Round ductile cast iron water supply manhole cover

Round ductile cast iron water supply manhole cover, this manhole cover is used in Yinchuan city, China water supply pipe well. The pattern on the manhole cover is beautifully designed and printed with the name of the city "Yinchuan". This ductile cast iron manhole cover is beautiful, plays a role in beautifying the city, and deepens people's impression of Yinchuan, and plays a role in promoting the city. The ductile cast iron manhole cover is made of ball mill cast iron material, which has high compressive, bending and impact strength and toughness. After long-term use, the product will not be crushed and damaged, which can completely eliminate the occurrence of "urban black hole" accidents.