... classes of machine parts heattreating(quenching,anneal, temper,normalizing),braze welding,smelting,copper bar annealing,bar copper heating before forging ... , and so on. Type of machine: XG-18 ... 5-Φ12wire annealing. 3.drill bit welding. 4. Bar stock belowΦ25 through heating,speed faster than silicon controlled, Φ ...