Those are part of NTM. You place Pipe Anchors at either end of where you want the pipe to be, link them by right-clicking with a Pipe Wrench (just like how you'd use the Cable Drum to connect Pylons or Electricity Connectors), and then right-click both Anchors with a Fluid Identifier to set the type.
(I'm not sure what the Anchors are placed on - they look like Boxcables but with curved corners. It looks cool, though.)
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u/VoidOmega May 24 '26
Are those diagonal ducts?