Square frame with round cover

The round cast iron manhole cover is advantageous because its shape prevents it from falling into the opening regardless of the direction, ensuring safety. Additionally, the cast iron material is strong and durable, capable of withstanding heavy loads, making it suitable for various road and traffic environments. It also has good corrosion resistance, ideal for long-term exposure to harsh outdoor weather conditions. The round design allows for easy rolling, facilitating installation and maintenance, and is widely used in municipal roads, parking lots, and industrial areas.

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