Connection end for use in exhaust systems for motor vehicles, has special coupling element made of two pre-profiled and metal strip that is wound in screw thread shaped with bars standing out radially

摘要

The connection end (13) has a special coupling element made of two pre-profiled and metal strip that is wound in screw thread shaped with bars standing out radially. The bars are located in contact range with a tubular connecting part particularly in the inside diameter of a special line segment. The special line segment and the tubular connecting part are roll seam welded on a revolution in their screw thread shaped contact zone and formed by a cross cut.