The series of small-power, back pressure industrial steam turbines are single-stage turbines. All models have one impeller with pitch diameters of 320.400.500.630.800mm. The governing system is woodward governor principle. Bearing are lubricated with oil rings, without outer supply oil system. The minimal power of this series is 25kw, maximum power is 2500kw, and the driven machine is able to mount on common baseplate with the turbine itself, the exhaust flange faces sideward of upward, and the turbine is therefore, suitable for a single-deck arrangement. It can be used chiefly for driving pumps, blowers, compressors and generators, if required, for industrial purposes. It can be designed with the various parameters and construction to meet different user's requirement.