There is a big difference between heavy ductile iron manhole cover and ordinary cast iron well cover.

1. The application scope is different from the occasion. Heavy manhole covers commonly used in heavy load situation, such as airports, highways, docks, the second ring road, such as urban expressway, the occasion have a common characteristic is after will be affected by the high load and stress. And the general well cover application scope is in this scope, such as the road, small square, the neighborhood, the bicycle road, the township level three roads.

2. The materials are different. Is not the same as the material is, heavy ductile material must be of cast iron manhole covers, because only cast iron material can meet the requirements of strength, and ordinary material can be applied to cast iron manhole cover, also can be applied to other materials such as composite materials, resin materials, polymer materials, etc.

3. The details of the product are different. Heavy ductile iron well cover is much thicker than a normal manhole cover, while the normal cap is much lighter and thinner.