Our company produces the ductile iron manhole cover, the flake graphite in the cast iron after adding the metal magnesium greatly improves the tensile strength of the metal, the seismic resistance and the elongation rate, the excellent weight strength ratio, so that the transportation cost is reduced and the handling is more convenient.

      Our company produces all kinds of manhole covers: single circlip manhole cover, sheet lock manhole cover, latch lock manhole cover, no lock manhole cover, anti-settling manhole cover, with ears, double layer manhole cover, square manhole cover, groove cover plate, all kinds of grate and so on.

      Manhole cover is anti-ring, anti-skid, anti-theft, anti-fall, anti-displacement, easy to open, use non-toxic water-soluble black paint, cover surface can cast cross pattern, argyle pattern, manhole cover is widely used in municipal, water conservancy, parks, squares, communities, roads, green areas, etc