With the continuous improvement of urban greening construction today, tree guard grilles, as key facilities for protecting tree root systems and enhancing street landscapes, directly impact tree growth conditions, pedestrian safety, and the city's image. Traditional tree guard grilles often face problems such as insufficient load-bearing capacity, susceptibility to rust, and poor anti-theft performance, while ordinary composite products struggle to meet the demands of high-load scenarios due to insufficient durability. The Luzhongbao Ductile Iron Tree Grate, based on the material advantages of ductile iron and innovative structural design, successfully solves the technical pain points of traditional tree pit facilities through scientific spatial layout and precision manufacturing processes, and has now become the ideal choice for projects like municipal roads and landscape gardens.
Ductile iron obtains a spheroidal graphite structure through spheroidization and inoculation treatment, giving it comprehensive properties approaching those of steel, combining high strength with high toughness. The Luzhongbao Ductile Iron Tree Grate strictly complies with municipal facility standards, is precision-cast using QT500-7 grade ductile iron, with a tensile strength exceeding 500 MPa and an elongation rate over 7%. Its unique hollowed-out structural design not only retains over 80% of the water and air permeability space but also allows flexible adaptation to different tree pit sizes through modular combination. The surface is treated with dual protection of hot-dip galvanizing and epoxy asphalt coating, ensuring long-term corrosion resistance in humid soil environments, with a design life exceeding 30 years.
I. Material Advantages: The Core Value of Ductile Iron
The microstructure of ductile iron gives the material excellent mechanical properties and durability. Its spheroidal graphite morphology is formed through spheroidization treatment with rare earth-magnesium alloy, giving the material an impact resistance more than 10 times that of ordinary cast iron, while maintaining high tensile strength (≥500 MPa) and elongation (≥7%). This characteristic enables the Luzhongbao Tree Grate to withstand D400 grade loads, fully meeting the usage requirements for areas like sidewalks and plazas.
Compared to ordinary cast iron, the corrosion resistance of ductile iron is significantly improved, with a corrosion rate only 1/40 that of ordinary steel pipes. Through hot-dip galvanizing treatment (zinc layer thickness ≥70μm), the product's protection grade in humid soil environments reaches C5-M, effectively resisting erosion from root secretions, rainwater, and de-icing agents. Furthermore, the inherent recyclability of the material complies with green construction concepts, greatly enhancing the product's whole-life-cycle value.
II. Structural Innovation: Integration of Function and Aesthetics
1.Efficient Water and Air Permeability System:
The grate adopts a radial hollowed-out design, with the permeable area accounting for over 80%. It ensures rapid rainwater penetration to the root system while effectively intercepting debris and preventing soil compaction. The unique gradually varying aperture layout, optimized through fluid dynamics, maintains over 95% drainage efficiency even during heavy rainfall.
2.Modular Combination Design:
The product consists of multiple symmetrical panels connected via a bolt connection system for flexible assembly. This design can adapt to the growing space needs of different trees and facilitates later maintenance and replacement. The expansion groove structure reserved around the tree hole provides sufficient space for tree growth, avoiding cost increases from later modifications.
3.Balancing Safety and Aesthetics:
The surface uses a three-dimensional anti-slip pattern (friction coefficient ≥80 BPN), ensuring pedestrian safety in rainy or snowy weather. The grate edges employ a rounded chamfer design, avoiding injury to pedestrians from sharp angles while creating a smooth transition with the curb. The product supports customized patterns and colors, enabling harmonious unity with the surrounding architectural style and enhancing the overall landscape effect.
III. Functional Characteristics: Multiple Protective Guarantees
Root Protection: The hollowed-out structure of the grate prevents soil compaction, ensures smooth root respiration, and reduces soil erosion.
Environmental Improvement: Effectively improves regional environmental hygiene levels by suppressing dust and reducing garbage accumulation.
Anti-theft Design: Uses a concealed fastener system, installed with special tools, fundamentally preventing theft.
Noise Reduction Effect: Elastic rubber pads embedded between the grate and the base effectively eliminate noise from pedestrian footsteps.
IV. Construction Convenience and Economic Benefits
The modular design of the Luzhongbao Tree Grate improves installation efficiency by over 50%. During construction, simply lay the base flat and connect the modules with bolts; installation time for a single system does not exceed 30 minutes. Its precise dimensional control ensures a perfect fit with the tree pit, requiring no on-site cutting or adjustments.
From a whole-life-cycle cost analysis, the product's service life exceeding 30 years and extremely low maintenance requirements reduce comprehensive costs by over 35% compared to traditional products. According to engineering statistics, after adopting this tree grate, tree maintenance frequency is reduced by 60%, effectively saving water resources and labor costs.
V. Application Scenarios and Adaptation Performance
The load-bearing capacity of the ductile iron tree grate enables it to adapt to various scenarios:
Municipal Roads: Meets the load requirements for sidewalks and non-motorized vehicle lanes, enhancing the overall aesthetics of the street.
Landscape Plazas: Echoes the landscape theme through customized pattern design, enhancing the artistic effect.
Commercial Streets: The high-strength characteristic adapts to usage demands in high pedestrian traffic areas, while ensuring safety through anti-slip design.
The product supports personalized customization. Specifications and patterns can be adjusted according to needs such as tree pit size and landscape style, achieving the perfect combination of function and aesthetics.
Summary
The Luzhongbao Ductile Iron Tree Grate, with its excellent material properties, innovative structural design, comprehensive functional configuration, and significant economic benefits, has become the preferred solution for modern urban greening construction. It not only solves the technical defects of traditional tree guard grilles in terms of load-bearing capacity, durability, and anti-theft performance but also, through modular design and ecological function optimization, provides reliable guarantees for healthy tree growth and urban landscape enhancement. Choosing this product means injecting lasting quality assurance and comprehensive value into urban greening projects, which is the fundamental reason for its continued recognition in the market competition.
