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 unauthoriz

-ed persons and material.

We produce various classes of manhole cover and gratings in gray iron or ductile iron from Class A15

to F900 according to customer's sample or requirm

-ent.

1. High load strength

Less noise and lower vibration transmissions.

2. Against theft,noise and rust.

3. Durable life.

4. Free design

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 Serbedge, 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

rements