... LF/VD/VOD/ESR/Vacuum consumable electrode.Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the ... slag re-smelting furnaces and 6 sets of 30 ton,50 ton,60 ton,100 ton matching heat treatment furnaces, cooling pits, heat shields ... ,125/35 ton crane and other auxiliary equipments. 6. Tech: ...