What is a Ductile Iron Manhole Cover? A ductile iron manhole cover is a heavy-duty, durable cover made from ductile cast iron, which is known for its high strength, toughness, and excellent resistance to impact and corrosion. Compared to traditional cast iron covers, ductile iron manhole covers offer superior load-bearing performance and a longer service life.
Hongshun Industrial proudly supplies high-performance ductile iron manhole covers, engineered for strength, safety, and longevity. Manufactured in accordance with EN124 standards, our covers are designed to withstand heavy traffic loads while offering excellent resistance to corrosion, impact, and wear. Whether used in municipal infrastructure, industrial zones, or residential areas, our ductile iron manhole covers provide dependable protection and lasting performance.
OEM Manhole Cover Product Specifications
Our ductile iron manhole covers are manufactured in strict accordance with the EN124 standard, covering load classes from A15 to E600:
- A15: For pedestrian areas, sidewalks
- B125: For car parks and driveways
- C250: For residential streets and areas with light traffic
- D400: For main roads and highways, suitable for heavy vehicles
- E600: For industrial areas and heavy-duty load zones
| Parameter | Details |
|---|---|
| Material | Ductile Iron (QT500-7 / QT600-9) |
| Standard | EN124, ISO9001 |
| Load Class | A15 / B125 / C250 / D400 / E600 |
| Shapes Available | Round, Square, Rectangle |
| Surface Finish | Black bitumen coating or epoxy |
| Locking Mechanism | Optional (bolt, hinge, bar lock) |
| Sizes Available | 300mm to 1000mm and custom sizes |
| Application Areas | Roads, sidewalks, utilities, telecom |
Advantages of Ductile Iron Manhole Cover
1. Material Excellence – QT500-7 / QT600-9
Made from high-quality ductile cast iron, our manhole covers exhibit superior tensile strength and ductility compared to traditional gray iron, minimizing the risk of breakage or deformation.
2. Load-Bearing Performance – Up to D400 Rating
We offer a full range of load classes including A15, B125, C250 and D400, suitable for sidewalks, city roads, and heavy-duty areas like highways and airport runways.
3. Anti-Theft Design
Each manhole cover can be equipped with locking systems, hinge designs, or bolted caps to deter unauthorized access and prevent theft.
4. Slip Resistance Surface
The surface pattern is precision-designed for anti-slip safety, even in wet or icy environments.
5. Waterproof and Sealed Options Available
Choose sealed models to prevent odor leakage and water infiltration—ideal for sewer systems and utility installations.
6. Custom Logo & Text Castings
We support OEM & ODM customization: engrave your city name, logo, batch number, or specification directly onto the cover surface.
What Is the Difference Between Cast Iron and Ductile Iron Manhole Covers?
While both are types of cast iron, ductile iron manhole covers have higher tensile strength, impact resistance, and durability due to the spherical graphite structure within the material. Traditional grey cast iron covers are more brittle and suitable only for light-duty or decorative applications, whereas ductile iron covers are ideal for heavy-duty roads, highways, and industrial areas.
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call us: +8618837209569Ductile Iron Manhole Cover Applications
Our heavy-duty ductile iron manhole covers are widely used in:
- Municipal and road construction projects
- Drainage and sewage systems
- Telecommunication and electrical cable access
- Industrial plants and heavy vehicle areas
- Public parks, sidewalks, and parking lots
Why Choose Hongshun Industrial?
1. Advanced Casting & Machining Facility
Our factory uses modern resin sand casting lines, CNC machining centers, and full testing equipment to ensure each cover meets rigorous quality standards.
2. Global Supply Experience
With years of export experience, we deliver to customers in Europe, the Middle East, Southeast Asia, and Africa with on-time logistics and complete documentation.
3. Flexible MOQ & Fast Delivery
We accommodate both large bulk orders and custom small batch production, offering reliable lead times and consistent inventory supply.
4. One-Stop Customization Service
From drawing to sample to final production, we provide complete design-to-delivery service, supporting your branding and technical requirements.
Can You Provide Custom Manhole Cover Solutions?
Yes — as a professional OEM/ODM manhole cover supplier, we offer fully customizable ductile iron covers and frames. You can choose:
- Custom load ratings (EN124 D400, C250, E600)
- Company logo or lettering
- Custom sizes, shapes, or locking systems
- Special surface patterns for anti-slip or decorative purposes
one-stop service
Ductile Iron Manhole Cover Manufacturer – Hongshun
Contact us today via email or the online form to request a free quote. Our team will assist you in selecting the right ductile iron cover and frame for your application and send you a formal quotation with specifications and drawings for your approval.
