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