Is there any way in WaterGEMS / WaterCAD through which we can find the total number of bends in our hydraulic model?
As you have seen, we don't have a quick way to do this in WaterGEMS.
You can do it using GIS software though. So,
1. Open a Pipe FlexTable in WaterGEMS
2. Click Export to File and export the pipe data to a Shapefile
3. Open that shapefile in your GIS software, add a new field then count up the vertices. See here for instructions for ArcGIS: https://support.esri.com/en/technical-article/000011230 or here for QGIS: http://www.qgistutorials.com/en/docs/counting_vertices.html
4. Optionally import that back into WaterGEMS as a User Data Extension field using the ModelBuilder tool.