The only way I know is by means of Route Segment Properties.
Edit route
highlight a segment
right mouse click
from the pop up menu select Route Segment Properties
In the left hand pane you'll now be able to change the pipe, be it config or even selecting different pipe template, as well as what the standard Elbow should be
after making the chances click the green check mark and leave the editing mode
now you'll have altered that one segment to the new size/PN/SDR/schedule or material
This does mean that you'll have to do that for each and every pipe segment.
Saeenath,
As far as I know you can't do it in one shot.
The only way I know is by means of Route Segment Properties.
This does mean that you'll have to do that for each and every pipe segment.
Have a nice one.