500*500 B125 Cast Iron Flat Grating Manhole Cover

Cast Iron Flat Grating Manhole Cover 500*500 Universal for Pipelines B125 Light Vehicle Load Ningzhen Hole-Free Ductile Iron Cover Plate

Method for Replacing Cast Iron Road Cover Plates

When a cast iron road cover plate is severely damaged and cannot be continued in use through repair, replacement is necessary. Before replacement, safety warning measures must first be implemented, such as placing clear warning signs around the work area, like warning cones and warning lights, to prevent passing vehicles and pedestrians from accidentally entering. Then, using professional tools such as cranes and crowbars, carefully remove the damaged cover plate. During the removal process, care should be taken to avoid causing secondary damage to the surrounding road structure.

After removing the old cover plate, clean and inspect the manhole opening or installation foundation to ensure its dimensions meet requirements and that it is free of debris and damage. If necessary, repair or adjust the foundation. Next, hoist the new cast iron road cover plate to the installation position and lower it slowly to ensure accurate placement. Adjust the position of the cover plate to ensure it aligns with the manhole opening or foundation edge, and use tools such as a level to check the horizontality of the cover plate. During installation, protect the surface of the cover plate to avoid damage from collisions. Finally, securely connect the cover plate to the foundation through methods such as bolting or welding to complete the replacement work. After replacement, recheck the installation of the cover plate to ensure it is firmly installed, flush with the surrounding road surface, without significant height differences, and then remove the warning signs to restore normal traffic.