Can centerline display in the 3D model be turned off in a round duct?
All round ducts automatically have centerlines when they are placed in the 3D model, which you can name through the Part defintion in Dataset Explorer under Centerline Symbology for the Part, but the only way to turn them off in the 3D model is to to turn off this level in the Level Display dialog.This same will apply for any type of Ducts.