A metallic tube structure having a longitudinal extension comprising a first tubular portion having an inner surface and an outer surface, wherein the first tubular portion is made of a metal, and a sensor structure comprising at least one sensor and at least one sensor signal line, the at least one sensor being connected to the at least one sensor signal line, which at least one sensor is configured to detect a physical parameter of the first tubular portion, and which sensor structure is arranged longitudinally on at least a part of the outer surface of the first tubular portion, and a protective member; characterised in that the sensor structure is formed as a stack of thin-film layers, wherein the stack comprises at least a first electrically insulating thin-film layer and at least one electrically conducting thin-film layer, wherein the first electrically insulating thin-film layer is mechanically bonded to the outer surface of the first tubular portion, wherein at least the first electrically insulating thin-film layer is arranged to electrically insulate the at least one electrically conducting thin-film layer from the first tubular portion, wherein the at least one sensor signal line extends along at least a part of the outer surface, wherein the at least one sensor signal line extends in the stack, and wherein at least a portion of the sensor structure is covered by the protective member, the protective member being arranged in direct contact with the portion of the sensor structure and at least a part of the first tubular portion and wherein a wall thickness of the first tubular portion is constant in a tangential direction of the first tubular portion. a first tubular portion having an inner surface and an outer surface, wherein the first tubular portion is made of a metal, and a sensor structure comprising at least one sensor and at least one sensor signal line, the at least one sensor being connected to the at least one sensor signal line, which at least one sensor is configured to detect a physical parameter of the first tubular portion, and which sensor structure is arranged longitudinally on at least a part of the outer surface of the first tubular portion, and a protective member; characterised in that the sensor structure is formed as a stack of thin-film layers, wherein the stack comprises at least a first electrically insulating thin-film layer and at least one electrically conducting thin-film layer, wherein the first electrically insulating thin-film layer is mechanically bonded to the outer surface of the first tubular portion, wherein at least the first electrically insulating thin-film layer is arranged to electrically insulate the at least one electrically conducting thin-film layer from the first tubular portion, wherein the at least one sensor signal line extends along at least a part of the outer surface, wherein the at least one sensor signal line extends in the stack, and wherein at least a portion of the sensor structure is covered by the protective member, the protective member being arranged in direct contact with the portion of the sensor structure and at least a part of the first tubular portion and wherein the at least one sensor signal line extends along at least a part of the outer surface, wherein the at least one sensor signal line extends in the stack, and wherein at least a portion of the sensor structure is covered by the protective member, the protective member being arranged in direct contact with the portion of the sensor structure and at least a part of the first tubular portion and wherein a wall thickness of the first tubular portion is constant in a tangential direction of the first tubular portion.