Luzhongbao 1200×740×60 Ductile Iron Split-Type Square Grate: The Sturdy Choice for Large Maintenance Access
Core Features of 1200×740×60 Ductile Iron Split-Type Square Grate
Ultra-Strong Load-Bearing & Heavy-Duty Protection
Made of high-strength QT500-7 ductile iron (Tensile Strength ≥500MPa, Yield Strength ≥320MPa), offering excellent mechanical properties.
60mm thickened design significantly enhances overall rigidity and deformation resistance, easily meeting GB Class D400 (≥400kN) or even Class E600 (≥600kN) load requirements. Safely applicable in harsh environments like urban main roads, heavy-duty lanes, ports, docks, and airport runways.
The split-type structure ensures ultra-large coverage while effectively distributing loads and enhancing overall load-bearing stability.
Convenient Opening & Efficient Maintenance
Unique split-type dual-cover design is the standout feature. Single cover weight is substantially reduced, allowing easy opening/closing by one person, significantly improving maintenance efficiency.
Equipped with heavy-duty specialized hinges (typically external or reinforced concealed hinges) connecting one cover plate to the frame for smooth operation and precise positioning; the other plate can be freely removed.
Designed for operational convenience, it is the preferred choice for large utility wells requiring frequent access.
Stable Safety & Reliable Anti-Theft
Features high-security specialized locks or anti-theft bolts/pins (on movable covers) to prevent unauthorized opening and theft, ensuring facility and personnel safety.
Precision interlock between covers and frame ensures structural stability—no displacement, noise, or bouncing under repeated heavy-vehicle traffic, guaranteeing smooth and safe passage.
Reasonable seam design ensures flatness and stability when covers are closed.
Exceptional Slip Resistance & Traffic Safety
Surface adopts deep-reinforced anti-slip patterns (e.g., large herringbone, diamond studs, or composite textures), providing high friction coefficients.
Delivers strong tire grip even in adverse conditions (rain, snow, oil), effectively preventing skidding and ensuring safety for high-speed or heavy-load vehicles.
Precise Compatibility & Long-Lasting Corrosion Resistance
Large 1200mm×740mm dimensions are precision-manufactured with strict tolerance control, ensuring perfect compatibility with custom large frames for secure installation.
High flatness enables seamless integration with high-grade road surfaces, reducing bumps and noise while enhancing driving comfort.
Ductile iron matrix offers strong corrosion resistance. Surface typically undergoes enhanced anti-corrosion treatment (e.g., thick-layer hot-dip galvanizing, epoxy coal tar, or high-performance polyurethane coating), providing dual protection against extreme environments like heavy salt spray, de-icing agents, and chemical corrosion. Exceptionally long service life significantly reduces lifecycle costs.
The Luzhongbao 1200×740×60 Ductile Iron Split-Type Square Grate, with its exceptional combination of extra-large size, ultra-strong load capacity, convenient split-type access, top-tier security, and extended lifespan, stands as the professional benchmark product for large maintenance wells and heavy-duty square inspection well facilities. It provides solid and reliable assurance for the safe and efficient operation of urban arterial infrastructure.
