Regardless of the product being manufactured, certain technologies are required to support the process. When producing ductile iron manhole covers and gratings, an understanding of the machining technology is essential. The primary material for manufacturing these ductile iron manhole covers and gratings is, of course, ductile iron. The casting surface of the ductile iron manhole covers and gratings should be smooth and clean, without any patterns or markings, and free of cracks to ensure they do not affect the inspection and performance of the covers and gratings. The ductile iron manhole covers and gratings feature a socket-and-splice structure, allowing for precise fit between the lower part of the well frame and the interior of the well body. With a spring-loaded locking mechanism, it prevents accidental opening and ensures safety, reducing vibrations caused by impacts and significantly minimizing the risk of cracking around the ductile iron manhole covers and gratings. During production, the gap between the ductile iron manhole covers and the well seat must comply with relevant regulations. Some data allow for minimal deviations, and the width of the support surface of the well seat must meet certain requirements; for heavy-duty inspection wells, this width cannot be less than 40 millimeters, and the support surface width of the well seat should be between 6 millimeters. It is important to note that the production of ductile iron manhole covers and gratings is not arbitrary but follows specific requirements and standards, otherwise, various issues may arise during use.