1. Triple anti-noise patent technology.
The first patent : Put a rubber cushion between manhole cover and frame. The second patent : Make the manhole cover and frame more tighter and matched. The third patent : Set a elastic device at the back of manhole cover, in order to avoid manhole cover to deform.
2. Duplicate anti-theft patent technology.
The first patent : The antitheft protection of manhole cover combined with the lock. The second patent : Set a lock on manhole cover, such as general type, professional type, password type, electronic password type.
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Bearing Class / Loading Capacity of Cast Iron Manhole Covers |
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|
Class |
Apply to |
Bearing |
Remarks |
|
EN124-A15 |
Areas where only passed by Pedestrians and Bicycles. |
15KN |
|
|
EN124-B125 |
Footways, parking lot or similar areas. |
125KN |
HOT-SELLING |
|
EN124-C250 |
The edge combinative area of vehicle road and the pavement. |
250KN |
|
|
EN124-D400 |
Vehicle area and urban arterial road. |
400KN |
HOT-SELLING |
|
EN124-E600 |
Shipping port and parking apron area. |
600KN |
|
|
EN124-F900 |
Airplane taxiway and huge dock. |
900KN |
|