Ductile Iron Pipe
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Premium Quality Welded Black Iron Pipe and Tube: 3 Inch Diameter, Competitive Price
In the realm of construction, the significance of durable and reliable materials cannot be overstated. One such essential component is the black iron pipe and tube. These robust and versatile structures play a vital role in various applications in the construction industry. Whether it is for plumbing systems, gas lines, or structural supports, black iron pipes and tubes are an indispensable part of modern-day construction.
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Nodular cast iron pipe
Nodular cast iron steel pipes are essentially ductile iron pipes, which have the essence of iron and the properties of steel, hence their name. Graphite in ductile iron pipes exists in a spherical form, with a general size of 6-7 grades. In terms of quality, the spheroidization level of cast iron pipes is required to be controlled at 1-3 levels, with a spheroidization rate of ≥ 80%. Therefore, the mechanical properties of the material itself have been improved, possessing the essence of iron and the properties of steel. After annealing, the microstructure of ductile iron pipes is ferrite with a small amount of pearlite, which has good mechanical properties, hence it is also called cast iron steel pipes.