The manhole cover is marked with EN 124 B 125. What's the carrying capacity?

The total weight of a set of manhole covers is about 40kg. Generally, it is used in residential areas or automobile lanes, and can withstand the passage of cars within 15 tons, but it cannot be used in fast lanes or heavy lanes.

The interior of the composite manhole cover is reinforced with reticulated steel bars, and the key stress parts are particularly strengthened. In the case of inevitable external impact, the pressure can be quickly dispersed to ensure the safety of people and vehicles.

There is no metal, and the steel skeleton of the stone plastic manhole cover and the concrete manhole cover is less than110 of the total weight of the manhole cover. There is not much stealing value. Moreover, due to the extremely high strength of the manhole cover, it is extremely difficult to take out this small steel bar from the manhole cover.

The composite manhole cover adopts high temperature and high pressure one-step molding technology, which has the advantages of high polymerization degree, high density, good impact resistance and tensile strength, wear resistance, corrosion resistance, no rust, no pollution, no maintenance and so on.

Ductile iron manhole cover is a kind of ductile iron products. Spherical graphite is obtained by spheroidizing and inoculation of nodular cast iron, which effectively improves the mechanical properties of cast iron, especially plasticity and toughness, thus obtaining higher strength than carbon steel.

Ductile iron is a kind of high strength cast iron material developed in 1950s, and its comprehensive performance is close to that of steel. Based on its excellent performance, it has been successfully used to cast some parts with complex stress and high requirements for strength, toughness and wear resistance.

Ductile iron has rapidly developed into a widely used cast iron material second only to gray cast iron. The so-called "replacing steel with iron" mainly refers to ductile iron.