Hi corne
I think hose behavior in connection of tank to piping also be same.
In loading/unloading area where hose is connected between piping to truck anchor support is used ((as a minimum (holddown+guide) support & if possible limit support also added)) because some axial & lateral force is expected for hose handling.
Within piping also prefer rest+guide+axial stop support after hose.
I don't think Hose can be considered as long untied expansion bellow.

Let's some expert share their knowledge on the issue.

Regards

Habib