
C250 heavy duty ductile cast iron manhole cover frame round shape

Manhole covers are manufactured for road construction, natural gas, water supply and drainage, telecommunications. Manhole covers and gratings should be smooth, no blisters, holes, distortion or any other defects.
500mm*500mm,600mm*600mm,700mm*700mm,800mm*800mm, 850mm*850mmand so on.Many size can be choose,or according to customer's drawing or requirements.

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