... heattreating(quenching,anneal, temper,normalizing),braze welding,smelting,copper bar annealing,bar copper heating before forging, and so on.Example : ... . 2. Φ5-Φ12wire annealing. 3.drill bit welding. 4. Bar stock belowΦ25 through heating,speed faster than silicon controlled ... bending. 8.steel tube heating necking down 9. copper bar annealing, wire annealing 10. machine tool guideways gear,chain ...