Patent ID: 6520211
Filing Date: 2003-02-18
Classification: B65G,F16L

Abstract:
A transport pipe for solid materials comprising:a single layer pipe section having a threaded first end and a threaded second end; a first coupling collar having a first threaded collar portion configured to be threadedly connected to the threaded first end; a second coupling collar having a second threaded collar portion configured to be threadedly connected to the threaded second end; wear-resistant layers located in the region of the first and second coupling collars; the pipe section having a hardened inner mantle, wherein the threaded first and second ends have outer threads and wherein the first and second coupling collar s each have an end face facing away from the pipe section, wherein the first and second threaded collar portions are inner threads positioned remote from the end faces of the coupling collars, wherein the wear-resistant layers are rings that are hard at least within a radially inner region, wherein the threaded first and second ends have outer threads positioned at an axial spacing from end faces of the pipe section and wherein the first and second coupling collars each have an end face facing away from the pipe section, wherein the first and second threaded collar portions are inner threads positioned remote from the end faces of the coupling collars, further comprising seals integrated between the coupling collars and the pipe section.