Transporting tube for e.g. concrete, has coupling ring comprising ring portion with inner surface and supporting lip that is circularly lying with point against outer surface of pressure pipe, and limiting ring section

摘要

The tube has an end sided coupling ring (18`) fixed at an outer surface of a pressure pipe (16). The coupling ring has a ring portion (34) with an inner surface and a supporting lip (36) that is circularly lying with a point against the outer surface of the pressure pipe, and limiting a ring section. The supporting lip projects inwards with radial components from a radix to a point. An outer surface of the pressure pipe limits a circular shaped column space. An independent claim is also included for a method for manufacturing a transportation pipe.