Below Ground Products
MUNICIPAL CASTINGS & ACCESS PRODUCTS
PDM stock a comprehensive range of the most popular sizes complying with the standard classification of loading categories.
All our iron products carry the BSi Kitemark EN124 certification.
A full range of fabricated steel manhole covers are also available to order and bespoke designs can be sourced.
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Ductile Iron Manhole Covers & Gully Grates & Frames
A comprehensive range of access covers and gratings for the sewerage and drainage industry. All products are manufactured under ISO 9001 and carry the BSI Kitemark where applicable. The range uses the benefits of ductile iron to Manhole Covers
Solid top & Double Triangular Class A15, B125, D400 & E600 Surface Boxes
Solid Top & Double Triangular Class D400 |
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Ermatic Gas & Water Tight Covers
Ermatic products provide a comprehensive and highly specified range of access covers. The horizontal and vertical faces of the cover and frame are machined to give metal to metal contact between the seating faces. The addition of a film of grease renders the cover surface watertight. |
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Galvanised Steel Access CoversA range of fabricated covers are available in galvanized steel. These include the following:
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D400 - 'Highway' Ductile Iron Cover & FramesKitemarked
Our Highway design incorporates several patented features that have been
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Lifting Keys
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D400 - 'Utility' Ductile Iron Cover & FramesKitemarked Our Utility range is based upon the standard square framed manhole cover design commonly used throughout the UK. By using finit element analysis at the design stage we have been able to not only improve the performance but also gain great efficiencies in manufacture. This has enabled us to provide a cost-effective product suitable for all locations, that is both to EN-124.
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C250 - Ductile Iron Single Seal Cover & FramesKitemarked
Standard Options: |
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B125 - Ductile Iron Single Seal Cover & FramesKitemarked
Standard Options: |
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A15 - Cast Iron Single Seal Cover & FramesKitemarked
Standard Options: |
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A15 - Cast Iron Single Seal Cover & Frames(Non-Kitemarked)
Standard Options: |
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PPIC covers and framesA15 - Cast Iron cver & Plastic frame PPIC type cover and frame.
A15 - Cast Iron cover & frame PPIC type cover and frame
All plastic PPIC cover and frame, 3.5tn SMWL c/w 3 locking screws |
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D400 - Ductile Iron 'Captive Hinged'
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D400 - Ductile Iron 'Double Triangular'
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C250 - Ductile Iron 'Captive Hinged'
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B125 - Cast Iron 'Captive Hinged & Dished'
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Ductile Iron Surface BoxesBS EN124 - D400 Kitemarked
Standard Options: |
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Grade a (Heavy Duty) Ductile Iron Surface BoxesBS 5834
Standard Options: |
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Cast Iron Stop Tap Boxes |
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Ductile Iron Kerb Drainage UnitsBS EN124 - D400 Kitemarked |
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STANDARD CLASSIFICATION LOADING CATEGORIES |
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GROUP 1 |
For use in pedestrian areas where motor vehicles have no access. |
BS EN124 |
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GROUP 2 |
For use in car parks & pedestrian areas where infrequent motorised |
BS EN124 |
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GROUP 3 |
For use in areas where slow moving heavy traffic has access & ares not |
BS EN124 |
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GROUP 4 |
For use in all carriageways & main roads where fast moving traffic is |
BS EN124 |
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GROUP 5 |
For use in areas where high wheel loads are apparent. |
BS EN124 |
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GROUP 6 |
For use in areas where extremely high wheel loads are evident. |
BS EN124 |


































