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DN 1050 Flange Info

DN 1050 Flange Info

DN 1050 Flange Info

I have a vendor dwg for a vessel that calls out DN 1050 flange. We know that 1050 is the O.D. of the pipe in millimeters, but we can't find the bolt circle and diameter on the vendor dwg. So we looked up info for DN 1050 flg but can't find an exact match for a "DN 1050 flange", can someone enlighten us on this standard......Thanks

RE: DN 1050 Flange Info

PiperFE (Mechanical)

Flange dimensions  
To review the dimensions and weights of frequently used ANSI WN and LWN flanges, and some DIN flanges as well Continue >

RE: DN 1050 Flange Info


DN1050 definitely does not indicate any dimensional standard. It only indicates the Nominal Diameter to be 1050 millimeters.
Your flange appears to be specially taylored for this application, not engineered to standard dimensions.

I would suggest the clarify the following:
Do you have any pertaining drawings showing "nozzle details"?
Do you have any spare gaskets in your warehouse, that may indicate the dimensional standard?

RE: DN 1050 Flange Info

DN 1050 flange maybe is 42" flange. Looking for more information on your drawings.
If that is, I think you can find the answer in ASME B16.47.
Series B always be uesed on vessels.

RE: DN 1050 Flange Info

PiperFE (Mechanical)

Flange dimensions  


To review the dimensions and weights of frequently used ANSI WN and LWN flanges, and some DIN flanges as well Continue >  

Standards available:
ANSI B16.5 - American standard flanges
B16.47 a - serie is former MSS SP-44
B16.47 b - serie is former API 605
ISO DIN 2631 - 2638  


RE: DN 1050 Flange Info

Thanks to all for the help......PiperFE

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