... tool, drilling tool, alloy saw blade, hard alloy cutter, milling cutter, reamer, planning tool and solid center bit.2. Welding of heating ... such as "one " bits, pillar gear drill bits, dovetail coal drill bits, drill rods riveting, all kinds of shearer, boring ... Drill rod heatedWH-VI-4040KW380V 50-60HZ30-150 KHZ460*360*63090%Small quenchingWH-VI-5050KW380V 50-60HZ40-150 KHZ590*450*78090%Standard ...