Guys, we live in so different countries all over the world that I'm only surprised how we understand each other using only Google translator!
In the countries of the former USSR, this is an "electric rivet", in the countries of the British Commonwealth, this method of joining thin-sheet steel parts is called somehow differently.
But we all use this welding method.
I recently learned to cook using the MAG method.
Then I was 50 years old, now 67.
I do not often do welding work, only repairing my car and very rarely other people's cars.
To obtain a welding point using the MAG method, it is necessary that the hole has a diameter of at least 7 mm, the parts are tightly compressed and work with the maximum possible current - then the molten metal is squeezed out to the inside of the seam and the face of the point turns out to be flat or slightly concave.
The seam is strong and there is less work to strip it.
But this does not always work.
I am sure that those of you who know how to work with the MAG method know this.