40 CUSTOM MANUFACTURING OF METAL PRODUCTS SUCH AS CASTINGS, TOGETHER WITH HEAT TREATING, MACHINING, TURNING, BORING, GRINDING, HONING, DRILLING AND TAPPING OF SUCH PRODUCTS; CUSTOM MANUFACTURING OF CENTRIFUGAL CASTINGS FOR USE IN VARIOUS INDUSTRIES, TOGETHER WITH HEAT TREATING, MACHINING, TURNING, BORING, GRINDING, HONING, DRILLING AND TAPPING OF SUCH PRODUCTS; FOR CUSTOM MANUFACTURING OF CENTRIFUGAL CASTINGS FOR USE IN VARIOUS INDUSTRIES, TOGETHER WITH HEAT TREATING, MACHINING, TURNING, BORING, GRINDING, HONING, DRILLING, AND TAPPING OF SUCH CASTINGS