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Home > Supplier Companies > Machines Roger International > Articles > Conventional V-30 Drilling
Machines Roger International

Conventional V-30 Drilling

Oct 22, 2013

This method of drilling is used with the conventional V-30 drilling head.


A 16.5 cm (6.5 inch) pilot hole is drilled to the target on the lower level. The pilot hole is reamed to 25 cm (10 inch). The V30 drilling head is then attached and is pulled to the upper level. 


Source: http://www.machines-roger.ca/three_methods_of_drilling.ws

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