At present, many cast iron well covers used on the road are ductile iron well covers, and the ductile iron well cover has good toughness, which is 10 times higher than gray iron material, so it is widely used as one of the choices of well cover medium. In terms of price, it is also the cost, the price of iron is used, and the quality of steel is earlier than that of steel, which is the superiority of ductile iron well cover.

Divided by well cover ownership: well covers with property rights owned by various pipeline enterprises; Well covers with property rights owned by users.

Nodular well covers are divided into metal well covers: nodular cast iron well covers, gray cast iron well covers, bronze well covers and other high-strength steel fiber cement concrete well covers (cement-based composites), recycled cast iron well covers (recycled resin-based composites), polymer based composite inspection well covers, etc.

According to the distribution and application scope of cast iron well covers, underground pipeline well covers in factories, enterprises, units, residential areas and green belts are divided; Underground pipeline well cover of urban public road traffic facilities? By pipeline type: rainwater, sewage, water supply, gas, hot gas, power supply, communication, cable TV, traffic signal line, etc. most of this type of well covers are underground pipelines set in road works.

Bearing capacity division of nodular well cover: heavy well cover: municipal road traffic and heavy vehicle traffic. Light well cover: used for public road traffic and light vehicles.

The bearing capacity of nodular well covers is divided into four levels: A, B, C and D. cast iron well covers are used for special roads and sites such as airports. Grade steel fiber concrete manhole covers are used for urban roads, highways and parking lots where motor vehicles are driving and parked, grade steel fiber concrete manhole covers are used for slow lanes, passages and sidewalks in residential areas, and grade steel fiber concrete manhole covers are used for green belts and alleys and places where motor vehicles cannot drive and park.

In fact, cast iron manhole covers can be divided into round and square ones in use, but most roads adopt round manhole covers. This is because the circular manhole covers have good sealing performance, are not easy to collapse and have good bearing capacity. However, according to your choice of different construction sites, you can choose square cast iron manhole covers. In terms of shape selection, they also adapt to local conditions