The oil country lathe meets the special requirements of users in the petroleum, geological, mining and chemical industries, and in agricultural irrigation and drainage, it is able to cut various straight and taper pipe threads of union joints, drill rods, casting pipes, drain pipes, well castings and water pump pipes more economically and efficiently as compared with the engine lathe, however, it may serve as an engine lathe to cut various metric, withworth and module threads, shafts and disks.