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The ribbed external wall ensures that the duct can withstand high compressive forces whilst the smooth inner bore resists any snagging.
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You should choose a diameter that allows plenty of room within the duct to allow the cable or cables to be drawn through smoothly.
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perforated drainage pipe can be used as a collector drain for the removal of excess surface water on gardens and fields to a suitable collection point. In construction, it alleviates flooding and relieves static load on underground structures and retaining walls.
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Polyethylene blue PE80 pipe. 12bar pressure. Plain-end coil. Suitable for use below ground on cold water services. Simple and quick to connect. Use with pipe inserts.