LuZhongBao 24-inch (≈610 mm) ductile iron manhole cover is a heavy-duty protective product specifically designed for standard inspection manholes in urban municipal roads, residential communities, and industrial parks. Strictly compliant with GB/T 23858 national standards and EN124 European standards, it is precision-cast from QT500-7 high-strength ductile iron, offering excellent mechanical properties and durability. The standard 24-inch size perfectly fits most municipal manhole openings, effectively bear daily vehicle loads and preventing foreign object entry, ensuring the smoothness and safety of underground pipelines. The cover surface features scientifically designed anti-slip patterns and offers multiple surface treatment options, including hot-dip galvanizing and epoxy asphalt spraying, ensuring long-term durability under various environmental conditions.
As a critical component of urban infrastructure, LuZhongBao’s 24-inch cover combines practicality and safety. Its precision-manufactured cover-frame system ensures stable and firm installation without rocking or noise. The product undergoes strict quality control, achieving a load-bearing capacity of D400-class (400 kN), making it suitable for most applications such as urban arterial roads and parking lots. It is an ideal choice for municipal engineering and property management.
