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Sewage manhole cover is an light duty square frame and round manhole cover.It is have protuberant spanish water character. And have kinds of pattern design.The manhole cover have corresponding groove,and the frame has the corresponding ring,you can fix the cover and framet through them. Typical Applications--- sewer manhole cover water manhole cover drain manhole cover drainage manhole cover sanitary manhole cover rain manhole cover
Key words : manhole cover gully grate round manhole cover square manhole cover Tree grates Water meter box Cast iron pig flooring Balance weight
