Ductile iron pipe

Ductile iron pipe refers to the use of more than 18 casting iron by adding a spheroidal agent, through the centrifugal ductile iron machine high-speed centrifugal casting into the pipe, referred to as ductile iron pipe, ductile iron pipe and ductile casting pipe and so on. Mainly used for water transportation, is the ideal choice of materials for water pipelines.
The essence of cast iron steel pipe is ductile iron pipe, because ductile iron pipe has the nature of iron, steel performance, so there is this name. Ductile iron pipe in graphite is in spherical form, the general size of graphite is 6-7 levels. Quality requirements of cast iron pipe spheroidization level control for 1-3 levels, spheroidization rate ≥ 80%, so the material itself has improved the mechanical properties, with the essence of iron, steel performance. After annealing ductile iron pipe, its metallurgical organization is ferrite plus a small amount of pearlite, good mechanical properties, so it is also called cast iron steel pipe.

Characteristics:
High strength and good toughness: ductile iron pipe has excellent mechanical properties, can withstand high pressure and impact, while maintaining sufficient toughness to adapt to the uneven settlement of the foundation. Its tensile strength is more than 420 MPa and the pressure value can be more than 4 MPa.
Excellent corrosion resistance: Ductile iron pipe has excellent corrosion resistance, the inner wall is lined with cement mortar, and the outer surface is treated with zinc spraying and spraying asphalt paint, which can effectively resist the corrosive substances in the sewage and prolong the service life of the pipe.
Good sealing performance: Ductile iron pipe adopts flexible interface and rubber ring sealing to ensure the sealing of pipe connection, reduce leakage and protect the environment.
Convenience of construction: Ductile iron pipe is easy and quick to install, which reduces the construction time and cost, and at the same time, it can quickly adapt to various construction conditions.
Strong adaptability: Ductile iron pipe has high bearing capacity and a certain elongation, and adopts flexible interfaces, which can resist earthquakes and foundation settlement.
Long service life: due to strong corrosion resistance, the service life of ductile iron pipe can be more than 100 years.