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Load classifications

D400 solutions

Access covers and gratings capable of withstanding a 40-tonne test load. For use in areas where pneumatic-tyred cars and lorries have access, including carriageways, hard shoulders and pedestrian areas. All units are to be either non-rock or have quietness in use.

Unite D400 Manhole Cover

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Whether you are looking for live project support, or are in the initial stages of specification, we are always on hand and happy to help.

Related case studies

Related case study

Improving Reliability with Dudley Metropolitan Borough Council

Dudley Metropolitan Borough Council is responsible for maintaining and improving Dudley’s roads and highways, which consist of a network of some 600 miles of both major and minor roads. Wrekin's Unite range and Unipak mortar were used in the improvement of the quality of roads around the Dudley area.

Dudley Metropolitan Borough Council
Dudley Metropolitan Borough Council
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Related case study

Years of exceptional performance

Our Highway D400 covers are still operating at full capacity after three and a half years of being subjected to high levels of HGV traffic. Meaning the organisation can focus solely on new work, rather than being distracted by manhole covers that have failed prematurely and need fixing or, in some cases, reinstalling.

Scottish Water
Scottish Water
Read more