Manhole Covers
Round Manhole Covers
A Ø600 circular cover seated in a square frame — the standard round access format on GCC utility networks.
Round Covers
Ductile iron, EN 124 D400
A circular cover in a square frame. The round casting cannot be dropped in askew and distributes wheel load evenly around its whole circumference, while the square frame beds into the surrounding surface the same way the rest of the range does. Cast to EN 124-2 D400 for carriageway duty.
- Material
- Ductile iron EN-GJS-500 (GGG50)
- Standard
- EN 124-2 D400
- Cover diameter
- Ø626
- Frame corner radius
- R150
- Options
- GRP sealing plate provision
- Seating clearance
- 2.8 mm
Specifications
1 size, 1 load class
Dimensions in millimetres. Sizes outside this range are produced to order.
| Reference | Clear opening(mm) | Frame outer(mm) | Frame depth(mm) | Load class(EN 124) | Weight(kg) | Drawing |
|---|---|---|---|---|---|---|
| Ø600 Solid Top | Ø600 | 750 × 750 | 102 | D400 | 52 |  Preview only — contact us for the full drawing or DWG |
Common questions
Specifying manhole covers
- Why is a round cover set in a square frame?
- The round casting cannot fall through its own opening and cannot be dropped in askew. The square frame beds into the surrounding surface the same way the rest of the range does.
- What clear opening does it give?
- 600 mm diameter, in a 750 x 750 mm frame with R150 corners.
- What load class is it?
- EN 124 D400, the carriageway class, rated for a 40 tonne test load.
- Can you supply other diameters?
- Yes. The published size is the standard; other diameters are produced to order.