Ductile iron is a high-performance cast iron material, which features excellent mechanical properties, wear resistance and corrosion resistance. By adding elements such as plutonium and calcium to cast iron and conducting spheroidizing treatment during the casting process, the carbon in the cast iron exists in spherical form, thereby enhancing its strength and toughness.

Ductile iron castings are widely used in industries such as automobiles, machinery, construction and shipping, and are often used to manufacture mechanical parts, automotive parts and steel equipment parts, etc. This kind of material has received extensive attention and application in recent years and has become an advanced material.

In addition, cast steel is also an important casting alloy, which is mainly used for pouring castings. Cast steel can be classified into three types: cast carbon steel, cast low alloy steel and cast special steel, and is widely used in mechanical manufacturing, petrochemicals and other fields.