Perimeter trunking 40mm ± 2.0mm deep can be bent to a radii of 6.0m minimum, internal or external. Anything smaller, then the trunking has to be segmented (like 20 or 50 pence coin).
Perimeter trunking 50mm ± 2.0mm deep can be bent to a radii of 7.5m minimum, internal or external. Anything smaller, then the trunking has to be segmented.
Perimeter trunking 60mm ± 2.0mm deep can be bent to a radii of 9.0m minimum, internal or external. Anything smaller, then the trunking has to be segmented.