Method for manufacturing a finned tube, in which a tube base body is finned on its outside, in particular helically, by a band, to which end the band is taken to the tube base body using a guide element and is attached to the base body, in particular by means of a laser beam, characterized in that the guide element is adjusted in particular in respect of its orientation relative to the tube base body during the attachment process.

A heat exchanger having a primary flow path arranged to contain a first heat exchanging medium. A secondary flow path arranged to contain a secondary heat exchanging medium, wherein the primary flow path surrounds the secondary flow path for exchanging heat between the two paths.

A heat exchanger having a primary flow path arranged to contain a first heat exchanging medium. A secondary flow path arranged to contain a secondary heat exchanging medium, wherein the primary flow path surrounds the secondary flow path for exchanging heat between the two paths.