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Steam turbines and other vapor turbines, and parts thereof: > Parts: > Other: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 8406.90.75.00
Steam Turbine Rotor Assembly
A precision-engineered rotor assembly designed for high-speed rotation within steam turbines to convert thermal energy into mechanical power. Classified under HTS 8406.90.75.00 as a part of steam or vapor turbines, specifically under 'other' parts not covered by more specific subheadings. It features balanced blades and shaft for efficient energy transfer in power generation applications.
Vapor Turbine Blade Set
A set of aerodynamic blades crafted from high-temperature alloys for installation in vapor turbines, optimizing steam flow and energy extraction. Falls under HTS 8406.90.75.00 as 'other' parts of steam or vapor turbines, distinct from rotors or casings. Essential for industrial power plants and marine propulsion systems.
Steam Turbine Bearing Housing
A robust housing unit that encases and supports bearings in steam turbines, ensuring alignment and vibration control during operation. Classified in HTS 8406.90.75.00 as other parts of steam or vapor turbines. Critical for maintaining turbine efficiency in utility-scale power generation.
Turbine Diaphragm Staging
Modular diaphragm stages that direct steam flow between turbine blade rows, enhancing efficiency in multi-stage vapor turbines. Under HTS 8406.90.75.00 as other turbine parts, not specified elsewhere. Used in combined cycle power plants.
Vapor Turbine Nozzle Ring
A circumferential ring of precision nozzles that accelerate vapor onto turbine blades for optimal impulse reaction. HTS 8406.90.75.00 covers it as other parts of vapor turbines. Vital for high-pressure industrial applications.
Steam Turbine Gland Seal Assembly
Labyrinth or brush seal assemblies that minimize steam leakage at turbine shaft penetrations, preserving efficiency. Classified under HTS 8406.90.75.00 as other turbine parts. Common in large utility steam turbines.
Turbine Coupling Adapter
Specialized adapter connecting turbine rotor to driven equipment like generators, accommodating misalignment. HTS 8406.90.75.00 for other vapor turbine parts. Used in cogeneration plants.
Vapor Turbine Exhaust Diffuser
Conical diffuser recovering kinetic energy from exhaust vapor, reducing backpressure on turbine stages. Under HTS 8406.90.75.00 as other parts. Optimizes low-pressure turbine performance.
Steam Turbine Trip Valve Block
Manifold block housing emergency trip valves that rapidly isolate steam supply for safety shutdowns. HTS 8406.90.75.00 covers other steam turbine parts. Mandatory for high-capacity units.
Turbine Blade Carrier Disc
Forged disc that holds turbine blades in circumferential slots, transmitting torque to shaft. Classified HTS 8406.90.75.00 other parts. High-stress component in reaction turbines.