- Type: Clay Wet Sand
- Sand Core Type: Clay Sand Core
- Machining: Machining Center
- Surface Treatment: Galvanized
- Standard: BS
- Trademark: CZ
- Origin: Shandong China
- Casting Method: Thermal Gravity Casting
- Application: Architectural Engineering
- Material: Iron
- Surface Roughness: Ra0.4
- Certification: ISO 9001:2000, ISO 9001:2008
- Specification: 600x600
- HS Code: 73251090
Manhole cover and gratings: EN124; ISO9001
Surface Box: BS 5834 Part 2:2011; ISO9001
Drainage channels: EN1433; ISO9001
Grooved coupling and fittings: UL/FM/CE; ISO9001
Manhole covers are divided into the following classes:
A15, B125, C250, D400, E600, and F900.
A15 Areas which can only be used by pedestrians and pedal cyclists
B125 Footways, pedestrian areas and comparable areas, car parks or car parking decks
C250 For gully tops installed in the area of 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
D400 Carriageways of roads(including pedestrian streets), hard shoulders and parking areas, for all types of road vehicles
E600 Areas imposing high wheel loads, e.g. docks, aircraft pavements
F900 Areas imposing particularly high wheel loads, e.g. aircraft pavements
Manhole Covers advantages:
Cover and base frame integrate connection.
Ductile iron complying with Grades EN-GJS-500-7 or gray iron.
3. Free design
It can be designed according to the user's demands, including logo, surface pattern, and any other specification.
4. Corrosion resistant
Sewer internal environment complex ,filled with various chemical substances,ductile iron does not suffer chemical corrosion,service life more than 30 years.
Range of UV stable colours available that will not flake or crack. Minimum lifespan of 30 maintenance free years.
The toughness of ductile iron is fourfold that of ordinary cast iron,close to steel materials,suitable for all kinds of road use.
Light weight,single unarmed can be open,convenient maintenance.
Warmly welcome all the users and customers to patronize.if you need,please get in touch with us at any time.