Hydraulic system for TACK expanding

The new TECO hydraulic manual expanding system
Is an easy to operate tool specifically designed for enlarging tube ends to produce the slight contact required between the tube O.D. and the tube sheet hole.
PRIOR TO WELDING THE JOINTS.
It can also be used to calibrate tube ends.
It is also used to fix the tube into the tube sheet hole before normal expansion by means of a conventional expander.