square ductile iron manhole cover (also known as a square manhole cover or access cover), with the specific specifications of 300×500mm, EN124 Class B125
Material and Structure
Made of ductile iron, which offers better toughness and impact resistance compared to ordinary gray cast iron, making it less prone to fracture. It is the mainstream material used in municipal engineering.
The cross-shaped patterns on the surface are anti-slip textures, designed to increase friction and prevent pedestrians and vehicles from slipping.
· Meaning of Markings
300×500: The clear opening dimensions of the manhole cover are 300mm × 500mm (length × width).
EN124: The European standard for manhole covers, which specifies the manufacturing, testing, and usage specifications for access covers and gully tops.
B125: The load-bearing class, indicating it can withstand a maximum load of 125kN (approximately 12.5 tons). It is suitable for use in pedestrian areas, cycle tracks, and residential driveways.
· Applications
Primarily used to cover and protect access points for sewage, stormwater, telecommunications, and valve chambers in municipal roads and residential areas, while facilitating maintenance access.
The square design is commonly used in narrow roads, green belts, or space-restricted areas, as it saves more space compared to circular manhole covers.
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