A method for continuously producing coaxial cables with a radially closed outer conductor from non-ferrous metal with a wall thickness of less than 0.15 mm, comprising: - Feeding a flat strip of non-ferrous meal with a first feeding speed to a forming device, wherein the thickness of the strip corresponds to a wall thickness of the hollow profile to be produced, - feeding an inner conductor coated with a dielectric, - continuous forming of the fed flat strip into a shape corresponding to the outer conductor of the coaxial cable, wherein two opposite edges of the flat strip abut flush against each other after the forming in a contact region extending in the longitudinal direction of the hollow profile, and wherein the inner conductor coated by a dielectric is fed before the closing of the hollow profile forming the outer conductor, so that the inner conductor coated by the dielectric lies in the hollow profile, - continuous welding of the edges that abut flush against each other in the contact region without prior treatment to reduce optical reflections, wherein the edges to be welded are guided at the first feeding speed past a fixed welding area in relation to a device implementing the process, and wherein a point in the welding area is heated by means of a laser, which emits light with a wavelength of less than 600 nm, and wherein the heated point has a diameter, which is smaller than 20% of the cross section dimension of the hollow profile, - pulling the welded coaxial cable out of the welding area, - inserting a helical or parallel corrugation in the outer conductor of the coaxial cable without first reducing the cross section dimensions and/or the wall thickness by means of a drawing process following the welding, and - receiving the coaxial cable in a receiving device. - Feeding a flat strip of non-ferrous meal with a first feeding speed to a forming device, wherein the thickness of the strip corresponds to a wall thickness of the hollow profile to be produced, - feeding an inner conductor coated with a dielectric, - continuous forming of the fed flat strip into a shape corresponding to the outer conductor of the coaxial cable, wherein two opposite edges of the flat strip abut flush against each other after the forming in a contact region extending in the longitudinal direction of the hollow profile, and wherein the inner conductor coated by a dielectric is fed before the closing of the hollow profile forming the outer conductor, so that the inner conductor coated by the dielectric lies in the hollow profile, - continuous welding of the edges that abut flush against each other in the contact region without prior treatment to reduce optical reflections, wherein the edges to be welded are guided at the first feeding speed past a fixed welding area in relation to a device implementing the process, and wherein a point in the welding area is heated by means of a laser, which emits light with a wavelength of less than 600 nm, and wherein the heated point has a diameter, which is smaller than 20% of the cross section dimension of the hollow profile, - pulling the welded coaxial cable out of the welding area, - inserting a helical or parallel corrugation in the outer conductor of the coaxial cable without first reducing the cross section dimensions and/or the wall thickness by means of a drawing process following the welding, and - receiving the coaxial cable in a receiving device.