[Problem] To provide a cast-iron casting, a method for manufacturing a cast-iron casting, and equipment for manufacturing a cast-iron casting that can implement plating treatment or enameling treatment without defects on the surface of the cast-iron casting regardless of the specifications thereof and without inviting a decrease in productivity and an increase in costs. [Solution] In a method for manufacturing a cast-iron casting, a mold is made by applying a vacuum to mold sand, and a melt is poured into the mold. A vacuum is applied to the inside of the mold until the temperature of a casting formed by this melt falls to or below the A1 transformation temperature. Equipment for manufacturing a cast-iron casting is provided with: at least one mold; a frame feed device that moves the mold; at least one fixed suction device that applies a vacuum to the inside of the mold when the mold is stopped; at least one movable suction device that moves while applying a vacuum to the inside of the mold instead of the fix
