This procedure is suitable for removal of inner errors or reduction of wall thicknesses at a defined inner diameter.
Pull boring is also used for drilling out, e.g., stainless steel centrifugal casting tubes.
The drilling tool follows the present pipe centre in this procedure and enlarges the inner diameter while maintaining present wall thickness differences. We have 6 drilling machines available for pull boring.
Bore diameter: 50 – 300 mm
Bore depth: max. approx. 13,000 mm
The maximum workpiece length depends on the bore diameter.