HomeProductsDuctile Cast Iron Products400×600×60 Ductile Iron Square Grate

400×600×60 Ductile Iron Square Grate

Product Features:

Outstanding Durability and Long Service Life,Good Toughness and Impact Resistance,Low Maintenance Cost

In urban road construction and pipeline inspection infrastructure, reliable and sturdy manhole facilities are crucial. The Luzhongbao 400×600×60 Ductile Iron Square Grate is a standard product meticulously designed and manufactured to meet this core requirement. Made from high-quality ductile iron material (QT500-7) and produced in strict compliance with national standards (e.g., GB/T 23858), it is specifically engineered for medium-load areas such as sidewalks, non-motorized lanes, green belts, and internal community roads. It serves as a critical component in ensuring traffic safety and maintaining the smooth operation of underground pipelines.  

Featuring a rectangular dimension of 400mm × 600mm and an optimal thickness of 60mm, this square grate perfectly fits standard square manholes. Ductile iron endows it with exceptional comprehensive properties, combining near-steel strength with the excellent damping properties, wear resistance, and castability of cast iron. Every Luzhongbao product undergoes rigorous quality control, providing long-lasting and robust protection for urban infrastructure.

Product Description

Luzhongbao 400×600×60 Ductile Iron Square Grate: The Optimal Choice for Durable Municipal Facilities.

Core Features of 400×600×60 Ductile Iron Square Grate  


1. Exceptional Load-Bearing Capacity  

Cast from high-strength QT500-7 ductile iron (Tensile Strength ≥500MPa, Yield Strength ≥320MPa, Elongation ≥7%).  

60mm thickened design significantly enhances structural rigidity, bending resistance, and impact resistance.  

Complies with GB Class A (≥400kN) or Class B (≥250kN) load requirements (specific grade depends on design), effortlessly handling routine loads on sidewalks, non-motorized lanes, green belts, and internal community roads.  


2. Outstanding Anti-Theft & Stability  

Standard concealed anti-theft hinges tightly interlock the grate with the frame, preventing unauthorized opening and accidental displacement.  

Robust installation ensures no noise, bouncing, or movement under traffic, guaranteeing smooth and safe passage.  


3. Superior Slip Resistance  

Surface features finely designed anti-slip patterns (e.g., cross lines, raised points, fish scale textures) to maximize friction.  

Ensures sufficient grip in rain, snow, or oily conditions, effectively preventing slips and enhancing pedestrian safety.  


4. High Precision & Easy Maintenance  

Strict dimensional accuracy (400mm×600mm) ensures seamless compatibility with matching frames for efficient installation.  

High flatness allows smooth integration with road surfaces, minimizing bumps and improving aesthetics and driving comfort.  

Durable construction reduces maintenance needs and extends service life, lowering long-term costs.  


5. Excellent Corrosion & Weather Resistance  

Ductile iron matrix offers inherent corrosion resistance.  

Surface treatments (e.g., asphalt coating, epoxy paint, hot-dip galvanizing) provide additional protective layers.  

Effectively withstands urban environmental hazards like acid rain, de-icing salts, and moisture, significantly outlasting ordinary cast iron grates.  


The Luzhongbao 400×600×60 Ductile Iron Square Grate, with its superior strength, anti-theft security, slip resistance, precise fit, and long-term durability, stands as the ideal solution for square manholes in non-heavy-load urban areas. It delivers solid assurance for the safety, reliability, and efficiency of municipal engineering.

Luzhongbao

High Precision from Luzhongbao!

Provide your needs

Request a Quote

If you have any questions
please feel free to contact us.

Learn more about Luzhongbao

Focus on the field of caterpillar mobile crushing and screening, so that solid waste recycling more efficient!

Equipped with modern production equipment and optimized production processes, we can deliver products quickly and with high quality to meet customers' time requirements.
Free to contact us