The Ductile Cast iron Manhole Covers and frames and gully and grate which are produced by our company with below advantages:
----Security,prevent the cover being stolen
----No noise.
----High load-bearing
----corrosion resistance
----Safe
1. According to BS EN124:1994,
2. The material grade: GGG500/7,
3..Coating: black bitumen、epoxy powder.
4:Ductile iron manhole covers and gully grates are divided into the following classes:
A15, B125, C250, D400, E600 and F900.
1: (class A15 minimum) Test 1.5 metric ton
Areas which can only be used by pedestrians and pedal cyclists.
2: (class B125 minimum) Test 12.5 metric ton
Footways, pedestrian areas and comparable areas, car parks or car parking decks.
3: (class C250 minimum) Test 25 metric ton
For gully tops installed in the area kerbside channels of roads which when measured from the kerb edge, extend a maximum of 0.5m into the carriageway and a maximum of 0.2m into the footway.
4: (class D400 minimum) Test 40 metric ton
Carriageway of roads (including pedestrian street), hard shoulders and parking areas, for all types of road vehicles.
5: (class E600 minimum) Test 60 metric ton
Areas imposing particularly high wheel loads, e.g. docks, aircraft pavements.
6: quare/ Round Ductile Iron Manhole Cover and Frame
-----Heavy Duty Square and Rectangular Manhole cover and frame.
----Medium Duty Square and Rectangular manhole cover and frame.
----Light Duty Square and Rectangular manhole cover and frame.
-----Circular cover with circular frame
----Circular cover with square frame
-----Channel grating, double layer cover and frame
Manhole covers production process
Capacity load testing and inspection before delivery and loading containers
