1, power cover anti-aging, strong corrosion resistance and long service life
2, the power weight easily cover the installation and maintenance of construction
The product uses a lower density of cast iron as raw materials, composite materials, about half the weight of cast iron and cement products, easy installation and construction and maintenance.
3, nice cover electricity
The product can be classified according to the different requirements and with colored flags.
4, good strength and power cover large spans carrying capacity
Ministry of Construction GJ/3021-93 "cast iron manhole covers" industry standards and GJ/T121-2000 "recycled resin composite manhole covers" industry standard. By enclosing the steel ribs, large-span than other classes cover the carrying capacity stronger.
The above answer is my company for the community to cover the use of electricity direction answers