▎ 摘　　要

NOVELTY - The tube has an inner component (10) made of metallic material in a form of a tube comprising an outermost surface (11) and an innermost surface (12). An outer component (20) made of metallic material comprises a base surface (21B) at which the base surface is mechanically connected to the inner component. The outer component is configured for a fluid to flow over externally. The base surface extends around the outermost surface of the inner component, where a layer (5) comprising graphene in pure form or in derivative form is provided between the outermost surface of the inner component and the base surface of the outer component. USE - Two-component heat exchanger tube for use in petrochemical, energy, manufacturing and production sectors for transferring heat from a high-temperature fluid to a low temperature fluid. ADVANTAGE - The heat exchanger tube has improved performance in terms of thermal conductivity, with respect to exchanger tubes of known type of the same type. It is reliable and easy to manufacture at competitive costs. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for producing an exchanger tube. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a heat exchanger tube. 10Inner component 11Outermost surface 12Innermost surface 20Outer component 21BBase surface