To maintain the aesthetic appearance of manhole covers and ensure clear surface patterns and markings, thin iron sheets are used to cover the manhole tops or waste engine oil is applied for coating, in order to prevent asphalt oil from directly splashing onto the covers during asphalt road construction.

During construction, cover the manhole covers with plastic film to prevent cement slurry from seeping in and damaging the surface patterns and handwriting. Additionally, clean the manhole cover surface with water at the end of the day's work.

Once the concrete manhole covers are cast or the asphalt is laid, promptly flip and clean them to prevent mortar or asphalt from seeping through the cover and seat, to avoid affecting future openings. In actual construction, when using brick blocks, ensure the internal diameter or length × width (as per the actual project), and also refer to the relevant specifications for compliance.

When installing the well base, a 20cm thick ring beam must be poured with C25 concrete on the brick masonry of the well body. It is essential to maintain the four corners of the well base, ensure the overall flatness of the well cover, and there should be no loose parts. Additionally, a concrete maintenance ring not less than 40cm wide must be poured and reinforced with steel bars, with a maintenance period of more than 10 days.

When installing covers on asphalt road surfaces, be sure to prevent mechanical direct compaction of the well head. During the entire road pouring process, leave a hole slightly larger than the well head on the road surface. After the asphalt is laid and settled (for full concrete surfaces, lay and compact two layers before laying the asphalt), use the service life as the standard.

Manhole covers are a basic piece of equipment found in cities everywhere, and during this period, stainless steel manhole covers have also become one of the most frequently chosen raw materials by customers. What needs to be discussed is the factors to consider when planning for stainless steel manhole covers, as well as the requirements they place on the manhole structure. The planning requirements for stainless steel manhole covers are not just engineering-related.

In addition, requirements such as aesthetics and durability must be met. The structural design of stainless steel manhole covers not only needs to comply with the requirements of the machinery and equipment itself and the mechanical processing technology, but also the casting process. It should facilitate the creation of models, cores, and molds. The exterior of the stainless steel manhole cover should strive for simplicity, ease of demolding, and the casting parting surface should be as flat as possible, with a minimal number of pieces.

During casting, it is crucial to minimize or eliminate the need for cores, and the selection of cores should facilitate support. The fixation of sand and exhaust ventilation should be in line with the process holes when necessary. The front panel, reinforced ribs, and other structures should have a certain structural slope in the demolding direction.