Adding Volume to Multi-linked Curve Geometry

Hello I am trying to achieve adding volume to Curve geometry (Image 1 to Image 2 below) could you help me on how to achieve that?

I prefer non-destructive workflows if possible. Thanks in advance

Hi @kutay.coskuner
In Rhino7 you can try the MultiPipe command, or the MultiPipe component in Grasshopper.
This produces a SubD, but if you want the faceted version you can use ExtractControlPolygon to get the mesh

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Thank you very much!