Industrial steam turbines – tailor-made and flexible

power output up to

0 MW
  • Inlet steam pressure: 103 – 180 bar(a)

  • Inlet steam temperature: 400 – 565 °C

Cutting-edge technology

Market leader for industrial steam turbines

As a market leader for industrial steam turbines, we offer a comprehensive range of reliable and versatile steam turbines for the power output range from 2 to 250 MW. Our industrial steam turbines are designed for easy constructability, fast start-up and economical operation.

Efficiency turns less into more. 

Siemens Energy Steam Turbines. Powered by efficiency. 

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Steam turbine with center steam admission

The SST-800 is a single casing steam turbine with center steam admission and reverse steam flow inner casing, designed for a direct coupled generator or mechanical drive.

The highly customized turbine provides for an outstanding efficiency, fast start-up times and high reliability and availability. It supports all requirements for economical installation and operation in combination with highest flexibility for complex industrial processes. A double or even multicasing solution can also be provided.

The SST-800 steam turbine can be used for both condensing and back-pressure applications.  Turbine auxiliary systems are also designed as pre-engineered modules covering the complete range of turbine sizes.

The turbine can be arranged on a foundation or as a package (includung oil system and on a base frame). The SST-800 steam turbine design is in accordance with DIN or API standards.

Technical data

  • Power output up to 200 MW  
  • Speed 3,000 to 7,100 rpm
  • Inlet pressure up to 165 bar / up to 2,393 psi
  • Inlet temperature up to 565 °C / up to 1,050 ° F
  • Exhaust steam parameters: up to 80 bar / 1,160 psi
  • Controlled extractions (up to 2): Pressure ext. valve up to 65 bar / 942 psi
  • Uncontrolled extractions: (up to 6): Various pressure levels

Typical applications


Dual casing steam turbine for reheat applications

The SST-700 / 900 is a standard turbine solution with short delivery time due to its fixed pre-engineered design. Predefined modules enable a short manufacturing period, cost-efficient material supply and a fast ex-works delivery.


The straight flow turbine solution with power output of up to 250 MW consists of a geared high-pressure steam turbine (backpressure), an intermediate / low-pressure steam turbine (condensing), both driving a generator installed in between.


The dual casing reheat turbine configuration with inner casing is a competitive and optimized product for combined cycle power plants and concentrated solar power plants.

Technical data

  • Power output up to 250 MW (CCPP: 230 MW)   
  • Speed 3,000 to 3,600 rpm
  • Inlet pressure up to 180 bar / up to 2,611 psi 
  • Inlet temperature up to 585 °C / up to 1,085 ° F
  • Exhaust steam parameters: up to 0.3 bar / 4.4 psi
  • Reheat steam temperature: 565°C / 1,050°F
  • Reheat steam pressure: 45 bar(a) / 842 psi
  • Controlled extractions: 72 bar / 1,044 psi
  • Uncontrolled extractions (up to 7): uncontrolled extractions possible

Typical applications


Flexible condensing or back-pressure steam turbine

We deliver a standard steam turbine generator set including the SST-600 (with or without gearbox), a generator, oil system, piping and instrumentation and the control system. The standard package can be extended to include a condenser, condensing plant or pre-heating system. The SST-600 with its reliable and flexible design is available with axial or radial exhaust.


Mechanical Drive

The SST-600 is also an efficient and economic mechanical drive. Since the 1970s, hundreds of projects have been successfully implemented all over the world using the SST-600 to directly drive everything from the smallest boiler feedwater pump just as reliably as the largest compressor even in the most complex processes. The SST-600 complies with regulations including the API standard.

Technical data

  • Power output up to 200 MW   
  • Speed 3,000 to 18,000 rpm
  • Inlet pressure up to 165 bar / up to 2,393 psi
  • Inlet temperature up to 565 °C / up to 1,050 ° F
  • Exhaust steam parameters:
    Back pressure
     up to 80 bar / 1,160 psi 
    Condensing up to 1.0 bar / 15 psi
    District heating up to 3.0 bar / 43 psi
  • Controlled extractions:
  • Pressure, ext. valve up to 72 bar / 1,044 psi
    Pressure, int. valve up to 45 bar / 798 psi
    Temperature up to 480 °C / 895° F
  • Uncontrolled extractions (up to 6): up to 85 bar / 1,233 psi

Typical applications


Double exhaust flow steam turbine

The SST-500 is a single casing, double exhaust flow steam turbine, which can be used as an entire drive or as the lowpressure module of a multiple-casing turboset, directly driven or geared. This turbine, with its capacity to operate over a wide range of speed and power, is ideal for large steam  volume  flows.  Steam flows into the turbine via two tangential inlets to equalize thermal loading and blade stress.


Emergency stop valves and control valves are installed in the steam inlet pipes. The steam flows tangentially into the inner casing and then axially to both exhausts. The customized design of the steam path allows exact adjustment to surpass general physical limitations of the last stage blades. Double-end drive is available, if required, e.g. for booster pump drive.

