... arms,large workrange SL-903 Universal air tapping machine: Tapping machineInformation:* Tapping for copper, iron, aluminum, steel, stainless ... industry and aircraft engine manufacture. ship manufacturing. * Tapping the scope of M3 to M24, the work ... speed, high accuracy thread, and increased production capacity. * Vertically, horizontally and different angles Tapping. * Extraordinary load operation ...