PURPOSE: To cast the titled casting to be suitable as raw material of sleeve, etc., by using a core mold forcedly cooling sand mold layer arranged at outer circumference of a cylindrical core metal at the time of casting the cylindrical casting by using the cylindrical core mold of the sand mold.

CONSTITUTION: The mold 1 is formed by cylindrical metallic mold 2, lower and upper molds 3, 5 composing of the bottom surface and upper surface thereof and the core mold 4 standing on the lower mold 3. In the core mold 4, the sand mold layer 7 is arranged around the cylindrical core metal 6 opening to the air at the upper part thereof and coolant supplying tube 8 made of copper pipe, etc., is buried near the outer circumferential surface. Molten metal is poured in the metallic mold 2 by using this mold 1, and the molten metal adjoining to the core mold 4 is cooled by air-cooling with hollow part 6a of the core metal 6 and by forcedly cooling with the coolant supplying tube 8. By this method, even if wall of the cylindrical casting is thick, the inner circumferential surface can be made to the material having the prescribed strength and ductility.