'Spheroid Graphite' or 'Ductile Iron' is a unique form of Iron. which prior to the metal casting process receives crucial mineral additives to produce an exceptionally strong resistance and durable metal, the molecular structure of 'Ductile Iron' gives rise to excellent additional strength and shock load resistance, within structure carbon steel, without steel inheriting corrosion.
 
High Strength – Almost three times that of grey cast iron resulting in more Life & Durability.
Good Toughness – Almost ten times that of grey cast iron.
Higher Load Bearing Capacity – Almost 30% more than grey cast iron.