Ductile iron pipe refers to the pipe that is cast by high-speed centrifugal casting in a centrifugal ductile iron machine after adding nodularizing agent from casting molten iron of No. 18 or above. It is mainly used for the transportation of tap water, and it is an ideal material for tap water pipelines.
The essence of cast iron steel pipe is ductile iron pipe, because ductile iron pipe has the essence of iron and the performance of steel, so it is called this. Graphite in ductile iron pipe exists in spherical form, and the size of graphite is generally 6-7. In terms of quality, the spheroidization grade of cast iron pipes is required to be controlled at 1-3 grades, and the spheroidization rate is ≥80%. Therefore, the mechanical properties of the material itself have been better improved, and it has the essence of iron and the performance of steel. After annealing, the ductile iron pipe has a metallographic structure of ferrite and a small amount of pearlite, and has good mechanical properties, so it is also called cast iron steel pipe.
Features: It has the essence of iron, the performance of steel, excellent anti-corrosion performance, good ductility and easy installation. It is mainly used for water supply and gas transmission in municipal industrial and mining enterprises.
