Rigang Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in the form of spheroids. Generally, the size of graphite is grade 6-7. The quality requires that the spheroidization level of the cast pipe be controlled to grade 1-3 (spheroidization rate ≥80%). Therefore, the mechanical properties of the material itself The performance has been better improved, with the essence of iron and the performance of steel. The metallographic structure of the ductile iron pipe after annealing is ferrite plus a small amount of pearlite, and has good mechanical properties.

Rigang Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in the form of spheroids. Generally, the size of graphite is grade 6-7. The quality requires that the spheroidization level of the cast pipe be controlled to grade 1-3 (spheroidization rate ≥80%). Therefore, the mechanical properties of the material itself The performance has been better improved, with the essence of iron and the performance of steel. The metallographic structure of the ductile iron pipe after annealing is ferrite plus a small amount of pearlite, and has good mechanical properties.

Rigang Ductile iron pipe is a type of cast iron, an alloy of iron, carbon and silicon. Graphite in ductile iron exists in the form of spheroids. Generally, the size of graphite is grade 6-7. The quality requires that the spheroidization level of the cast pipe be controlled to grade 1-3 (spheroidization rate ≥80%). Therefore, the mechanical properties of the material itself The performance has been better improved, with the essence of iron and the performance of steel. The metallographic structure of the ductile iron pipe after annealing is ferrite plus a small amount of pearlite, and has good mechanical properties.