I work for a pipe design company. We are looking for pipe design packages. Does progeCAD have any packages?
You can have a look at CP-System plumbing, maybe the mechanical or HVAC modules:
http://www.caddit.net/progecad/anti-bim.php
If you are looking for more of a 3D design you can either model with progeCAD ACIS solids or use a third party ACIS compatible CAD like Alibre then import the ACIS solid to progeCAD:
http://www.cadcam.com.au/