... metal tube welding(recommednd silver solder welding ring)1.Induction heating speedm,high efficiency.2.Compared withh oxygen welding, ... cutter,planer,saw blades,reamer.boring knifeThe advantages:1.Induction heating speed,high efficiency2.Simply put the sliver solder ... exquisite after weldingSmall metal tin welding The advantages:1.Induction heating speed ,high efficiency2.Energy saving and low cost,less ...