Export RFQ Data Needed for D400 Manhole Covers
To ensure accurate pricing and compliance with international project standards, please specify the following regional and logistical variables when submitting your Request for Quotation (RFQ).
| Customs HS Code | 7325.99 (Other cast articles of iron or steel) |
|---|---|
| Estimated Unit Weight | Approx. 55 – 75 kg/set (Total mass including ductile iron cover & flanged frame) |
| Destination Port | Global Hub Ports (e.g., Rotterdam, Jebel Ali, Houston, Sydney) (Required for CIF / DDP logistics) |
| Standard Equivalents | Europe: EN124 D400 (400kN) | USA: AASHTO H20 / HS20 Heavy Traffic | Australia: AS3996 Class D |
| Clear Opening | 600×600 mm / 24×24 inches (Custom dimensions available upon engineering request) |
| MOQ & 20ft FCL | Min. Order: 1×20′ GP Container (Approx. 250 – 300 sets depending on specific frame design and pallet loading density) |
| Packing Method | Standard export wooden pallets / Heavy-duty crating (Fumigated & Steel banded) |
| Required Documents | Certificate of Origin (COO), SGS / BV Inspection Reports, Mill Material Test Reports |
| Submit RFQ | ➔ Submit Project RFQ Details |
D400 Manhole Cover with Frame Overview
D400 heavy duty ductile iron manhole covers with frames are designed for road drainage, municipal utility access, parking areas and infrastructure projects where stronger load-bearing performance is required. The D400 load class is commonly used for areas exposed to regular vehicle traffic, such as road shoulders, commercial access roads and municipal drainage points.
Compared with light-duty access covers, a heavy duty ductile iron manhole cover must provide stable seating, good impact resistance, reliable cover-and-frame fit and long-term durability in outdoor environments. The matching frame helps improve installation stability and reduces the risk of movement, noise or poor seating after installation.
For projects exposed to regular vehicle traffic, the cover should not be selected by size alone. Buyers also need to check the expected load, chamber opening, frame fit, surface pattern and coating requirement. A D400 manhole cover with frame is commonly used where stable seating and repeated traffic resistance are important.
If you are comparing A15, B125, C250 and D400 load classes, you can also read our manhole cover load class guide before confirming the final specification.
For road and municipal projects, buyers can specify this product as an EN124 D400 maintenance hole cover with frame when the application requires a heavy-duty cover-and-frame set for regular vehicle traffic areas.
Product Application / Project Use
For more details about load class selection, dimensions and typical road applications, you can read our EN124 D400 manhole cover guide.
This D400 ductile iron manhole cover with frame is suitable for municipal drainage systems, road utility access points, parking areas, commercial streets, industrial parks and infrastructure maintenance projects. It can be used in projects where the cover may be exposed to repeated vehicle traffic, road vibration, rainwater drainage and regular inspection access.
- Road drainage and inspection chambers
- Municipal utility access points
- Parking areas and commercial access roads
- Industrial parks and infrastructure projects
- Road shoulder and roadside drainage areas
- Custom project applications based on drawings
Specification Table
| Item | Specification |
|---|---|
| Product Name | D400 Heavy Duty Ductile Iron Manhole Cover with Frame |
| Material | Ductile Iron |
| Load Class | D400 |
| Design | Cover with matching frame |
| Shape | Rectangular |
| Surface Design | Anti-slip surface pattern |
| Frame Option | Cover and frame set |
| Size | Custom size available according to drawings or project requirements |
| Surface Treatment | Black bitumen coating, painting, epoxy coating or custom coating |
| Applications | Road drainage, municipal utility access, parking areas, industrial parks, infrastructure projects |
| Customization | Size, frame type, marking, surface pattern, coating, packaging |
| Packaging | Pallet, wooden case or export-ready packaging |
| Order Type | Project order / bulk order / OEM customization |
Key Product Features
D400 Load Class for Heavy Duty Use
The D400 load class is suitable for areas where the cover may be exposed to regular vehicle traffic. It is often selected for roads, parking areas, municipal access points and drainage projects where stronger load-bearing performance is needed.
Ductile Iron Material
Ductile iron provides good strength, toughness and impact resistance for outdoor drainage and utility access applications. It is commonly used for heavy duty manhole covers where long service life and stable performance are required.
Matching Cover and Frame
The cover and frame set helps improve installation stability. A proper frame fit can reduce movement, vibration and noise after installation, especially in traffic or drainage areas.
