moisture proofing nodular cast iron manhole cover

moisture proofing nodular cast iron manhole cover

Ductile iron covers are a kind of ductile iron products. Ductile iron is obtained by ballning and inoculation to obtain spherical graphite, which effectively improves the mechanical properties of cast iron, especially improves the plasticity and toughness, so as to obtain higher strength than carbon steel. Ductile iron is a kind of high strength cast iron material developed in the 1950s, and its comprehensive performance is close to that of steel. It is based on its excellent performance and has been successfully used for casting some complicated, complex, Requires higher parts. Ductile iron has rapidly developed into gray cast iron, the application of a wide range of cast iron materials.

The main application areas: municipal roads, highways, communications, electricity, water, residential, schools and other parks