... tubes for radiators, PLC control, full automatic High frequency spiral fin tube welding machine is for producing spiral ... radiators, PLC control, full automaticThis machine is PLC control, inverter adjusting speed, full automatic, automatic loading & clamping, automatic feeding ... finned tube length: 8m, 12m, 16m 6) Equipped high frequency power: 100kVA, 200KVA, 300kVA, 400kVA (for different base tube ...