ASME B16.5 Flanges, What is "Minimum Thickness For Lap Joint?"

[Headphone5]

On page 167 of my 2017 edition of ASME B16.5 they give flange dimension specs for different types of flanges.
I am using a lap joint flange, and one of the dimensional columns is "Minimum Thickness for Lap Joint", however I can't find what dimension this is actually referring to.


It could be the thickness of the flange plus the thickness of the stub end you use? It could also just be the thickness for the flange in the lapped case? Maybe even something different like the thickness of the space between your two flanges.

 

[GBTorpenhow]

It's t_f, there is a missing "t_f" in this column header/label. See the Class 300 table further down on p174.

 

[LittleInch]

I'll go with that. If you look at the metric version (p77) is shows what tf is also.

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

 

[r6155]

You must use the latest 2020 edition.

Regards

 

[Headphone5]

Thanks all