The handle to the assisted is made of metal and has welded properly at the head of the support. The selbige you've done with the plates on the support, an approximately 4-5 mm thick plate which was mounted with a circumferential weld. Thought along you also because the center is a hole in the base plates where the possibly occurring condensation can drain, grate inside so is likely to be a non-issue here. The galvanizing of-assisted is clean enough and tidy. And the matching screws for mounting I've found in my screw crate.
