It comes out like what you put in !!The process is the same whatever steel you use , stainless, rebar etc. It's a continuous process going through smaller and smaller dies or rollers .The old way used a series of rollers and the steel snaked back and forth .The new way is linear.
____ ______
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O O O O O
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|__X__| |______|
This is the old way where a line of rollers , O ,are used . A worker ,as the wire came through , would grab the end with tongs, turn 180* and insert the end into the next set of rollers. It get's exciting with the smaller and faster end !! There should also be safety posts as marked by the X so the hot wire doesn't grab the worker.
That drawing has been changed by posting !! But I hope you get the idea.