As Aios said before, HR-17 robots can stand stably on any surface as long as the solid surface is made of metal. Because the supporting machine room is very narrow, the robots even do what they have to do in various ways and steps, including upside down.
It only took half an hour for the four HR-17 robots to install the pipes, they even worked independently without the help of other technicians—because the room conditions were very impossible for humans to be there without breathing apparatus—and they all properly installed.
"Please double-check all energy supply connections!"
Everyone rushed—as well as the four HR-17 robots—to check again for any pipe connections that might not be properly connected, as well as things that could interfere with the stability of their ship.
"Connection to machine support one, steady," said the HR-17 robot under the ship's muzzle reporting the condition of the energy pipe connection in that section.
