To change pipe size or spec

1. In the drawing area, select one or more pipe or fitting objects.
2. Right-click in the model.
3. In the shortcut menu, click Properties.
4. If you want to change the pipe spec do the following:
   • In the Properties palette, click Plant 3D group Spec.
   • In the Spec list, click a pipe spec.
     
   • In the Properties palette, click Plant 3D group General NominalDiameter.
   • In the NominalDiameter list, click a different size.