The Luzhongbao 450×750×40 Cast Iron Grate Assembly is a high-performance drainage facility specifically designed for modern urban drainage systems. It is precision-cast from QT500-7 high-strength ductile iron. Its standard 450mm × 750mm dimensions and optimized 40mm thickness perfectly adapt to the drainage needs of municipal roads, plazas, and heavy vehicle traffic areas. This product strictly complies with the GB/T23858 national standard and the EN124 international load standard. Through innovative structural design and materials science application, it achieves breakthrough improvements in load-bearing capacity, durability, and drainage efficiency, providing fundamental solutions specifically targeting industry pain points of traditional grates such as susceptibility to settlement, corrosion, and low drainage efficiency.
Compared to products from ordinary manufacturers, the Luzhongbao Cast Iron Grate Assembly establishes three core advantages at the technical level: 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 significantly improved elongation, giving the product superior compressive and impact resistance. Second, the structural design advantage, with unique ribbing technology and internal reinforcement rib structure, ensures more uniform load distribution and improves deformation resistance by over 50%, fundamentally eliminating the risk of bending deformation during use. Third, the anti-settlement technology advantage, featuring an innovative integrated joint anti-settlement design that combines an expanded base and an anchoring system, completely solves the problem of asphalt settlement around the manhole and achieves permanent levelness with the road surface. These advantages enable Luzhongbao products not only to easily handle heavy loads exceeding 400 kN but also to maintain long-term stable operation in corrosive environments such as acid rain and de-icing agents, with a service life far exceeding the industry average.
