I don't know if you have noticed that the covers on the road have changed slowly. Ductile iron covers are becoming more and more common. Why do we all use ductile iron covers now? What are the advantages of this kind of cover? Next Shandong Ductile Iron Well Cover Manufacturer's small edition will give you a detailed introduction!
Ductile cast iron well cover is popular because it has a very important advantage, that is, because of its high strength and good toughness, the ductile cast iron well cover is about 30% lighter than the same type of grey cast iron well cover.
In addition, the following characteristics of nodular cast iron well cover are also important reasons for his high praise:
Good toughness。 The impact value of medium carbon steel is more than 10 times that of gray iron。
2。 Strong corrosion resistance。 In the spray corrosion test, the corrosion amount in 90 days is only 1/40 of steel pipe and 1/10 of gray iron pipe。 The service life is twice as long as that of gray iron pipe and five times as long as that of ordinary steel pipe。
3. Good plasticity. The elongation (> 7/100) is similar to that of high carbon steel, while the elongation of gray iron is zero.
4. Noise-free: Because of the patented structure to prevent noise, the cover of the well is silent when passing the car and will not disturb the people any more.
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