Currently, you are able to deconstruct and reconstruct most things on the station. However, whether due to an oversight or for some other reason, there are still a few things that can't be deconstructed without brute force, and some that just be deconstructed.
I've begun to compile a list, along with suggestions for HOW to deconstruct them!
Filing Cabinets-
Space Heaters-Screwdriver open a panel, wirecutter some wires, crowbar out a circuit board, weld.
Conveyor Belts-Wrench to pick up, welder to turn into metal.
Firelocks-Screwdriver, opens a panel! Wirecutters cut wires, crowbar out a circuit board, weld into scrap metal.
Chem Machines - Should be made constructable and deconstructable like normal machines, with a circuit board etc.
Credit to Citinited, Skyping, and Dman for helping me remember things that can't be deconstructed! Reply with more things!