I've just come across a Manufacturing Facility on my planet and am trying to open the door, but with little success.
Unlike the locked doors in Space Stations and Outposts which ask for an Atlas Pass, these just state the door is reinforced.
My mining laser doesn't seem to do anything to it, but also didn't attract the sentinel droids that were around.
Best Answer
To open these kind of reinforced doors you must either install a boltcaster on your Multitool or Plasma Grenades. This will attract the sentinel droids though when destroying the door. Personally I recommend the Grenades, because they can destroy the doors much faster than the Boltcaster. :-)