350 mostly using in HVAC duct working for connecting duct with TDC flanges sheet thickness from 0.8 to 3.5 mm.

With the clinching process, the sheet of metal to be joined are placed on top of each other. Then the tool cuts a strip in to the sheets in a combined punching and forming process. A form-fitting and corrosion-resistance connection joins the top and lower sheets as the materials flow into one another. The connection points solidifies resulting in a permanent connection without additional tools or heat.