... well adapted 6.heating fast. saw blade welding machine,saw blade heating equipment,saw blade welding.Application:1. Heat shapingA, All kinds ... annealing, stretch, expanding.3.Heat treatmentHardening, Annealing, Tempering for Surface, inner bore, local, integral of All kinds of hardware ... ,from high-voltage electric shock hazard.6. Heating efficiency up to 90% more than in high frequency vacuum tube ...