850*850mm Octagonal Square Locking Ductile Iron Manhole Cover
Production Advantages:
Round manhole covers are easier to handle and manipulate due to their ability to roll, unlike square covers, which are more cumbersome to move.
The primary characteristic of a manhole cover is its strength, making round covers an ideal choice. Round covers distribute weight more evenly and are better equipped to handle heavy loads and high speeds compared to square covers. The weakness of square covers lies in their design; the center-to-edge distances vary, making the middle less robust and the corners the strongest points under pressure. In contrast, the center-to-edge distance of a round cover is uniform in all directions, ensuring consistent strength across the entire surface.
Additionally, round covers are simpler to install because they don’t require alignment. They can be placed at any angle and will fit perfectly, whereas square covers must be carefully aligned with the manhole edges before installation.
Production Description:
| Model | Clear Opening (mm) | Outer Frame Size (mm) | Height (mm) | Material | Load Class (EN124) | Weight (kg) | Features |
| ODLC-600 | 600 × 600 | 750 × 750 | 100 | Ductile Iron | D400 | 85 | Anti-theft locking, Anti-slip surface |
| ODLC-700 | 700 × 700 | 850 × 850 | 100 | Ductile Iron | D400 | 105 | Anti-theft locking, Consistent strength design |
| ODLC-800 | 800 × 800 | 950 × 950 | 100 | Ductile Iron | D400, C250 | 140 | Lockable, Durable, Weather-resistant |
| ODLC-900 | 900 × 900 | 1050 × 1050 | 100 | Ductile Iron | C250 | 180 | Secure locking system, Heavy-duty |
| ODLC-1000 | 1000 × 1000 | 1200 × 1200 | 100 | Ductile Iron | D400 | 240 | Suitable for heavy vehicle areas |
Key Features:
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Shape: Octagonal design for enhanced aesthetics and precise fit.
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Material: Made from high-strength ductile iron (e.g., QT450-10), ensuring exceptional durability and resistance to wear and tear.
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Locking Mechanism: Anti-theft locking system to prevent unauthorized access and ensure safety.
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Load Rating: Conforms to EN124 Standards, supporting load classes such as C250 (medium load) and D400 (heavy load).
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Anti-Slip: Surface pattern design to prevent slipping, ensuring safety in wet or high-traffic environments.
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Corrosion Resistance: Coated to withstand harsh weather conditions and reduce rust.
Group Profile
SND has been producing and selling metal goods for about 20 years.By using manufacturing techniques including sand casting, lost wax casting, lost foam casting, and precision machining, the company has been supplying goods made of materials like cast iron, steel, stainless steel, aluminum, etc. Additionally offered are surface finishing and assembly services.
Our company has successfully created products in a variety of industries, including automotive, rail transportation, agricultural machinery, chemical, energy, electricity, water, air compressor, and construction, thanks to our consistent efforts over the past few years.
Our factories' ISO9001-accredited quality control systems guarantee a consistent and dependable quality for each and every component.
Spectrometer, ultrasonic, magnetic, permeability, elongation, tensile/yield strength, and other inspections are carried out as part of routine production procedures.
Product Tags:
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850*850mm Octagonal Locking Manhole Cover Ductile Iron Square Inspection Cover Images
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