Anti Frozen Durable Rectangular Gully Grid With Frame Black Surface Finished
grating size:300*400*50mm
1) product overview
1. Product information
Manhole Covers are manufactured for construction and public use. Manhole Covers shall be smooth and free from sand holes, blow holes, distortion or any other defects
2. Material
a) Ductile Iron GGG500-7 / 400-12
b) Grey Iron GG20
3. 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
4. Coating
a) Cold applied black bitumen
b) Without coating
c) Coating as per customers' requirement
5. Process
c) Molding boards
d) Green sand with hand molding
6. Different accessories are available
2) product parameters
| Name | Ductile Iron manhole cover & grating |
| Material | Ductile iron GGG50/7 gray iron |
| Standard | EN124/1433/1563 |
| Class | A15,B125 C250 D400 E600 F900 |
| Shape | Round / Square Rectangle Triangle and other shape |
| Size | From 300*300 to 1000*1200*60 or custom size |
| Paint | Bituminous black |
| Advantage | Longevity corrosion resistance, Excellent anti-pressure |
| Molding | Depends on the design |
| Process | Drawing-mould making-raw casting-sand blasting-rough machining-surface treatment-product inspection |
| Application | motor vehicle Road, municipal administration, living quarters communications, electricity and water supply works |
| Certificate | ISO9001:2000 |
| Products | manhole cover & gratings and grates, gate valve, pipe fittings, radiator, surface plate, surface box |
3) product used
the product was used for the road
4) Product advantage
1. No inherent scrap value thus reducing risk of theft
2. Moderate weight and easy installation
3. Can be used in -30℃ to 70 ℃ degrees environment
4. 30 years of service life
5. Tested by national security agencies. Compressive, bending and impact resistant. Heat, cold, acid, etc.
6. Corrosion resistance, meet the needs of environmental protection, and reduce the exploitation of mining resources; beautify the city, classify the coloring, and enhance the taste of the city.
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