1. Light weight,Anti-corrosive
2. High pressure endurance
3. Easy to install and open
4. Long and steady service
2.Ductile Iron manhole cover & grating features:
1. High strength:The tensile strength of ductile iron is more than 420Mpa and the yield strength is more than 300MPa, three times more than gray iron.
2. Good toughness: impact value is similar to carbon steel and 10 times than grey iron.
3. Good plasticity. Elongation of ductile is more than 7% which is similar with high-carbon steel, gray iron material and extend rate is zero.
4. Anti-corrosion resistance: The corrosion was only 0.25 times of pipes during ninety days spray corrosion test and 0.1 times of gray iron pipes. The life is 2 times longer than gray iron pipes and 5 times longer than ordinary steel pipe.
5. Applied In most municipal applications: water, salt water, steam, the corrosion resistance and oxidation resistance of cast iron are more than steel. Because of the spherical graphite cast iron microstructure, ductile iron does better than steel in reduced vibration capacity.
3. Ductile Iron manhole cover & grating Tehcinical Data:
| 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(300X300) to(1000) 1000*1000 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 | BSI, ISO9001:2000 |
| Products | manhole cover & gratings and grates, furnace, bases, machinery parts, cookers, valve bodies, pipe fittings, auto parts |
Advantages we have:
1. Experienced manhole products supplier"
2. Professional design team and sales department for your service;
3. 10year iron casting experence, factory recognized by 'CE/ISO9001' and so on;
4. 7*24 service for you, all the question will be dealed within 24hours.
Benefit you get:
1. Stable quality -- Coming from good materials and technic
2. Lower price -- Not cheapest but the lowest at the same quality
3. Good service -- Satisfactory service before and after sale
4. Delivery time -- 30-45 days for mass production
For more information,welcome to contact us:
