Heavy manhole covers are generally used in places with heavy loads, such as airports, highways, docks, second ring roads and urban expressways. This situation has a common feature, that is, it will bear high load and heavy pressure after passing. The application scope of ordinary manhole covers is one of these areas, such as service roads, Little Square, residential areas, bicycle lanes, township third-class highways and so on.

2. The materials are different

Different materials mean that the material of heavy nodular cast iron manhole cover must be cast iron, because only cast iron can achieve the required strength, while ordinary manhole cover materials can use cast iron or other materials, such as composite materials, resin materials, polymer materials and so on.

3. The product details are different.

Heavy nodular cast iron manhole covers are much thicker than ordinary manhole covers, which are much lighter and thinner.

Landun Road Facilities Engineering Co., Ltd. is a large enterprise integrating scientific research, production and sales, specializing in the production of various manhole covers. The main products are ductile manhole covers, composite resin manhole covers, steel cement manhole covers, galvanized steel grids, alloy polymer manhole covers, ductile iron manhole covers, cast iron manhole covers, flower fences and cast iron pipes. The product has the characteristics of complete specifications, beautiful style, high quality, corrosion resistance, high strength, compression resistance, strong impact resistance and bearing capacity, and long service life. Products are widely used in highways, urban roads, garden squares, residential quarters and so on. , and suitable for designated products in large and medium-sized cities.