New to the board.....
We are currently in the process setting up our office styles, switched over to C3D a week ago. Hopefully this suggestion isn't to simplistic and will work for you.
Our office standard is a similar line type to what you posted. We went into Pipe Styles, Plan tab, and in the Pipe Centerline options select Specify Width: Draw to inner walls. Then in the Pipe Styles, Display tab, make Plan Pipe Centerline the only visible line.
By doing this we eliminated the need for hatch settings in the plan view. Hopefully this will help.