Two different thickness Flange and Pipeline

[Cesar Almada]

Good Afternoon Engineers

I have a 16 inch flange with a thickness of 0.500'', is it possible to make a counter bevel and leave it up to 0.375'' which would be a decrease of 0.125'' (1/8'').

If it is possible and I have my flange thickness at 0.375", can I weld to a 0.344" pipe? I read the ASME B31.8 code as shown in the picture FIG I-4 item (B) it is possible to weld up if i have 1/32 and i have 1/32 and in FIG I-5 item (A)says to 0.09375 and I only have a 0.031 difference.

Can I do these actions?

Thanks for your help! here attached the part of the code

 

[1503-44]

Yes, if your design code is B31.8

 

[LittleInch]

But why can't you just buy the flange bored to 0.344"??

If your pipe is a stronger material than the flange then this might not be allowable.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[Cesar Almada]

The type of material of my flange and my pipe its similar, everything is the same only different is the Thickness.

I can't buy another Flange because the delivery time is very long and we need to finish the project on January so is more easy use those flanges.

Thank you a lot

 

[LittleInch]

If you can get it machined for a counter bevel you can get it bored out. Any machine ship will do this for you

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.