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Noise-Free Water Proof Safty Manhole cover Φ918X135

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[Additional Information]
  • MaterialSpheroidal graphite Cast iron(GCD-500)

[Hanyang Eng.]

  • South Korea South Korea
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Noise-Free Water Proof Safty Manhole cover Φ918X135


During a localized torrential downpour in the center of a city, it will protect the inner facilities with preventing the rain water flows into the manhole. And it will reduce filing of civil complaints because the manhole cover will block noise when the vehicle is passing above it. Moreover, this is the product that can help to decrease the budget of government and municipality by reducing the related maintenance costs.


 • Noise-free

Rubber packs are added between manhole frame and manhole cover , so there is no noise   in busy road with many vehicles.


  • Water proof

    Rubber packs are inserted between manhole frame and manhole cover, so it protects the facilities inside the manhole during a localized torrential downpour with water proofing.


  • Accident prevention with Safety ring

    Installation of Safety ring on manhole frame. Even if the manhole cover is opened, the safety ring prevents the related accidents such as falling into a manhole accident or vehicle rollover accident.


  • Riser ring (height-adjustable)(option)

The raising manhole process will be finished after putting the riser ring on manhole frame without excavation around the manhole. So, you can reduce the related costs dramatically(50~80%).


  • Quick installation

Minimize traffic congestion with simple and quick manhole raising process.


  • Eco- friendly

Since there is no digging process of asphalt concrete around the manhole also waste is not generated, it helps environment protection.



• SIZE : Φ600x90, Φ648x110, Φ648x250, Φ766x135, Φ918x135

• USE : Water and sewage, Electricity, Telecommunication, Gas pipeline

• MATERIAL : Spheroidal graphite Cast iron(GCD-500)

• COMPOSITION : Manhole frame + Riser ring + Manhole cover

• OPTION : Riser ring, Ordor Suppression Devices