Patent ID: 8074686

Claim:
A transport pipe for high viscosity materials, comprising: an inner pipe ( 10 ) made of an abrasion-resistant plastic, at least one joint element ( 12 ) materially joined to an external end of the inner pipe ( 10 ), which includes a radially extending collar ( 16 ) and a ring sleeve ( 18 ) concentric to the inner pipe ( 10 ) extending axially from one side thereof, a reinforcing jacket ( 14 ) enclosing at least the internal pipe and connected thereto and to the joint element ( 12 ), wherein the reinforcing jacket ( 14 ) is formed by a fiber structure impregnated in a plastic matrix, and wherein the fiber structure includes axially laid cross plies and/or radially laid circumferential plies or tiers, wherein the radially projecting collar ( 16 ) of the joint element ( 12 ) is defined by a ring shaped end face ( 20 ) and by a thereto joined ring step ( 22 ) extending radially towards the inside of the pipe and recessed axially from the ring-shaped end face ( 22 ), wherein the plastic material of the inner pipe ( 10 ) engages from the inside of the pipe in the ring step ( 22 ), wherein the ring sleeve ( 18 ) exhibits a wave shape running in the axial direction, wherein the wave peaks of the wave shape are presented on the exposed outer surface of the transport pipe, and wherein sequential wave peaks ( 38 ) of the ring sleeve ( 18 ) exhibit a decreasing radial height going towards the free end of the ring sleeve ( 18 ).