What are the requirements for stainless steel manhole covers during use?

1. In terms of stainless steel manhole cover symbols: If the cover is for waste water pipes, it should have a "Waste" symbol on the surface. If it's for rainwater pipes, a "Rain" symbol should be present. The distinction between the two should be clear and easily identifiable for inspection.

In terms of inner and outer cover settings: In addition to special requirements on the surface of the stainless steel manhole covers, for those with protective cover seats on the sewage inspection wells, the stainless steel covers should also be equipped with inner covers.

3. Internal Manhole Cover Design: For stainless steel manhole covers, the selection should be based on the medium of the drainage pipeline, as well as factors such as the diameter of the well shaft and the material of the pipe.

4. In terms of load-bearing capacity: Determine the load-bearing capacity of the stainless steel material manhole covers used, request the corporate standards of the composite material manhole cover manufacturers, and inspect the load-bearing capacity of the composite material manhole covers as specified in the corporate standards.

Manhole covers play a crucial role in maintaining infrastructure. It is essential to be cautious when making purchases and opt for reputable large manufacturers. Buying low-quality stainless steel manhole covers from small workshops due to low prices can result in a double loss of both economic and personal well-being, which is not worth the cost.