The Luzhongbao 450×750×40 Cast Iron Grate Assembly is a high-standard protective facility specifically designed for modern urban drainage systems, precision-cast from QT500-7 high-strength ductile iron. Its 450mm × 750mm rectangular dimensions and optimized 40mm thickness perfectly adapt to the drainage needs of areas such as municipal roads, plazas, and parking lots, combining exceptional load-bearing capacity with efficient drainage performance. The product strictly complies with national standards like GB/T23858 and, through innovative structural design, fundamentally solves industry pain points of traditional grates such as susceptibility to settlement, corrosion, and clogging. The unique integrated construction of the outer frame and grate core ensures precise fitting after installation, while the deep surface anti-slip patterns and reinforcement rib network further enhance safety and durability, making it an indispensable and reliable component in urban infrastructure.
Compared to products from ordinary manufacturers, the Luzhongbao Cast Iron Grate Assembly demonstrates significant advantages across five core aspects: First, the materials science advantage, using QT500-7 grade ductile iron with tensile strength ≥ 500 MPa and yield strength ≥ 320 MPa. Its mechanical properties far exceed those of ordinary cast iron, with elongation and impact resistance improved by over 50%. Second, the structural design advantage, the internal three-dimensional reinforcement rib grid and bottom support system are optimized through Finite Element Analysis, ensuring more uniform load distribution and extremely strong deformation resistance. Third, the anti-settlement technology advantage, the integrated design of the expanded frame and anchoring system effectively prevents asphalt settlement around the manhole, ensuring long-term levelness with the road surface. Fourth, the safety performance advantage, anti-theft locks and a highly anti-slip surface provide comprehensive protection. Fifth, the long-lasting anti-corrosion advantage, heavy-duty anti-corrosion coating technology gives the product a service life exceeding 30 years. These advantages enable Luzhongbao products not only to easily handle heavy loads exceeding D400 grade (400 kN) but also to operate stably in harsh environments like acid rain and de-icing agents, reducing the whole-life-cycle cost by over 40%.
