The numbers you mentions are just "rules of thumb" so shoes commonly shown in the generic pipe supprt standands can be used. In addition companies set generic clearance limits so loops, etc. will not bump into anything when the piping expands.

There is no limit other than practical shoe lengths, clearance to freely expand, shoes/supports stay on the structure, and stresses are within allowables.

I have designed non-symmetric loops to accomodate 34" (860mm) of expansion from one side. And I am sure many other stress engineers have "fish stories" that could easily exceed this benchmark.