The range of the AP228 is dependent on the used antennas and the environment. The AP comes without antenna's.
If you would ask for a suggestion for an AP in this kind of environment, the 228 would be part of the options.
Please work with your Aruba partner or local Aruba SE/Sales team as factories can be one of the hardest environments to provide proper WLAN. It is not possible to get a design in this forum for this situation.