Pipe weld other than fillets

I am trying to model some pipe fabrications. In them I want to do
some butt welds, chamfer welds and toerh types. Many of them will
have the need for root space, which is effectively a 1/2" gap between
the parts to be joined. In an assembly, this is very easy to do,
since a variety of weld structures are supported. It appears that
only fillets are supported in a weldment..

For now, I am just modeling the weld as a revolved solid but I am
hoping for a more elegant answer. Is there?

 

No. Solidworks is limited in this area. Your solution sounds nice
though.