This machine is 3-axis numerical servo control pipe threading lathe, flat bed machine, especially suitable for drill pipe, HWDP drill collar pipe thread repairing, also can do other machining such as: turning excircle surface, inner bore, taper, arc, step, screw, chamfer etc. Machine main characteristic (1) The CNC system is FUNAC0i Mate-TD, X and Y axis use servo motor, with spindle servo drive system. (2) The software is the special thread repairing software which is researched and developed by ourselves, it is very convenient to repair thread. (3) With auto-centralization lubrication system (4) 3-jaw chuck in front and 4-jaw chuck at rear, clamping realiable (5) Front and rear chuck flange are connected by short cone, compared with screw connection, it is high rigidity, Easy and quick disassembly