Technical data

  • Power output up to 100 MW   
  • Speed up to 15,000 rpm
  • Inlet pressure up to 30 bar / up to 435 psi 
  • Inlet temperature up to 400 °C / up to 750 ° F
  • Exhaust steam parameters:
    District heating up to 1.5 bar / 21.75 psi
    Condensing up to 0.5 bar / 7.25 psi
  • Steam extraction: Uncontrolled (up to 2), various pressure levels

Typical applications


Industrial steam turbine

The SST-400 is a single casing steam turbine, providing  geared or direct drive to 50 and 60 Hz generators, or to compressors and pumps. The symmetrical casing with horizontal joint flange enables the SST-400 to accept short start-up times and rapid load changes.


The modular package design allows a wide variety of configurations to satisfy the customer’s individual needs in the most economical way. The utilization of selected proven components assures high reliability and easy maintenance.


The SST-400 can be equipped with upward, downward or axial exhaust to fit with the selected installation. The turbine skid can be combined with standardized gearbox , oil units and generators to a turboset, according to the customer’s needs.  The turbine skid and gearbox / oil unit are fully assembled in  the workshop before being shipped to the site. Our proven installation and maintenance  concept lowers maintenance cost by enabling easy access to the installed components, the turbine, gearbox, and generator.

Technical data

  • Power output up to 60 MW   
  • Speed 8,000 rpm
  • Inlet pressure up to 140 bar / up to 2,030 psi 
  • Inlet temperature up to 540 °C / up to 1,004 ° F
  • Exhaust steam parameters: 
    Back pressure 
    up to 25 bar / 363 psi
    up to 0.3 bar / 4.4 psi
  • Steam extraction
    Controlled (up to 4) 
    up to 45 bar / 510 psi
    up to 60 bar / 870 psi

Typical applications


Industrial steam turbine

The SST-300 is an optimal solution for a wide range of applications due to the implementation of the best technology combined with over 20 years of experience. In the last decade alone, this turbine has been installed in over 500 industrial and power applications by customers all over the world.


All components and auxiliaries including the lube oil system are mounted on a common base frame. The turbine can be configured with either an upward, downward or axial exhaust orientation depending on the layout of the plant.


The turbine can also accommodate multiple steam extraction / steam induction points as well. The compact design and simple layout of the turbine significantly reduce the cost and time associated with its construction, inspection and maintenance.

Technical data

  • Power output up to 45 MW  
  • Speed 12,000 rpm
  • Inlet pressure 140 bar / up to 2,030 psi
  • Inlet temperature 540 °C / up to 1,004 ° F
  • Exhaust steam parameters: 
    Back pressure 
    up to 16 bar / 232 psi
    up to 0.3 bar / 4.4 psi 
    District heating
     up to 3.0 bar / 43 psi
  • Controlled extractions (up to 2): Single or double, adaptive stage, nozzle control, throttle control 
    up to 25 bar / 362 psi
    400 °C / 752° F
  • Uncontrolled extractions (up to 6): up to 60 bar / 870 psi

Typical applications


Steam turbine for economical production of heat and power

The SST-200 is a single casing steam turbine provided in a packaged, skid-mounted configuration. It represents a solution based on long experience with both mechanical and generator drives and is characterized by ease of installation, facilitated by the modular package. The tailor-made, flexible steam turbine exactly fits to the customer needs.


The Siemens SST-200 industrial steam turbine product line is based on the reaction blade technology. The turbine series follows a modular product philosophy, ensuring a high level of performance and reliability. The ability to combine standardized casing modules enable optimal design flexibility. This allows the turbine series to achieve high performance in combination with an optimal cost position.



  • A high degree of standardization and lean specifications reduce the time to take the steam turbine in operation and provide easy maintenance. The combination of these factors lead Siemens to deliver a highly reliable products, with the short delivery times that suit this market segment. 
  • Implementation of the latest blading technology has led to efficiency improvements of up to 2% compared to previous turbine design.
  • Optimal total cost ownership due to standardized components, highest efficiency, and optimized maintenance concept.

Technical data

  • Power output: up to 20 MW
  • Inlet steam pressure: up to 120 bar (a) / 1,740 psi
  • Inlet steam temperature: up to 540º C / 1,004° F
  • Exhaust conditions:
    Water-cooled condenser: 0.05–0.15 bar (a)
    Air-cooled condenser: 0.15–0.50 bar (a)
    Backpressure turbines: 2–20 bar (a) 
    Uncontrolled extraction: 60 bar / 870 psi (up to 3)
    Controlled extraction: 16 bar / 230 psi

Typical applications

Stand-by heating system

When it is a bit cold

One of our key service goals is to minimize system downtime and resulting productivity losses


Our stand-by heating system maintains the turbine at a high temperature during standstills and thereby greatly reduces the start-up time. Keeping the steam turbine generator units warm increases the remaining service time for the most important components, such as the turbine casing and the rotor.

Upgrades for steam turbines
Technical data | Industrial steam turbines

Everything at a glance

*single or double, adaptive stage, nozzle control, throttle control 

*single or double, adaptive stage, nozzle control, throttle control 


Find out more about our products and services

In our download section, you can find brochures, technical papers, and more.


More than 20,000 steam turbines were delivered to sites all over the world within the past 100 years. Find below some chosen examples
Do you have a question regarding our products, solutions and services?

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