I have a different approach because i want to read out how much U-235 and U-238 i have in the whole system.
So i build a "circle" around the centrifuges and it transports both types around the installation. Its easily expandable to the left or right.

The inner position on the belt contains the 238 ...

Love your designs guys - really appriciate your work.

I added a little combinator to your designs so i can read out any wanted material from the logistic network. (I know i could press L - but i am lazy :) )
Here i have an overview of my Uranium 235 and 238 - to be able to keep track from a ...