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700*700mm(27.6")C250 and D400 Medium Duty Round Ductile Iron Manhole Cover and Frame

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700*700mm(27.6")C250 and D400 Medium Duty Round Ductile Iron Manhole Cover and Frame

Application: Slow Moving Heavy Traffic and Carriageway of roads
Material: Ductile Iron
Paint and Color: Bitumen Paint
Clear open:φ663mm
Cover Dimension:φ700mm
External Dimension: φ900mmx190mm
Customization:Support
Certifications:ISO9001,ISO14001,ISO45001,CE
  • Product Details

If you’re looking for China-made manhole covers and frames, you’ve come to the right place. No matter what your application is, we can help. Here at FEILONG, we strive to provide our clients with the perfect manhole cover and frame that will suit your needs. Our engineers work directly with you to design custom made to order manhole covers and frames or any of our other products. We receive your information, design your cover based on your needs, send an approval drawing and a formal quote prior to completing the sale.

 

manhole cover

Product structure size Clear Open (mm) Cover (mm) Loading Class
φ663 φ700 C250 and D400
 Frame (mm) Height of Frame (mm)

Thick of Cover's edge (mm)

φ900 190 22

 

Details

 

loading

 

Advantages of Ductile Cast Iron

 

-High Strength and Durability

Compared to grey cast iron, ductile iron has higher tensile strength, yield strength, and elongation, making it suitable for heavy-duty applications requiring stress resistance.

 

-Good Machinability

Ductile cast iron is more accessible to machines than steel or aluminium due to its lower hardness and better lubrication properties. This can save time and cost in the production process.

 

-Good Casting Properties

Ductile iron has excellent fluidity, filling complex moulds with intricate details and thin sections. It can also be cast in larger sizes without porosity or cracking.

 

-Corrosion Resistance

Due to its high carbon content and protective graphite layer, ductile iron is resistant to corrosion from many chemicals, water, and atmospheric conditions. It is often used in marine and offshore applications.

 

 

The applications of ductile iron manhole covers include but are not limited to municipal construction, water project like sewerage, water supply, footway,  rainwater, gas, heat, fire, telecommunication, carriageway, etc.

 

 

 

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  • 3 production bases and 4 series products
  • 9 standardized digital workshops and 7 digital automatic production lines.
  • More than 200 sets of hydraulic equipment and More than 600 employees.
  • 200.000㎡ factory area.
  • Passed the CE,ISO9001, ISO14001 and ISO45001 certificates.
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