摘要:
The present invention relates to a reinforcing sleeve which is substantially tubular and designed for placing inside a coupling pipe (22) in an assembly with the coupling pipe which forms part of a coupling (20). The sleeve is provided with a slit (5) extending at least in axial direction (7) of the reinforcing sleeve, and wherein the slit (5) is enclosed by slit edges (9) of the reinforcing sleeve. The slit edges define an intermediate space which is variable in that the sleeve takes a flexible and resilient form, wherein the dimensions and the form of the reinforcing sleeve are chosen such that the contour of the reinforcing sleeve can be placed inside a coupling pipe and there connects closely to an inner wall of the coupling pipe after placing. The reinforcing sleeve optionally comprises toothings for fixation to the coupling pipe. The present invention further relates to a method for welding an outer end of a multilayer conduit to the above stated assembly.