Ductile iron pipes are pipes manufactured by casting molten iron, numbered 18 or higher, after adding nodularizing agents, and then cast at high speed through a centrifugal ductile iron casting machine. They are also known as spheroidal iron pipes, nodular cast iron pipes, and ductile cast iron pipes. They are mainly used for water supply systems and are the ideal material choice for water pipelines.

Ductile iron pipes, commonly known as centrifugal ductile iron pipes, possess the essence of iron and the properties of steel. They offer excellent corrosion resistance, good ductility, superior sealing performance, easy installation, and are primarily used for municipal and industrial water supply, gas, and oil transmission. They are a cost-effective choice for water supply piping materials.
Ductile iron pipe features: It retains the essence of iron and the properties of steel, boasts excellent corrosion resistance and good ductility, is easy to install, and is mainly used for water supply and gas transmission in municipal and industrial enterprises.

The production process of ductile iron pipes involves adding magnesium, calcium, and other alkaline earth metals or rare metals to the raw materials of ordinary cast iron pipes for casting. The casting techniques for ductile iron pipes include continuous casting, hot mold casting, and water-cooled centrifugal casting, with the water-cooled method being the current technology. Different casting processes yield varying technical properties of ductile iron pipes. Compared to ordinary cast iron pipes, they maintain the corrosion resistance of the latter while offering higher strength, excellent toughness, thin walls, light weight, good impact resistance, high flexibility, and ease of installation.