What is called a steel rivet?
In the 60 and 70s, high-strength bolts have not yet, welding technology is not as advanced as now, so many of the steel structure connections, by rivets, see the old movies, sometimes see.
It's going to be an antique. Aluminum or steel rivets are used for locking structures when they are used for retaining structures, not for structural purposes. As for the thin steel plate, the steel structure is not good, and at the very least, the structural professional pays little attention to rivet pulling.
