Thank you for the reply. just wondering no one has brought this up in this 3 years? Check the Errta page of ASME commitee page also.
I also think it is just a typo. :)
Dear All
We noticed that the Minimum Thickness of Flange for NPD30 Class 900 has changed to 129.4mm in Table 35, where it is 149.3mm in version 2017.
This is a significant change and is not consistent with the US Customary value in Table 35C of Version 2020 as well.
Anyone can share some...