What are the precautions for cleaning the wellhead when installing Ductile iron manhole square covers?

When installing Ductile iron manhole square covers, cleaning the wellhead is a very important step as it is directly related to the stability and service life of the manhole cover. The following are some precautions when cleaning the wellhead:

1. Clean up debris and dirt in the wellhead.

Ensure that the inside of the wellhead is clean and free of dust, debris or other obstacles. This helps the manhole cover to be placed on the wellhead smoothly and ensures a proper fit with the wellhead.

2. Check the wellhead size.

When cleaning the wellhead, check whether the size of the wellhead is exactly the same as the inner diameter of the manhole cover to ensure that the manhole cover can be installed correctly and be flush with the road surface.

3. Check the condition at the bottom of the well.

When cleaning the wellhead, check whether the bottom of the well is flat. If there are obvious damages or settlements, mortar should be used for repair to provide a stable support surface.

4. Avoid pollution.

During the cleaning process, measures should be taken to avoid polluting the surface of the manhole cover to prevent affecting the appearance and rust prevention performance of the manhole cover.

5. Ensure safety.

When cleaning the wellhead, ensure the safety of construction personnel, use appropriate personal protective equipment and set up safety warning signs when necessary.

Following the above precautions can ensure the quality of wellhead cleaning work and lay a good foundation for installing Ductile iron manhole square covers.