Anti-Slip Surface Pattern
The surface pattern helps improve slip resistance for vehicles and pedestrians. This is useful for outdoor drainage projects exposed to rainwater, road dust and regular traffic.
Custom Size and Marking Options
Custom sizes, markings, surface patterns, logos and coatings can be produced according to drawings, samples or project requirements. Buyers can provide chamber dimensions or technical specifications for review.
Customization Options
Available customization options include cover size, frame size, surface pattern, marking, logo, coating, packaging and project-based specifications. Buyers can provide drawings, samples, chamber dimensions or technical requirements for review before production.
More options are available in our ductile iron manhole covers category.
Packaging and Export
For export orders, D400 heavy duty ductile iron manhole covers with frames can be packed with pallets, wooden cases or other export-ready packaging methods. Proper packaging helps protect the frame edges, surface coating and heavy casting structure during loading, shipping and unloading.
For project orders, quality inspection can include appearance check, dimension review, coating inspection and packing confirmation. You can learn more from our quality control process.
Related Products and Categories
For projects that require a rectangular access cover for municipal drainage or utility inspection, you may also view our rectangular ductile iron manhole cover.
For round access covers used in road drainage and municipal projects, you can also review our round ductile iron manhole cover with frame.
FAQ
What does D400 mean for a ductile iron manhole cover?
D400 refers to a heavy duty load class commonly used for areas exposed to regular vehicle traffic, such as roads, parking areas and municipal access points. The final selection should be based on the project location and traffic conditions.
Can this D400 manhole cover be supplied with a frame?
Yes. This product is supplied as a cover-and-frame set, which helps improve installation stability and cover seating performance.
Is this product suitable for road drainage projects?
Yes. It is suitable for road drainage, municipal utility access, parking areas, commercial streets, industrial parks and infrastructure maintenance projects.
Can the size be customized?
Yes. Custom sizes can be produced according to drawings, samples, chamber dimensions or project specifications.
Can custom markings or logos be added?
Yes. Custom markings, utility names, project names, logos and identification text can be added according to buyer requirements.
What surface treatments are available?
Common surface treatments include black bitumen coating, painting, epoxy coating and custom coating options depending on the project environment and buyer requirements.
What information should buyers provide for a D400 manhole cover with frame quotation?
For a D400 manhole cover with frame quotation, buyers should provide the required load class, clear opening size, frame outer dimensions, frame depth, cover shape, quantity, project drawings, and applicable standard. These details help confirm the cover size, frame fit, suitability of the load class, and production requirements.
Buyers should also share the installation area and expected traffic conditions, as well as the applicable standard, destination market, or local project requirement. D400 covers are commonly used for carriageways, road shoulders, commercial access roads, parking areas with regular vehicle loading, municipal utility access points, industrial parks, and other heavy-traffic locations.
If the project is for replacement work, buyers should provide photos or drawings of the existing manhole opening and frame when possible. For custom projects, buyers should also confirm whether any special frame type, locking system, anti-theft design, custom logo, surface marking, anti-slip pattern, drainage holes, or special coating is required before requesting a quotation or beginning production.
Clear project information helps recommend a suitable D400 ductile iron manhole cover with frame, reducing the risk of size mismatch, frame mismatch, quotation delays, or installation problems.
For export or municipal projects, buyers can also ask whether inspection documents, dimension checks, coating inspection records, packing photos, or load test information are available before shipment.
When should buyers choose a D400 manhole cover with frame?
A D400 manhole cover with frame is recommended when the project needs a complete cover-and-frame set for new installation, replacement work, road drainage, municipal access, or heavy-traffic areas. The matching frame helps improve seating, load distribution, installation fit, and long-term performance compared with using a cover alone.
For replacement projects, buyers should first check whether the existing frame is still suitable for the required D400 load class. If the old frame is damaged, mismatched, unstable, corroded, or causing poor seating, a complete D400 manhole cover with frame may help reduce cover movement, rattling noise, installation problems, and the risk of premature replacement.
A cover-only replacement may work if the existing frame is structurally sound, correctly sized, and suitable for the required load class. If the frame condition, clear opening size, frame depth, seating surface, or traffic load is unknown, buyers should confirm these details before ordering. This helps ensure that the correct D400 cover and frame solution is recommended.
Request a Quote
Need a D400 manhole cover with frame for your road drainage or municipal access project? Send us your drawing, size, quantity, load requirement, frame requirement, surface treatment and destination port. Our team can help review the specification and provide a suitable quotation.
Contact us to discuss your project requirements.