Ductile manhole covers have better ductility. Its impact resistance is more than 10 times that of gray iron materials, and ductile iron manhole covers have been widely used in the key elements of main pole roads. Its compressive strength is relatively high, and it can be as high as high carbon steel. It is three times that of gray iron material, the price of iron, and the quality of steel produced.

In daily life, there are always some unconscious people stealing manhole covers on the street to sell. Classification standards for ductile iron manhole covers Since materials such as steel can be recycled and sold, and the quality of steel materials is very heavy, we all have to calculate the price according to the net weight of the recycled materials Therefore, the first work to be done for municipal manhole covers is the work of anti-theft. Looking back, everyone, if the manhole covers on the roads of our big cities are stolen, will there be big holes in the roads one by one, and it is very unsafe for passers-by to travel, and it is easy to be careless. will fall.

Ductile iron manhole covers are not invited because all the manhole covers are processed by numerical control to solve the noise caused by the rolling of the wheels. Secondly, the ductile iron manhole cover and the well ring are basically designed to wear and wear effectively, which ensures that the fast-moving vehicle does not rotate and move according to the current warning, and its service life is relatively long. Under normal circumstances, it can be used for more than 30 years. In addition, the design of this product is relatively convenient to install and open, which is conducive to the regular inspection and maintenance of underground drainage equipment. The weight is relatively light and the carrying capacity is relatively large. The wrinkles of the product are clear and excellent.

Ductile manhole covers are divided according to manhole cover materials

1. Manhole covers made of metal materials: nodular cast iron manhole covers, gray cast iron manhole covers, brass manhole covers, etc.

2. High-strength steel plate chemical fiber cement concrete manhole cover (epoxy cement composite material)

3. Reconstructed pig iron manhole covers (reconstituted epoxy resin-based composite materials)

4. Polymer-based composite material inspection manhole cover, etc.

Ductile Manhole Cover Bearing Capacity Zoning

1. Super heavy manhole cover: urban road traffic travel and super heavy motor vehicle driving application

2. Light manhole covers: public road traffic and light motor vehicle applications

The function of the ductile iron manhole cover is to cover the ground or the defense of the deep water well at home to prevent people or objects from falling. It is generally divided into ring and square. In the traffic law enforcement level of the urban area, the ring is generally used. Because the ring-shaped ductile iron manhole cover is not easy to skew, it can better protect the safety of passers-by and vehicles.