... radiators, PLC control, full automatic High frequency spiral fin tube welding machine is for producing spiral fin tubes ... for radiators, PLC control, full automaticThis machine is PLC control, inverter adjusting speed, full ... high frequency power: 100kVA, 200KVA, 300kVA, 400kVA (for different base tube diameter)Please contact us for details. high frequency spiral fin tube welding machine ...