You're thinking of factory welding, manufacturing or maybe repetitive pipeline welding and thinks like that.
It'll be a while until a robot disassembles a trailer enough to remove the bent axle, cleans off all the paint and rust, bends the trailer back into shape where needed, cuts a custom support to makeup for some lost strength, welds it in, primers it, paints it, and assembles the trailer.
It'll be a while until a robot disassembles a trailer enough to remove the bent axle, cleans off all the paint and rust, bends the trailer back into shape where needed, cuts a custom support to makeup for some lost strength, welds it in, primers it, paints it, and assembles the trailer.
Same for construction too.