Patent ID: 8727388

Claim:
Coupling arrangement comprising: a helically shaped corrugated metal pipe cut at its end along a screw thread so that an end face extending along the screw thread of the corrugations of said corrugated metal pipe is obtained; and a coupling body for attachment to said metal pipe, said coupling body having a fastening part having metal which has a helically shaped contour extending in an axial direction of the pipe and corresponding to the screw thread of the corrugation of the pipe, wherein, in the mounted position, said fastening part of said coupling body rests against the pipe by engaging in the corrugation of the pipe, wherein said coupling body has a connecting part integrally connected with the fastening part, wherein the outer diameter of the connecting part is cylindrically shaped and has a smooth outer circumferential surface that corresponds to the inner diameter of the pipe, wherein the connecting part protrudes in the mounted position in an axial direction out of the pipe, and wherein a metal holding ring is mounted on and rests against the connecting part, wherein the outer diameter of the holding ring corresponds approximately to an outer diameter of the pipe, where an end face of the holding ring facing the pipe extends along a screw thread corresponding to the screw thread of the pipe, and where the holding ring is connected in the mounted position, fixedly to the connecting part by resting fixedly and tightly against the end face of the pipe.