Abstract: A heat exchanger for a boiler, comprising, within a monolithic structure, at least one pair of mutually opposite manifolds connected by perforated pins inserted within a portion of space which is delimited by the structure and is designed to convey the products of combustion, the manifolds being adapted to provide the circulation of the fluid to be heated between an inlet connector and an outlet connector.

Abstract: A method for manufacturing a heat exchanger with die-cast elements, comprising a die-casting step for die-casting at least one element of a heat exchanger by means of at least one die, further comprising a positioning step for positioning at least one contoured duct inside the die, performed prior to the die-casting step.

Abstract: A method for anodizing metallic alloys, particularly for heat exchangers made of aluminum alloys and the like for condensing boilers, comprising a step of immersing at least one heat exchanger or the like made of a metallic alloy in a bath of an electrolytic solution functionally associated with a source of electric current through the heat exchanger, the anodizing method then providing for a step of anodizing the heat exchanger immersed in the bath, so as to anodize at least the outer surfaces of the heat exchanger, the method comprising a step of pumping the electrolytic solution into the heat exchanger immersed in the bath for the forced circulation of the electrolytic solution in the internal passage channels of the heat exchanger so as to anodize the inner surfaces of the heat exchanger.

Abstract: A heat exchanger for a boiler, comprising, within a monolithic structure, at least one pair of mutually opposite manifolds connected by perforated pins inserted within a portion of space which is delimited by the structure and is designed to convey the products of combustion, the manifolds being adapted to provide the circulation of the fluid to be heated between an inlet connector and an outlet connector.