Exactly what I was looking for: Cheap Fire Pit 800mm and wall thickness 3mm! Everything as described, only the top is trimmed! Therefore 4 stars from me.
Packed the brazier was only in a simple box - absolutely for me OK.
Have the top trimmed and drilled a 10mm hole in the middle so that the water can drain.
Now hope of 3mm steel for many years before he holds by rust.