... machine:XZ-40,XZ-50,XZ-60,XZ-80,XZ-100,XZ-120,XZ-160,XZ-250,XZ-300,XZ-400 ... . 3.steel tube necking down,fire-fighting apparatus and materials,gas-tank, oxygen bottle,dia.Φ40mm-Φ150mm-250mm, large-scale elbowtube end ... ,welding 7.metal smelting 8.gear, chain wheel quenching XZ-100 medium frequency induction heating machine