Hi,
We get more more assembly in STEP. These are beams with more welded parts.
Is there any method to find to contact lines or surfaces bettween the the beam and the parts? We need these for get welding geometries.
Taking a quick look at the files you shared, I don't see a straightforward solution to automatically select the desired weld paths as it looks a bit ambiguous. Unless you have specific criteria to choose the weld paths you'll need some sort of manual input to specify the paths that need to be welded.