Circular Manhole Cover With Square Farme Ductile iron EN GJS500-7
Material of Manhole Cover :
Ductile Iron Manhole Cover
|Class||Application||Dimension (Frame mm)|
|A15||Pedestrians, Pedal Cyclists||Dia760|
|B125||Footways, Pedestrians, Car parks||290*290, dia800 ...|
|C250||Kerbside channel of roads||700*700, 600*800 ...|
|D400||Road, hard shoulders etc.||850*850, 920*920 ...|
|E600||Docks, aircraft pavements etc.||as per your demands|
|F900||Aircraft pavements etc.||as per your demands|
Manhole Covers Round With Square Farme
Manhole cover is a removeable plate and installed on vehicular traffic and pedestrian areas to prevent anyone or anything falling in. Special-function manhole covers should keep out unauthorized persons and materials falling into, and convenience repair personnel to maintain equipment, such as Telecommunication manhole covers. Manhole covers have many perfect performance: high strength, beauty appearance, easy to use, guard against theft, Acid and alkali resistance, corrosion resistance, wear resistance, rolling resistance, long service life etc. We produce various classes from A15 to F900 according to customer’s drawings or requirement. Based on material, manhole covers can be categorized into four groups-metal manhole covers, cement-based composite, Recycled resin composite manhole cover, Polymer matrix composite manhole cover etc. Based on shape, manhole cover can be categorized into square and round. Round manhole cover is generally used urban road administration, which can better protect the safety of pedestrians and vehicles. In rural areas and cable wells, the square is widely used, which can better prevent rainwater and other liquids. All manhole covers totally meet with EN125-2 standard, which is widely used Global market.
1. 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.
2. 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.
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