Application: all classes of machine parts heattreating(quenching,anneal, temper,normalizing),braze welding, ... frequency induction heating machine:frequency from20 to 80KHZ Application: all classes of machine parts heattreating(quenching,anneal, temper,normalizing),braze welding,smelting ... XG-400,XG-500. Example :1.various kind of shaft quenching, depth of quenching1.5-3mm,dia.Φ 10mm-250mm,inside bore ...