My set of these just arrived too, and I'm quite impressed on first inspection.
The welds referred too above are fine for what they do, which is to stop the bolt that goes into the hex part of the rod from rotating loose. I don't believe they add anything to the strength, as the bolt head takes the load against the mounting bracket, although a 100% weld would have been better from a water ingress point of view. I might spray a bit of stone chip on that bit once fitted.
Mine were lovingly wrapped in lightly oiled cling film, so no surface rust at all.
I shall fit them later in the week, I've got a digital pitch gauge so should be able to get the rear wheel camber reasonably right, and certainly better than it is now!
What should the rear camber setting be, anybody know?