Cast iron manhole cover (ductile cast iron)

Product code: NHG-07

Ductile cast iron. This product is produced according to the BS EN124 standard.

Product details




No Product code Frame sizes (length x width x height) Cover sizes (diameter) Load
1 NHG-07 900 x 900 x 45 650 12,5 tons
2 NHG-07 900 x 900 x 100 650 25 tons

Size parameters

The European standard specifies the technical requirements for design and testing methods to the manholes cover and grating cover. They are used in areas which for vehicles and pedestrian. Depending on the design loading and the place of installation, they are divided into six classes such as A, B, C, D, E, and F.

- Group 1: Class A, loading capacity >= 15Kn ~ 1,5 tons. 

Areas where only passed by Pedestrians and Bicycles.

- Group 2: Class B, loading capacity >= 125Kn ~ 12,5 tons. 

Footways, parking lot or similar areas.

- Group 3: Class C, loading capacity >= 250Kn ~ 25 tons. 

The edge combinative area of vehicle road and the pavement.

- Group 4: Class D, loading capacity >= 400Kn ~ 40 tons.  Vehicle area and urban arterial road.

- Group 5: Class E, loading capacity >= 600Kn ~ 60 tons. Shipping port and parking apron area.

- Group 6: Class F, load capacity >= 900Kn ~ 90 tons. Airplane taxiway and huge dock.

Material: gray cast iron, ductile cast  iron

Surface Treatment: The products are dry and clean of dust, and painted with bitumen.