Dear Friends,

I have a pad type flange with tapped holes for screw.(bolting)

It is having OD : 800mm ID:700mm & full face gasket from ID to OD.

can i design the flange as integral type reverse flange with no provision of hub as per the diagram 2-13.1 in appendix 2?

I will be providing welding on the outside of the flange od as shown in figure UG-40 a-2. is it correct?

Appreciate help.
Regards
ASD23789