Hi @Mahmoud-Rawi ,
Welcome to the community! Feel free to Introduce yourself 
to the community if you want to! 
Thanks for sharing a sample file. I was able to reproduce your issue. They are actually exported but they do not have any geometry so they don’t show up in the viewer.
It seems it’s only possible to select a pressure pipe from the prospector. Because when I select the alignment object and publish it to Speckle, I am able to see its geometry.
I will add this to our backlog. Thanks for reporting it.