Ductile Iron Manhole Cover Round - 12.5 Tonne x 450mm Diameter

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Code CLKS1657KMB
EAN Code 0691208214346
Weight (kg) 16.500000
Brand Clark-Drain
Colour Black Bitumen Coated
Material Ductile Iron
Style Ductile Iron
Tonne Loading 12.5 Tonne
Dimension 550mm x 30mm
Specification BS EN 1561:2011
Size 450mm Diameter Opening
£77.21 £64.34
You need to spend another £250.00 to qualify for 2.5% discount.

Manhole Cover 12.5 Tonne Round Ductile Iron 450mm Diameter

Suitable for Pavements and Driveways

Clear Opening size 450mm Diameter

Overall Size 550mm Diameter x 30mm Depth

Suits All Major 450mm Polypropylene Inspection Chambers.

What is ductile iron?

Leaving the science aside, the main difference between ductile iron and other types of cast iron is that it is much less brittle. This means that it is more flexible than traditional gray cast iron and generally has a higher tensile strength.

Ductile Iron is the most popular type of iron alloy in areas where impact resistance is important, such as manhole covers. Other common applications include pipes, automotive parts and bollards.


Our ductile iron manhole covers are manufactured by Clark-Drain to BS EN 124-2:2015, which is the standard that specifies where each class of cover can be installed. Our range of ductile cast iron manhole covers can be used for all types of loadings from pedestrian to airports.

If you do not see the exact cover that you need here please do contact us, as Clark-Drain offer an extremely comprehensive range of covers that are not all shown on this page (please note that extended lead times may apply).