Specification of A15 Ductile Iron Manhole Cover:

•Material: Ductile Iron GGG500-7

•Size Range: Dia760...

•Manufacture Standard: EN124:1994 

•external coating :Black Bitumen

Usage:

Pedestrians, Pedal Cyclists

Features of Ductile Iron Manhole Cover:

1. High load rating and strength

- Similar hard property as cast iron, while have a overwhelming advantage on stretch recovery.

- Less noise and lower vibration transmissions.

2. Against theft and safety options

- Zero theft value, reducing potential accident and further maintenance cost caused by thieves.

- Surface anti-slip thread guarantees safe road condition even in extreme weather.

- Locks are available as an option molded into the cover to improve security rate.

- Non-electricity conduction and non-heat conduction.

3. Lightweight 

- Compared with cast iron manhole covers, composited covers are 50% lighter.

- Lightweight allows more loading per vehicle, more convenient transportation and economical saving.

- Allows a safer working condition, which a SINGLE worker is enough when installation without risk of injury.

4. Durable service life.

- More than 30 years service life without crack and color fading, comparing to 5 years of cast iron.

- Anti corrosion,water, dust and pets tight, well sealed prevent poisonous gas leaking out.

- Without displacement, freely radio signal passing.

- Higher and lower temperature tolerance with the range -40°C-200°C.

- Wear indicators available when thread depth is in a danger value.

5. Free design

- Much more clear resolution ratio of surface design than cast iron or BMC.

6. Carbon footprint saving and environmental care.

- Lower embedded energy carbon emission and during manufacturing process than cast iron covers.

Packaging:

Metal band, plastic, wooden pallet

CNBM ductile Iron manhole covers and gully gratings are as per BS EN124 international standard, loading capacity ranging from A15, B125, C250, D400, E600 to F900.

The main materials of our manhole covers and gully gratings include composite resin, gray cast iron, ductile iron, stainless steel. Different materials mean different loading capacity.

We take pride to introduce ourselves as the leading manufacturer and professional supplier of various manhole covers and gully grating in China with total annual capacity 50,000 MT.