Hi @Ayman_ghamrawi and welcome to the Speckle community! 
Feel free to introduce yourself if you like.
I would like to know a bit more about your workflow.
- Tell me more about your goal. Do you need pipe network in Civil3D for coordination, documentation? Anything else?
- Do you share the pipe network in your engineering team internally? Or with external project stakeholders?
- Are there any specific properties you would need from Revit in Civil3D?
Any more information and context would be appreciated.