... controlling: anti-corrosive controlling flux and display flux. B function of flux foam device With foam function, inner foam pump, ... surface temperature is lower than fire point of flux. 5 Preheat: it can meet preheating need of batch PCB welding, uniformity temperature, ... steel2 Capacity: 100kg double wave crest capacity 3 Height range of wave crest: 08mm adjustment and keep wave crest balance. ...