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Steam turbines and other vapor turbines, and parts thereof: > Parts: > Of steam turbines: > 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 8406.90.45.80
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 8406.90.45.80 as a part of steam turbines, specifically under 'other' categories for non-leak-proof components. It features balanced blades and shaft for efficient energy transfer in power generation applications.
Steam Turbine Blade Set
A set of forged or cast blades optimized for steam flow in axial or radial steam turbines, typically made from nickel-based superalloys. Falls under HTS 8406.90.45.80 as 'other' parts of steam turbines, excluding diaphragms and leak-proof parts. Essential for energy extraction stages in industrial and utility turbines.
Steam Turbine Casing Section
Segmented high-pressure casing section forged from alloy steel to contain steam flow and support internal components in steam turbines. Under HTS 8406.90.45.80 as other parts, distinct from complete turbines or specified sub-parts. Critical for maintaining pressure integrity in power plant operations.
Steam Turbine Nozzle Ring
Annular assembly of stationary nozzles directing high-velocity steam onto turbine blades for impulse extraction. Made from heat-resistant castings, under HTS 8406.90.45.80 as other steam turbine parts. Key component in high-pressure and intermediate-pressure turbine stages.
Steam Turbine Exhaust Hood
Large fabricated structure collecting low-pressure exhaust steam from final turbine stages, directing to condenser. Heavy steel plate construction with insulation mounts, under HTS 8406.90.45.80 other parts. Essential for condensing cycle efficiency in power plants.
Steam Turbine Journal Bearing
Hydrodynamic tilting pad journal bearing supporting turbine rotor with forced lubrication system for high-load capacity. Specialized babbitt-lined pads, HTS 8406.90.45.80 as other steam turbine parts. Critical for rotor stability at supercritical speeds.
Steam Turbine Control Linkage
Precision linkage system connecting governor to steam admission valves for throttle control. High-strength alloy rods and pivots, under HTS 8406.90.45.80 other parts. Ensures reliable speed governing in automatic turbine operation.
Steam Turbine Support Bracket
Heavy-duty machined brackets mounting turbine casing to foundation, with alignment slots and vibration isolation. Stress-relieved castings, HTS 8406.90.45.80 as other parts. Designed for seismic zones and high thermal expansion.
Steam Turbine Baffle Plate
Perforated plates directing steam flow and reducing moisture carryover in low-pressure turbine sections. Corrosion-resistant stainless steel, under HTS 8406.90.45.80 other parts. Improves blade erosion protection and efficiency.
Steam Turbine Turning Gear
Low-speed motor-driven gear system rotating turbine rotor during cooldown and startup to prevent rotor sag. Pinion and bull gear assembly, HTS 8406.90.45.80 other parts. Prevents thermal bowing in large utility turbines.
Steam Turbine Drain Pot
Accumulation chamber collecting condensate from steam lines before turbine entry, with automatic drain valves. Pressure-rated vessel, under HTS 8406.90.45.80 other parts. Prevents water hammer and blade damage during startup.
Steam Turbine Bearing Housing
Machined housing that supports journal or thrust bearings in steam turbine assemblies, designed to withstand high temperatures and vibrations. Classified in HTS 8406.90.45.80 as other steam turbine parts, not specifically leak-proof or diaphragms. Used in both stationary and marine steam turbine installations.
Steam Turbine Shaft Coupling
Flexible or rigid coupling connecting turbine rotor to driven equipment like generators or pumps, precision-machined for alignment. HTS 8406.90.45.80 covers it as other steam turbine parts for power transmission interface. Vital for marine propulsion and industrial steam systems.
Steam Turbine Valve Actuator
Hydraulic or pneumatic actuator controlling steam admission valves in turbine governor systems for speed regulation. Classified under HTS 8406.90.45.80 as other parts integral to steam turbine operation. Ensures precise load response in utility-scale power generation.
Steam Turbine Labyrinth Seal
Non-contact seal with interlocking teeth preventing steam leakage between rotating and stationary turbine parts. Precision-machined from hard alloys, HTS 8406.90.45.80 as other parts (not leak-proof packing). Reduces efficiency losses in high-speed turbine environments.