... heat treating Application: all classes of machine parts heattreating(quenching,anneal, temper,normalizing),braze welding,smelting,copper ... .chain,chain wheel heat treatment 6.Dia.Φ3m,weight 80ton gear quenching 7.Dia.Φ1016mm,depth 17.5mm steel tube1000 degree ... necking down 9. copper bar annealing, wire annealing 10. machine tool guideways gear,chain wheel quenching 11.elbow heating tube end expansion ...