850*850mm Octagonal Locking Manhole Cover Ductile Iron Square Inspection Cover

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:

Key Features:

1. Shape: Octagonal design for enhanced aesthetics and precise fit.

2. Material: Made from high-strength ductile iron (e.g., QT450-10), ensuring exceptional durability and resistance to wear and tear.

3. Locking Mechanism: Anti-theft locking system to prevent unauthorized access and ensure safety.

4. Load Rating: Conforms to EN124 Standards, supporting load classes such as C250 (medium load) and D400 (heavy load).

5. Anti-Slip: Surface pattern design to prevent slipping, ensuring safety in wet or high-traffic environments.

6. 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.

SND Foundry have been specializing in the production and sales of manhole cover and gully grating, valves, pipe & pipe fitings and metal castings products nearly 20 years. It is located in Wu'an Industrial Park, Handan City, Hebei Province. The park is the largest mechanical casting spare parts processing industrial park in Handan, with a complete supporting industry chain and convenient transportation.

SND has fully passed the ISO9001 quality management system certification. During the production process, it implements a number of strict detailed standards and conducts full-process quality control. Our company has well-equipped chemical laboratories and physical performance laboratories. A complete set of testing equipment such as Direct Reading Spectrometer, Metallographic Microscope, Rockwell Hardness Tester, Universal Material Testing Machine, Non destructive testing(NDT), and Three-dimensional Coordinate Measuring instrument can be used to effectively control chemical composition and ensure mechanical performance.

Company Mission:
Committed to creating high-quality products and service, creating a century enterprise trusted by customers, respected by society, the most valuable and internationally influential
Work Attitude: Responsibility Pragmatism Professional