ROHR MIT ABWECHSELND ANGEORDNETEN GLATTEN ROHRABSCHNITTEN UND WELLROHRABSCHNITTEN

摘要

The tube (10) has corrugated-sector walls composed of several radially outward-projecting corrugations, and is in the form of a rollout string of alternating smooth sectors (12) and corrugated sectors (16) of about the same length and with a constant internal diameter. The external diameter of the smooth sectors corresponds to the internal diameter of the coupling of a coupling tube, with allowance for play.