The pipes made by casting molten iron above No. 18 and adding a nodularizing agent through high-speed centrifugal casting of a centrifugal ductile iron machine are called ductile iron pipes, referred to as ball pipes, ductile iron pipes, and ductile iron pipes.
Features
It has the essence of iron, the performance of steel, excellent anti-corrosion performance, good ductility, easy installation, and is mainly used for water supply and gas transmission in municipal and industrial and mining enterprises. It is the first choice for water supply pipes with high cost performance. Compared with PE pipes, ductile ink tubes are simpler and faster to install than PE pipes in terms of installation time, and the internal and external bearing pressure is better after installation; from the perspective of airtightness and corrosion resistance, ductile ink pipes are better airtight after installation, and also The anti-corrosion performance can be improved through a variety of anti-corrosion methods; from the perspective of hydraulic performance, the specification of the ductile ink tube generally refers to the inner diameter, and the specification of the PE pipe generally refers to the outer diameter, because under the same specification conditions, the ductile ink tube can achieve greater runoff; from In terms of comprehensive installation and maintenance costs, the ductile ink tube has a more superior cost performance.
Advantage
In the medium and low pressure pipe network, the ductile iron pipe has the characteristics of safe and reliable operation, low damage rate, convenient and fast construction and maintenance, and excellent anti-corrosion performance.
Prospect
My country's ductile iron pipe industry started in the early 1990s and developed rapidly with the strong support of the China Urban Water Supply Association. After nearly 20 years of practical use, its safety and practicability have been generally recognized by the water supply industry. In 2008, the domestic The annual output has reached 2.2 million tons, 11 times that of 1990. Since my country is a country lacking in water resources, there are more than 600 water-deficient cities, and more than 200 severely water-deficient cities. The cause of water supply and water conservation is in the ascendant, and ductile iron pipes have broad development prospects.
