Join our CAD community forums where over 25,000 users interact to solve day to day problems and share ideas. We encourage you to visit, invite you to participate and look forward to your input and opinions. Acrobat 3D, AutoCAD, Catia, Inventor, IronCAD, Creo, Pro/ENGINEER, Solid Edge, SolidWorks, and others.
Not sure...but if you ultimate objective is to analyze that weld (for stresses or fatigue life), there are new methods that do not require the seam weld material to actually exist in the geometry nor even in the FE mesh that is built to that geometry. It's a useful breakthrough (if that's your end goal) because modeling welds (and meshing them in particular) is a big pain.