HTS code 9902.15.40 covers "Steam turbines, multi-stage, condensing type, direct drive, suitable for use with a generator, having an output of 27 MW or more but not over 40 MW, with an operating rotational speed more than 3500 RPM (provided for in subheading 8406.82.10) " under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.