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ASME 16.5 2020 vs 2013 wrong pipe OD

minodi

Mechanical
Jan 21, 2025
1
Why did they change the outside pipe diameter of some WN flanges?
1" from 33.3mm to 33.5mm.
2’ from 60.3mm to 60.5mm.
6’ from 168.3mm to 168.4mm.
8’ from 219.1mm to 219.4mm.
24’ 610mm to 609.6mm.
Although the standard on 36.10 pipe still has the old dimensions.
Are these dimensions correct now?
 

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