Can the stainless steel cover of the elevator hall door still be used when it is removed?

You can't. There are obvious scratches, depressions or wear on the surface of stainless steel sleeve during disassembly, which may affect its beauty and service life. The stainless steel sleeve is not closely matched with the door frame, which is easy to cause problems such as deformation of the door frame and unsmooth switch. In the process of disassembly, it is found that there are problems in the installation of stainless steel sleeve itself, which may affect its stability and safety and need to be reinstalled or replaced.