Manhole Cover B125 Ductile Iron Manhole Cover EN GJS500-7 Ｕsed of Pavements

Manhole Cover B125 Ductile Iron

Applications:

Class A15 Area which can only be used by pedestrians and pedal cyclists
Class B125 Folkways, pedestrian areas and comparable areas, car parks or parking decks
Class C250 For gratings installed in the area of kerbside channels of roads which, when measured from the Serb edge, extend maximum 0.5 m into the carriageway and maximum 0.2 m into the foot way
Class D400 Arrive ways of roads (pedestrian streets included), hard shoulders and parking areas for all types of road vehicles
Class E600 Areas subject to high axle loads such as docks and airports
Class F900 Areas subject to very high axle loads such as airports

Description:

The ductile iron Square manhole cover is mainly composed of cover and frame, which mainly ingredients are spheroidal graphite cast iron. Ductile iron Square manhole cover installed on vehicular traffic and pedestrian areas to prevent anyone or anything falling into well, which also can convenience repair personnel to maintain equipment, such as Thermal Square manhole cover, Telecommunication Square manhole covers. All manhole covers totally meet with EN124-2 standard, which is widely used Global market.

Specifications:

Standards and features:

1. high strength. Tensile strength σs≥420MPa, yield strength σs≥300MPa, same as low carbon steel, three times that of gray iron

2. Good toughness. The impact value is similar to that of medium carbon steel, which is more than 10 times that of gray iron material.

3. Good plasticity. The elongation is as large as 7%, which is similar to high carbon steel, while the gray iron steel has an elongation of zero.

4. Strong corrosion resistance. In the water spray corrosion test, the corrosion amount in 90 days is only one tenth of that of the steel pipe, which is one tenth of that of the gray iron pipe. The service life is twice that of gray cast iron, which is 5 times that of ordinary steel pipe.