The invention relates to a winding tube for winding up bands, films, sheets of
metal or similar made of a spiral shaped wound metal strip whose adjacent strip
windings overlap at least partially. The metal strip has a corrugated or ribbed
profile in the cross-section thereof, whose external corrugated heads (1)
are disposed on the outer wall of the winding tube after winding and are wider
than the internal corrugated heads (2) disposed on the inner wall of the
winding tube after winding.