Round ductile cast iron manhole cover

Round ductile cast iron rain manhole cover, the use of ductile cast iron material, with good impact resistance, not easy to crush or damage, acid and alkali resistance, corrosion resistance and other characteristics. The design of this round ductile cast iron manhole cover is hollow in the middle, which helps to drain water, and the drainage speed makes the road not easy to collect water and reduce the probability of flooding. It is surrounded by cross lines, increase friction, play a non-slip, protect the safety of passing pedestrians and vehicles. Ductile cast iron manhole covers play a very important role in municipal construction, and will continue to do so in the future.