Ductile manhole cover is a kind of ductile iron product. Nodular graphite is obtained by spheroidization and inoculation treatment, which effectively improves the mechanical properties of cast iron, especially the plasticity and toughness, so as to obtain higher strength than carbon steel.

The main application areas of ductile manhole covers: municipal roads, highways, communications, electricity, tap water, residential areas, schools and other parks.

Chaotong manhole cover ductile cover has shockproof function. By setting it at the stop of the well ring, it can play a buffering role and reduce vibration.

Ductile manhole covers have the function of reducing noise. The occlusal surface between the manhole cover and the well ring directly uses a T-shaped rubber strip to reduce noise.

Ductile manhole cover has anti-theft function. The outer ring of the manhole cover is connected with the manhole cover through the fixed shaft of the well seat, which can play the role of anti-theft.

Ductile manhole cover has anti-skid function. There are raised patterns on the surface of the manhole cover, which can play a good anti-slip effect. The nodular manhole cover has an anti-displacement function. Four anchor bolt holes are reserved in the well circle to avoid displacement due to external force.

Ductile manhole cover has anti-breakage function and so on. Ductile manhole cover can bear 21t pressure. Safe for vehicles and pedestrians.