I am not saying not to put both part on the same drawing, I am just telling you how we do it. Anytime we have parts that have thier own part numbers, we make the weldment an assembly. You can bring a part into another part but you cannot bring in the parts custom properties into the cut list.
We use sldlfp (library features).SolidworksWeldments
We use sldlfp (library features).SolidworksWeldments