主要用于市政施工中窨井盖的设置，开启和维系工作。窨井盖是铸件，厚重且安装封闭，由于冰霜和道路损坏需要更换和修理时，需要耗费很长的时间并且耗费很大的人力和物力来将其松动撬开，这给市政施工工作和交通管制增加了昂贵的成本。井盖铣刨器的诞生和运用使得更换和修理窨井盖工作变得轻松快速，节省人力物力，大大****了工作效率节省了维修和管理成本。是理想的公路维修和市政管理工具。

It i*ainly use in municipal c*truction project, used for cutting and repairin*hole cover. Until now, manhole castings that needed to be replaced or repaired due to frost damage, settleme*r the results of extreme traffic, had to be cut loose by the use of tiresome and expensive labor. It took several hours to complete one single unit. The cost of equipment, labor and traffic co*ol were extremely high. With HCN manhole cutter, the production on this type of repair work is increased significantly. Again, back injuries are reduced dramatically. It’s really an ideal tool for road maintenance and municipal c*truction project.