Pipes from lines_2

Hi everyone, I have been trying to create pipes from lines with no luck. Can anyone please help out to see what I have got wrong in the graph below. Similar issues have been solved in other threads on pipe from lines and I have tried using them but node Pipe.ByLines still returns empty lists.

Instead of PipingSystem, you should get the PipingSystemTypes.

@ T_Pover. Really appreciate it. It works!!!

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hello, I drew all the pipes in different layers and diameters, as an example, I leave the dwg version. can you help me how can i do this with this encoding file?
Drawing1.dwg (63.2 KB)