1,Cast Iron Manhole Cover Description :

A manhole cover is a removable plate forming the lid over the opening of a manhole, to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.

Manhole covers are often made out of cast iron, concrete or a combination of the two. This makes them inexpensive, strong, and heavy, usually weighing more than 50 kilograms (110 lb).

The weight helps to keep them in place when traffic passes over them, and makes it difficult for unauthorised people not having suitable tools to remove them.

A manhole cover sits on metal base, with a smaller inset rim which fits the cover.

The base and cover are sometimes called "castings", because they are usually made by a casting process, typically sand-casting techniques.

2,Main Features of the Ductile Iron Manhole Cover:

Designs .
a) EN124 A15, B125, C250, D400, E600 and F900
b) A60005 for casting design
c) Major standards designs available
d) As per customers' drawings or samples 

Process
c) Molding boards
d) Green sand with hand molding 

Coating
a) Cold applied black bitumen
b) Without coating
c) Coating as per customers' requirement 
Different accessories are available

3,Manhole Cover Images:

4,Manhole Cover Specifications:

1). material:ductile iron
2). low price and good quality
3). long service life

4). D400, C250, B125

5). According to EN124