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Lebin Lili @xinghuacasting bir ses eklendi in Other
2024-10-29 05:47:25 ·

What is a manhole cover?

A manhole cover is a durable cover that protects access points to underground utility systems, such as sewers, electrical conduits, and stormwater drains. Found in urban areas, roadways, sidewalks, and industrial sites, these covers are essential for maintenance, inspection, and safety. Typically made from materials like cast iron, steel, or composite substances, manhole covers not only provide...

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