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ISO 7186:2011 specifies the requirements and test methods applicable to ductile iron pipes . Ductile Iron Spun Pipes | Ductile Iron Flanged Pipe | Ductile Iron Double Flanged pipe

Ductile Iron (also known as Spheroidal graphite iron or Nodular Cast Iron) was invented in 1949. Ductile Iron retains the corrosion resistance of cast iron but has more than double the tensile strength [Cast Iron- 180 MPa (min), Ductile Iron – 420 MPa (min)]. The essential differences between Ductile and Cast Iron lies in the shape of the graphite in the microstructure of the metal

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