Hi,
Every drawing is unique, therefore you should always have title block with drawing name and number. Drawing name can be same for different drawings, for example "flange", "shaft" etc, but drawing number need to be always unique. I do not know your drawings numbering system, but one way to...
In current situation half-section view would be proper or prefered to use, because it is symmetrical object and therefore both interior and exterior of the details can be indicated in the same view. Thus parent view is not neccessary...
