We have considerable experience in semi-automatic brazing machines to join steel parts for automoblies, steel chairs, steel furnitures, bicycles etc.. Gas flux applied through the flame can be easily adapted to a wide variety of brazing machines from oxy-acetylene gas mixtures to oxy-propane/natural gas mixtures. For high production, the brazing alloy can be introduced into the joint area by auto wire feeders with gas flux. A cleaning operation is generally not required after brazing when gas flux is used.