Against the backdrop of the demand for efficient operation of urban drainage systems, drainage grates, as a crucial part of road drainage, directly impact drainage efficiency, traffic safety, and municipal maintenance costs. Traditional cement or ordinary cast iron grates often struggle to meet modern urban requirements due to problems like insufficient load-bearing capacity, susceptibility to damage, and poor drainage performance. The Luzhongbao 700×800 Ductile Iron Circular Drainage Grate, based on the material advantages of ductile iron and structural innovation, achieves a breakthrough in comprehensive performance including high load-bearing capacity, clogging prevention, and long service life through precision casting technology and scientific design, and has now become the product of choice for scenarios such as municipal engineering and major traffic arteries.
This product strictly complies with national standards and uses QT500-7 grade ductile iron material. Its 700mm × 800mm circular structure is optimized through fluid dynamics, combining maximum drainage efficiency with structural stability. The grate surface is designed with raised anti-slip patterns (height ≥ 3mm) and incorporates a T-shaped rubber strip embedded in a U-shaped groove to achieve shock absorption and noise reduction. Furthermore, the frame has pre-set anchor bolt holes, combined with an anti-theft locking system, effectively preventing displacement and theft. These characteristics enable the product to adapt to high-load traffic environments, with a design service life exceeding 50 years.
I. Materials and Structure: The Foundation of Core Performance
The exceptional performance of the Luzhongbao drainage grate stems primarily from the material characteristics of ductile iron. Through spheroidization treatment, ductile iron has spheroidal graphite, giving it a tensile strength exceeding 500 MPa, with toughness and impact resistance far surpassing ordinary cast iron. This material property enables the product to withstand D400 grade and higher loads (i.e., heavy vehicle traffic over 40 tons), and it resists deformation and fracture during long-term use.
Structurally, the circular design not only ensures even force distribution but also avoids the risk of falling through due to diagonal errors. The grate interior features radially arranged reinforcing ribs, significantly enhancing load-bearing capacity while optimizing the layout of drainage holes. Its open area ratio is calculated to enable rapid drainage while effectively intercepting debris like leaves. The elastic sealing strip at the edge engages tightly with the frame, further eliminating noise and rainwater leakage.
II. Functional Innovation: Solving Industry Pain Points
1.Anti-Settlement Design: The frame bottom expands the pressure-bearing area and is fixed to the road base with anchor bolts, dispersing the load to the road structural layers, completely solving the problem of pavement settlement around the manhole.
2.Efficient Drainage and Clog Prevention: The curved drainage channels and reasonable aperture design increase the water flow area while reducing debris ingress, preventing drain blockages.
3.Safety and Anti-Theft: The surface anti-slip pattern ensures pedestrian safety in rainy or snowy weather, while the dedicated hinges and locks require special tools to open, providing a physical anti-theft mechanism to protect public assets.
III. Construction Convenience and Economy
The lightweight characteristic of the ductile iron grate (weighing only a fraction of traditional cement grates) makes transportation and installation more convenient. The modular design supports synchronous construction with the asphalt pavement: the frame can be directly embedded into the asphalt layer, and after compaction, it integrates smoothly with the road surface, significantly shortening the construction period.
From a whole-life-cycle cost perspective, the product's service life exceeding 50 years and near-zero maintenance requirements significantly reduce costs associated with frequent replacement or repair. Although the initial investment is slightly higher than ordinary products, its durability and saved maintenance costs improve comprehensive benefits by over 30%.
IV. Brand Assurance and Application Adaptability
As a professional municipal facility manufacturer in Central China, Luzhongbao has passed certifications such as the ISO9001 Quality Management System, and its products have undergone national-level testing. The 700×800 circular grate can adapt to various scenarios including urban arterial roads, airports, and plazas. Surface treatment processes (such as hot-dip galvanizing, asphalt coating) can be customized according to requirements to enhance corrosion resistance.
Summary
The Luzhongbao 700×800 Ductile Iron Circular Drainage Grate, with its high-strength material, structural innovation, construction convenience, and long-term economy, has become the ideal choice for modern urban drainage construction. It not only solves the pain points of traditional grates regarding settlement, drainage, and safety but also promotes the sustainable development of municipal facilities through standardized products. Choosing this product means endowing urban infrastructure with reliable, durable, and efficient value, which is the core reason for its widespread market recognition.
