Double-wall tube, method for its manufacture and application

The double-walled tube (10) has a tube casing with an outer wall (12) and an inner wall (14), where channels (19) run together in parallel between both the walls. The tube casing consists of an outer tube and an inner tube. The double-walled tube is manufactured from ductile material that is selected from the group of: metal alloys, copper alloys, ferrous alloys, or light metal-alloys. An independent claim is also included for a method for manufacturing a double-walled tube.