Ductile iron is a high-performance cast iron obtained by spheroidizing white cast iron. Magnesium is added to ductile iron for higher strength and tenacity in spherical/spherical form.    

TOP Ductile Iron Gate Valves, Globe Valves, Check Valves. In threaded and flange ends (10K/16K) available - Ductile iron has better ductility and toughness than regular cast iron.  It has the advantages of wear resistance, shock absorption, good processing performance, and low cost. It has been widely used to replace malleable iron, cast steel, and forged steel.