In order to maintain the beautiful appearance cover, surface patterns and handwriting clear, in asphalt pavement construction application of thin metal or wood covered on the manhole cover, black covers also available waste oil and other brush cover, and prevent the asphalt spraying on the well cover.

Covers the brick masonry should be in accordance with design institute design covers the size determine the diameter or said length x width, radius, can also be appropriate reference standards, and in the periphery of the manhole cover casting wide 40cm concrete protective ring, maintenance period to more than 10 days.

When installing the cover on the asphalt pavement, be sure to pay attention to avoid the construction machinery to direct rolling of the well seat, in the overall pavement casting should be on the road reserved hole slightly larger than a well seat, placed in the asphalt after.

Concrete is a well after casting or laying asphalt, should be timely to open the covers cleaning, avoid asphalt mortar or will check manhole cover seat and poured into a whole, so as not to affect the future open

setup script

In the installation of composite covers should be in accordance with the following four steps:

Before installation, the manhole cover should be neat solid foundation, according to the cover's size determine diameter and length and width.

In cement concrete pavement installed composite manhole cover, should pay attention to the wellhead of masonry to use concrete pouring, but also in the periphery concrete protective ring, maintenance about 10 days.

Install composite covers construction machinery to avoid direct rolling a manhole cover and a well seat, so as to avoid damage in asphalt pavement.

In order to keep covers beautiful and handwriting, pattern clear, do not contaminate the manhole cover to be noted in the pavement pouring asphalt and cement.