For that reason, the best concrete screws are either stainless steel, galvanized, HDG, or zinc coated.
Many are simply coated with a corrosion-resistant layer, which is usually blue. These materials do better in damp conditions and resist the moisture present on concrete surfaces.
For our assembly machine, we would consider this situation to add a protection layer on our vibration bowl to prevent damage to the surface.
We will think of all the situations for you, so please feel free to inquire with us.