Ductile iron has very high tensile strength due to its spheroidal graphite micro-structure. Therefore, it can handle much higher pressure and stress compared to cast iron. Ductile Iron Pipes also ensure better beam strength, greater resistance to impact and traffic load.
Ductile iron has excellent anti-corrosive properties. The table below clearly shows that corrosion is much less in case of Ductile Iron Pipes as compared to other pipes.
|Pipe Material||Corroded Volume (gr/ cm2)|
|After 45 days||After 90 days|
|Ductile Iron Pipe (DI)||0.006||0.009|
|Grey Cast Iron Pipe (CI)||0.006||0.0103|
|Seamless Steel Pipe (MS)||0.017||0.0273|
|Welded Steel Pipe (MS)||0.0294||0.0396|
Ductile Iron Pipes have flexible push-on joints which do not leak at high or low pressure, even when deflected. Thus, these pipes are flexible, easy and quick to join.
Ductile Iron Pipes are lined with cement mortar using large centrifugal force. The advantages of Cement Mortar Lining (CML) are the following -
Ductile Iron Pipes are extremely workable - flexible, easy and quick to install. Installation is less expensive and requires no special tool or high skilled workforce.