TUBULAR CONNECTING PIECE FOR HELICALLY GROOVED TUBES

摘要

The invention relates to a tubular connecting piece for grooved tubes whereby one or more ends of the piece are at least partially closed by two end planes making an angle with respect to one another. Each end plane covers at least a part of the half section of one end of the connecting piece. The end edges of the end planes are connected by planes extending parallel to the longitudinal direction of the part of the connecting piece comprising said end planes.