To provide a manufacturing method for bonding a plate/pipe/strip, or the like with a casting product, in which a part of the plate/pipe/strip, or the like is exposed in a cavity of a mold and molten metal poured in the cavity of the mold is contacted to the exposed portion when casting the casting product, whereby various problems in conventional brazing, welding, or the like caused by joining components with the casting product are solved, and to provide a metallic structure fabricated thereby.

In a casting work of the casting product 2, a part of a product portion 1 being a solid metal is fixed to a mold 4 and a cavity portion 5 of a nearly closed space formed by the mold in an exposed state, and molten metal is filled in the cavity portion 5.