Tel:13408516245
Address:No. 28, Zone B, Dayang Zhijia, Chongzhou Economic Development Zone, Chongqing Street, Chongzhou City
Chengdu ductile iron manhole covers are made of ductile iron. The quality of such covers is related to the spheroidization rate. The common coating for castings is anti-rust asphalt paint, and the surface of ductile iron manhole covers is also treated with sprayed anti-rust asphalt paint. One advantage is that due to the high strength and good toughness of ductile iron, they are about 30% lighter than gray cast iron covers.
The characteristics of ductile iron manhole covers: good toughness, strong corrosion resistance, good plasticity and high strength. Due to the spherical graphite microstructure, ductile iron is superior to cast steel in vibration damping, which is more conducive to reducing stress. An important reason for choosing ductile iron is that it costs less than cast steel, making it more popular with higher casting efficiency and reduced machining cost.
The strength of ductile iron is comparable to cast steel. Ductile iron has a higher yield strength (40k), while cast steel has only 36k. In most municipal applications, ductile iron has better corrosion resistance and oxidation resistance than cast steel.
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Hotline: 13408516245
Address: No. 28, Zone B, Dayang Zhijia, Chongzhou Economic Development Zone, Chongqing Street, Chongzhou City
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