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Old 01-02-2005, 10:11 AM
DirtyDaveIrving DirtyDaveIrving is offline
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Definition: Mandrel Bender

Mandrel bending is when a set of balls, called a mandrel, is inserted into the pipe during bending. These balls are positioned and pulled through the pipe so that the bends are not deformed and maintain a close to perfect shape throughout the length of the bend. The pro’s are that the tube can be bent on a much tighter radius and still flow well due to the pipe being round and not collapsed. The machinery is expensive for a good quality CNC mandrel bender with the appropriate tooling.
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