... for radiators, PLC control, full automatic High frequency spiral fin tube welding machine is for producing spiral fin tubes ... , PLC control, full automaticThis machine is PLC control, inverter adjusting speed, full automatic, automatic loading & clamping, automatic feeding, welding and unloading.Main ... thickness: 0.8-3.5mm 4) Fin material width: 10-40mm (not bigger than base tube diameter) 5) Finished ...