of course if it not a school work. If it is a school work it is for you better to notice the differences or similitudes by your own and build up your own opinion.
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ducon
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#2

Re: DIN Flange and ANSI Flange

12/26/2007 3:03 PM

No the holes won't match. You can specify any you want but the valves & equipments need to be flanged DIN/ANSI else you cannot fit a DIN flanged valve on ANSI flange and vice versa. Please ask your supplier to provide you with the spec sheet of both the types and you can see the difference. Practically all German equipments are DIN & American ANSI so is Japan JIS.

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Abhijit Nalawade
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Join Date: Dec 2007
Location: PUNE, INDIA
Posts: 9
#3

Re: DIN Flange and ANSI Flange

12/27/2007 12:21 AM

HI

YOU CAN NOT COMPARE THE FLANGES FROM TWO DIFFERENT STANDARDS.

DEPENDING UPON THE REQUIREMENT BY CUSTOMER (OR THE COUNTRY'S ACCEPTABLE STANDARD CODES) YOU HAVE TO DESIGN THE FLANGES AS PER DEFINED STANDARDS. THE DESIGN CONSISTS OF THE MAX. ALLOWABLE PRESSURE AND TEMPERATURE.

REGARDS
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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

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#4

Re: DIN Flange and ANSI Flange

12/27/2007 1:32 AM

DIN flanges as a German code is differs from ANSI (now recognized as ASME) flanges as American code. The ASME flanges can be specified in customary units as NPS (in inches) or in DN (in mms).

For example : for 12" NPS ≡ DN 300, that is to say that DIN is not DN.

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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

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#7
In reply to #4

Re: DIN Flange and ANSI Flange

10/08/2010 1:20 AM

Free download: ASME_Flanges_Class (PN) & NPS (DN).

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Anonymous Poster
#8
In reply to #4

Re: DIN Flange and ANSI Flange

12/30/2010 2:08 PM

Great answer. I have been going round and round for a while.
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gayanaji
Member

Join Date: Nov 2007
Posts: 5
#5

Re: DIN Flange and ANSI Flange

12/27/2007 2:41 AM

thank you so much for all the comments..

so if specified flange DN 300 PN 25 BS EN 10028-2 flange, could someone give me the properties please (i.e. Dimension, pressure rating and temperature..)

Regards
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#9
In reply to #5

Re: DIN Flange and ANSI Flange

02/14/2023 5:50 AM

Yes. A Google search can.

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vidyadhar deodhar
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Join Date: Apr 2007
Location: DOMBIVLI,MUMBAI SUBARB, MAHARASHTRA,INDIA.
Posts: 77
#6

Re: DIN Flange and ANSI Flange

12/27/2007 10:52 AM

DEAR SIR

I , UNDERSTAND YOU WANT TO KNOW FOR NOMINAL SIZE OF FLANGE 12" (300MM) OF PN25 WHICH IS THE EQUIVALENT PRESSURE RATING IN ANSI(ASME) FLANGE, IS IT SO ?

THEN ,PLEASE NOTE 'PN25' IS NOT EQUIVALENT OR ALTERNATIVE TO ANY OF PRESSURE RATING OF ASME SUCH AS 150#,300# SO ON.

IN DIN PRESSURE RATING IS KG/CM.SQ. AND IN ASME IT IS lb /INCH.SQ.

TEMPLATE DIMEN. SUCH ASOD,RFD,PCD,HOLE DIA,NO OF HOLE ARE NOT MATCHING OF BOTH STD.

THAN YOU

V.D.DEODHAR.
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Users who posted comments:

Abdel Halim Galala (2); Abhijit Nalawade (1); Anonymous Poster (1); ducon (1); gayanaji (1); nick name (1); PWSlack (1); vidyadhar deodhar (1)

Previous in Forum: Precipitators and Traps in Plumbing?   Next in Forum: Pressure Drop in HVAC System Due to Reducer?

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