Product Overview
Our anti‑settlement hinged round manhole cover is engineered to solve common road problems including pavement sinking, cover shifting and noise caused by vehicle impact. Constructed from high‑strength QT500‑7 ductile iron, the integrated hinge connects cover and frame, preventing loss or misplacement during inspection. The anti‑settlement structural design disperses vehicle pressure evenly, greatly reducing pavement damage around well openings. Widely adopted in municipal roads, urban trunk roads, residential districts and commercial traffic zones.
Core Features
Anti‑Settlement Structural Design
Special load‑transfer frame shares road surface pressure, avoids uneven subsidence of well base, keeps manhole cover flush with surrounding road surface, eliminates bumpy driving experience.
Built‑in Hinge Connection
Cover and frame linked by heavy‑duty hinge. The cover cannot be completely separated from the frame. Effectively prevents cover theft, loss and wrong installation; convenient for quick opening during underground pipeline maintenance.
QT500‑7 Ductile Iron Material
High tensile strength and outstanding impact resistance. Resists repeated rolling by heavy‑duty vehicles, no cracking or breaking under long‑term traffic load.
Anti‑Noise & Anti‑Vibration
Rubber buffer gasket fitted between cover and frame. Eliminates clattering noise when vehicles pass by, reduces friction and abrasion, extends service life.
Application
Municipal urban roads, main traffic lanes, community roads, commercial plazas, hospital & campus roads, industrial parks, sewer & water supply pipeline projects.
Technical Specifications
- Material: Ductile Iron QT500‑7
- Standard: EN 124
- Load Class: A15 / B125 / C250 / D400 / E600 optional
- Shape: Round, hinged integrated frame‑cover structure
- Surface Finish: Bitumen coating
- Accessories: Hinge, rubber anti‑noise gasket
- Customizable: Inner diameter, outer size, logo engraving, load grade
- Certification: ISO 9001, CE compliant
Packaging & Shipping
Packed on solid wooden pallets for sea and land transportation, effectively prevent collision damage. Support FOB, CIF, DDP terms. Both standard and custom orders are acceptable with controllable lead‑time.
FAQ
Q: What material is this hinged round manhole cover made of?
A: It is cast from QT500‑7 ductile iron, featuring high impact resistance and load‑bearing capacity for heavy traffic.
Q: How does the anti‑settlement function work?
A: The special frame structure distributes vehicle pressure to surrounding road base. It keeps the cover flush with pavement and reduces road subsidence around the well opening.
Q: What is the advantage of the hinge design?
A: The hinge connects cover and frame as one unit. It avoids cover loss, misplacement and theft, meanwhile making pipeline inspection much easier.
Q: Which load classes are available?
A: Compliant with EN124 standard. Options: A15, B125, C250, D400, E600 for pedestrian, roadway and heavy‑vehicle zones.
Q: Can I customize sizes and logos?
A: Yes. We support custom dimensions, inner diameter, and engraved logos or text on cover surface.
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