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Siemens SST-500 Steam Turbine Generator Set from Japan

A 50 MW industrial electric generating set powered by a Siemens SST-500 steam turbine, designed for reliable power generation in factories and power plants. It falls under HTS 8502.39.0040 as a complete generating set driven by a steam turbine, coupling the turbine directly to an AC generator. Used primarily for backup or primary power in industrial applications.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

Import Tips

Verify turbine power source documentation proving steam drive to avoid reclassification to gas or diesel sets

Include detailed specs on generator output (kW/MW) and turbine type in commercial invoice for customs valuation

Ensure compliance with EPA emissions standards; obtain CARB certification if destined for California markets