The OVERPIPE HDPE Mechanical Protection Plate was developed in collaboration with the Research and Development Department of GDF Suez to provide an alternative to concrete slabs.

With a thickness of 15 mm and a length of 1800 mm, we offer HDPE plates with widths from 1250 to 1800 mm designed to protect large diameters buried pipelines (high pressure gas, hydrocarbons etc…).

Made of injected HDPE, the plates are designed to resist the assault of a 32 tonne excavator.



The Overpipe HDPE Mechanical Protection Plate fits the requirements of Gaz de France, Saudi Aramco, Petronas, Total, Air Liquide, Fluxys… regarding the transportation by pipeline of high pressure gas.

French Law gives the OVERPIPE plates a risk reduction coefficient of 0.01, which means the risk of hitting the pipeline is divided by 100.



  • Made from an injection moulded virgin HDPE polymer for consistency & strength.
  • Holes across the surface of the plate allow the flow of water and no disruption of cathodic protection measurement. The holes are made by moulding and not by later drilling which would weaken the plates.
  • Non-slip pins on both sides coming from the moulding to facilitate handling and avoid slip and fall accidents.
  • Coloured and UV resistant to be an effective warning signal. Overpipe can be produced in different colours depending on the nature of the utility.
  • Customizable warning message, moulded in relief into the surface.
  • Light weight (30 to 40 kilograms depending on the model), they are particularly easy to install and can be easily removed to allow inspection or repair of the pipeline.
  • The plates can be butted end to end or for total protection, overlapped using a unique clip system


Product Code Description  Size (mm)  Weight Colour Qty/Pallet
811008 Overpipe OV5 570 Gas 570 x 1500 x 15 11.55 yellow 90
811009 Overpipe OV6 820 Gas 820 x 1500 x 15 18.45 yellow 60
811010 Overpipe OV1 1250 Gas 1250 x 1800 x 15 30.8 yellow 30
811011 Overpipe OV2 1400 Gas 1400 x 1800 x 15 34.25 yellow 30
811012 Overpipe OV3 1500 Gas 1500 x 1800 x 15 36.7 yellow 30


Overpipe OV4 1600 Gas 1600 x 1800 x 15 39.2 yellow



Overpipe Connector



Overpipe Brochure

Overpipe Dimensions


Overpipe NATA Testing Report