Extrude Dup(duplication) scene

I created this from the techniques learnt in the Extrude Dup video tutorial and previous learning.
Start with a circle select Extrude Dup in the Mesh Tools panel. To bend the pipe you press spin but make sure you have the cursor in the right place Shift S will help it is also important that you have the camera in the right place. Box select the circle at the end of the pipe and press spin set at 90 degrees with the correct positioning to spin it in the correct direction.