Brazing method for joining two metal components, such method comprising the following operating steps: - a step of prearranging a first metal component provided with a connection end and a second metal component provided with a connection portion, at least said first component having tubular shape; - a step of arranging said first component of tubular shape with said connection end facing the connection portion of said second component defining with the latter a junction slit; - a step of prearranging a bead of filler material on the mouth of said junction slit; said brazing method being characterized in that it further comprises: - a step of irradiating, with at least one laser beam, at least one fraction of the connection end of said first component and/or at least one fraction of the connection portion of said second component, defining an impact area of said at least one laser beam, such laser beam transmitting thermal energy on said impact area; said at least one laser beam having a power density at said impact area between 5 W/mm 2 and 400 W/mm 2 operating in continuous regime, or between 100 W/mm 2 and 1000 W/mm 2 operating in pulsed regime; in said irradiating step, said bead being outside said impact area; - a step of transmitting, via conduction, said thermal energy from said impact area to said bead; - a step of melting said filler material, and in such melting step said thermal energy, transmitted via conduction to said bead, at least partially melts the filler material of said bead, such melted filler material penetrating via capillarity in said junction slit. - a step of prearranging a first metal component provided with a connection end and a second metal component provided with a connection portion, at least said first component having tubular shape; - a step of arranging said first component of tubular shape with said connection end facing the connection portion of said second component defining with the latter a junction slit; - a step of prearranging a bead of filler material on the mouth of said junction slit; said brazing method being characterized in that it further comprises: - a step of irradiating, with at least one laser beam, at least one fraction of the connection end of said first component and/or at least one fraction of the connection portion of said second component, defining an impact area of said at least one laser beam, such laser beam transmitting thermal energy on said impact area; said at least one laser beam having a power density at said impact area between 5 W/mm 2 and 400 W/mm 2 operating in continuous regime, or between 100 W/mm 2 and 1000 W/mm 2 operating in pulsed regime; in said irradiating step, said bead being outside said impact area; - a step of transmitting, via conduction, said thermal energy from said impact area to said bead; - a step of melting said filler material, and in such melting step said thermal energy, transmitted via conduction to said bead, at least partially melts the filler material of said bead, such melted filler material penetrating via capillarity in said junction slit. - a step of irradiating, with at least one laser beam, at least one fraction of the connection end of said first component and/or at least one fraction of the connection portion of said second component, defining an impact area of said at least one laser beam, such laser beam transmitting thermal energy on said impact area; said at least one laser beam having a power density at said impact area between 5 W/mm 2 and 400 W/mm 2 operating in continuous regime, or between 100 W/mm 2 and 1000 W/mm 2 operating in pulsed regime; in said irradiating step, said bead being outside said impact area; - a step of transmitting, via conduction, said thermal energy from said impact area to said bead; - a step of melting said filler material, and in such melting step said thermal energy, transmitted via conduction to said bead, at least partially melts the filler material of said bead, such melted filler material penetrating via capillarity in said junction slit.