This appears to be a software bug.
In profile view, if you have a single pipe with two flared end sections attached, the pipe hatching will not display if both flared end sections are shown with correct elevations. If you adjust one flared end section's elevation so that it is no longer appropriately connected to the pipe, the pipe hatching displays correctly.
This software bug is shown in the attached screencast: https://screencast.autodesk.com/Main/Details/3c461604-8242-4e1a-bd90-9898b9174191
I am not a pipe guru, so I cannot help.
Christopher Stevens
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I don't recall this in my workflows. Can you post the screencast link? A sample file would also help. Are you using any custom structures?
John
John Mayo
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