Ductile iron manhole cover-high quality and low price-available from stock

The installation of ductile iron manhole covers
In order to keep the appearance of the cover beautiful and the surface patterns and writing clear, during asphalt pavement construction, a thin iron sheet should be covered on the manhole cover or the cover surface should be brushed with waste engine oil to prevent asphalt oil from spraying on the manhole cover. When constructing cement pavement, use plastic film to cover the manhole cover to prevent the cement mortar from contaminating the surface of the manhole cover and damaging the surface pattern writing. You can also clean the surface of the manhole cover with water when the construction is completed that day. When installing cast iron manhole covers on asphalt pavement, care must be taken to avoid direct rolling of the well seat by construction machinery. When the road is cast as a whole, a hole slightly larger than the well seat should be reserved in the road surface and placed after the asphalt is paved. The all-concrete pavement should be installed after the second stone is laid and compacted to ensure the quality of the manhole cover placement and extend the service life.