Ductile Iron Manhole Cover Series

Product Performance Features

1. Super Load - Bearing
   Adopt ductile iron QT500 - 7 material. It has high compressive strength and excellent load - bearing performance, complying with national inspection standards.
2. Integrated Casting Molding
   The manhole cover has a tight combination, without phenomena like jumping, noise, or displacement, and no noise interference.
3. Safety and Anti - Theft
   Convenient for opening the manhole cover. Abandon the previous separable manhole cover design and adopt an opening - closing structure to prevent the manhole cover from being stolen and lost.

Ductile Iron Wide - Edge Anti - Settlement Manhole Cover

The anti - settlement round manhole uses high - strength cast iron material, and its surface undergoes paint dipping treatment. This can effectively prevent rust and ensure the product maintains good corrosion resistance and appearance during long - term use. Its load - bearing capacity is D400, suitable for areas with relatively high loads. It is widely used in municipal engineering, rainwater discharge systems, road traffic, and other places, and can withstand strong impacts from traffic, environment, and other external pressures.

Ductile Iron Wide - Edge Anti - Settlement Industry Standard (Ductile Iron Wide - Edge Anti - Settlement Inspection Manhole Covers are Preferred for Urban Roadways)

Specifications and Models of Ductile Iron Wide - Edge Anti - Settlement Manhole Covers

Specifications and Models of Ductile Iron Wide - Edge Anti - Settlement Manhole Covers

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Ductile Iron Round Manhole Cover

Specifications and Models of Ductile Iron Round Manhole Covers

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Ductile Iron Square Manhole Cover

Specifications and Models of Ductile Iron Square Manhole Covers

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Ductile Iron Rain Grate

Specifications and Models of Ductile Iron Rain Grates

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Ductile Iron Anti - Settlement Rain Grate

Specifications and Models of Ductile Iron Anti - Settlement Rain Grates

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Ductile Iron Trench Cover

Specifications and Models of Ductile Iron Trench Covers

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Application Fields

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Product Manufacturing Process

1. Smelting: Smelt the raw materials to provide the basic molten metal for casting.

2. Sand Mixing: Prepare the molding sand that meets the casting requirements.

3. Molding: Make the sand mold required for manhole cover casting.

4. Casting: Pour the molten metal into the sand mold to form the manhole cover blank.

5. Shakeout: Remove the molding sand attached to the surface of the manhole cover.

6. Shot Blasting: Clean the surface of the manhole cover to improve the appearance quality.

7. Grinding, Assembly, and Machining: Perform fine processing on the manhole cover and complete operations such as assembly.

8. Painting: Spray a protective paint layer on the manhole cover to enhance corrosion resistance and other performances.

9. Inspection: Conduct quality inspection on the finished manhole cover to ensure compliance with standards.

   
   

About Us

The company mainly adopts the clay sand molding method, with multiple automatic vertical parting flaskless shoot - squeeze molding production lines, core - making equipment, medium - frequency induction electric furnaces, sand processing production lines, and casting cleaning equipment. It has various advanced testing equipment such as front - furnace rapid analyzers, German Spectro spectrometers, metallographic microscopes, and universal testing machines.

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