Manhole Covers

Ductile iron manhole cover is a type of ductile iron product. Ductile iron obtains spherical graphite through spheroidization and inoculation treatment, effectively improving the mechanical properties of cast iron, especially improving plasticity and toughness, resulting in higher strength than carbon steel. Ductile iron is a high-strength cast iron material developed in the 1950s, with comprehensive properties similar to steel. Based on its excellent performance, it has been successfully used to cast some parts with complex stress, high requirements for strength, toughness, and wear resistance. Ductile iron has rapidly developed into a widely used cast iron material, second only to gray iron. The so-called "replacing steel with iron" mainly refers to ductile iron.

Gully Grates are used to cover roads or deep wells in homes to prevent people or objects from falling. According to material, it can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, resin manhole covers, etc.

Ductile iron manhole covers are a measure used to cover the wellhead, usually used on roads, parking lots or other public areas. Ductile iron manhole cover is made of ductile iron material, which is characterized by strong and durable, excellent compression performance, anti-slip, anti-theft, anti-noise, fire and so on.
Nodular cast iron is a kind of material composed of cast iron and alloying elements such as nickel and palladium. After spheroidization, it forms a kind of cast iron with high strength and corrosion resistance. Ductile iron manhole cover has high strength and durability, can withstand a lot of pressure and weight, to prevent the material in the well overflow or cause ground collapse.