Automatic punching machine

sheet metaltrimmingdrilling

FLANGING, DRILLING AND EXTERNAL REINFORCEMENT ON THE FLANGE A US worldwide leading ventilation company continues its expansion with buying another DENN machine. This time it is a trimming, beading, flanging & hole punching machine, up to 2000 mm piece diameter and up to 6 mm thick steel. he winded and welded cylinders for long cased axial flow fans, filtration units, ventilation pipes, powder transport, etc. require an external flange for the fixation of one or both edges. The flanges have some holes and their number depends on the effort that it must carry. It is advisable to make a reinforcement on the external edge of the flange permitting to reduce considerably the thickness of the cylinder as well as the number of drills.