Regretfully our MEP beam splice is limited to wide flange shapes in Ram Connection v11. We still have some work left to implement more HSS connections.
I suppose you could look at it as a base plate, but that's not ideal.
Limcon currently has a joint type called RHS Bolted moments End Plate with 4 or 8 bolts that might also help. Similar to the base plate approach, Limcon only investigates the connection from one side.
