The product is manufactured in full accordance with the EU EN124 road manhole cover specification, using QT500-7 high-strength ductile iron as the raw material. Compared with ordinary gray cast iron, its toughness is increased by three times, and its tensile strength meets the standard of over 500MPa. It is resistant to impact, rolling, and low temperature, and is not easily brittle or cracked. It can withstand the repeated passage of heavy trucks for a long time without cracking or collapsing.
Load level Class D400, rated load capacity of 400kN, suitable for all heavy-duty road scenarios.
Large support wing anti settlement of well seat
The square well frame is surrounded by widened triangular support wings, which extensively adhere to the roadbed concrete, disperse the load of road vehicles, eliminate the problem of sinking and height difference of the well cover after long-term use, completely solve the hidden dangers of road potholes and bumps, and significantly reduce the cost of road maintenance in the later stage.
Round cover square seat anti displacement and anti overturning
The circular manhole cover is paired with a square manhole seat limit structure, which prevents the manhole cover from rotating or lifting inside the manhole seat, thus preventing safety accidents such as vehicle crushing, bouncing, and pedestrian overturning; The hollow design of the well seat reduces weight, making it more secure when pouring concrete during construction.
Integrated anti-skid panel
The surface of the manhole cover is densely covered with deepening grid anti slip patterns, with sufficient concave and convex depths. The increased friction on rainy, snowy, and waterlogged roads makes it less likely for pedestrians and electric vehicles to slip, improving road safety; The overall thickness of the panel is thick, and it is not easy to deform due to local stress.
Silent shock absorption
Reserved sealing strip slots are reserved on the fitting surface between the manhole cover and the manhole seat. After installing EPDM rubber strips, there is no metal impact noise when the vehicle is rolled, effectively alleviating road noise pollution.
Anti theft opening hole
A dedicated lifting hole is reserved in the center of the manhole cover, which can be easily opened for maintenance with a dedicated pry bar; No exposed large gaps, optional anti-theft lock structure to prevent the manhole cover from being stolen or lost.
Clear standard identification
The surface of the manhole cover is stamped with EN124 and D400 load level markings, and the bottom of the well seat is marked with specifications and models, making it easy to understand for engineering acceptance and foreign trade quality inspection.
Long term rust prevention treatment
The surface of the finished product is sprayed with a high-temperature asphalt anti rust coating, which isolates rainwater, soil, acid and alkali corrosion. It is not easy to rust and peel off after more than ten years of outdoor use.
Applicable scenarios
Product Specifications
