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A duct mandrel and duct brush are used together to clean, clear and check underground electrical, telecommunications and utility cable ducts before installing fibre optic or copper cables.
A steel mandrel is used to prove the duct, and is either pulled or pushed through the duct first. This checks the internal diameter and structural integrity of the cable duct pipe, checking for blockages, crushing or kinks.
Mandrels are also available as polypropylene mandrels.
After the mandrel has confirmed the path is clear, it is common practice to use a cylindrical duct brush to clear and sweep away any remaining dust, silt, sand or lose construction debris.
Set up is normally by towing, by attaching a draw rope, winch cable for cable duct rod to the pulling eyes on either end.
For suitability of the cable duct mandrel to your duct pipe, as a guide we advise the the duct brush diameter should be 10% smaller then the inner dimension of your pipe (cable duct).
For Duct proving. Painted Steel 240mm long fitted with threaded steel rod and pulling eye each end to give overall length 350mm
Standard sizes as follows.
A duct mandrel and duct brush are used together to clean, clear and check underground electrical, telecommunications and utility cable ducts before installing fibre optic or copper cables.
A steel mandrel is used to prove the duct, and is either pulled or pushed through the duct first. This checks the internal diameter and structural integrity of the cable duct pipe, checking for blockages, crushing or kinks.
Mandrels are also available as polypropylene mandrels.
After the mandrel has confirmed the path is clear, it is common practice to use a cylindrical duct brush to clear and sweep away any remaining dust, silt, sand or lose construction debris.
Set up is normally by towing, by attaching a draw rope, winch cable for cable duct rod to the pulling eyes on either end.
For suitability of the cable duct mandrel to your duct pipe, as a guide we advise the the duct brush diameter should be 10% smaller then the inner dimension of your pipe (cable duct).
For Duct proving. Painted Steel 240mm long fitted with threaded steel rod and pulling eye each end to give overall length 350mm
Standard sizes as follows.
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