Of copper or copper alloys
Parts suitable for use solely or principally with the machinery of headings 8425 to 8430: > Of machinery of heading 8426, 8429 or 8430: > Other: > Other > Other: > Parts of coal or rock cutters and tunneling machinery: > Other: > Of copper or copper alloys
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 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8431.49.90.32
Copper Alloy Cutting Tip for Rock Cutter
A replaceable cutting tip made of copper alloy designed for use on rock cutting machinery in heading 8430. It provides enhanced wear resistance and heat dissipation during excavation operations. Classified under 8431.49.90.32 due to its composition of copper alloys and sole use as a part for rock cutters.
Bronze Wear Plate for Tunnel Boring Machine
A bronze wear plate used in tunnel boring machines (heading 8430) to reduce friction and protect structural components during tunneling. Its copper alloy construction offers superior corrosion resistance in harsh underground environments. Falls under HTS 8431.49.90.32 as a copper alloy part for tunneling machinery.
Copper Bushing for Coal Cutter Gearbox
Precision-machined copper bushing for the gearbox of coal cutting machines under heading 8430, providing low-friction bearing surfaces. The copper alloy material ensures durability in high-vibration mining conditions. Classified in 8431.49.90.32 for copper alloy parts of coal cutters.
Brass Hydraulic Fitting for Rock Cutter
Brass hydraulic connector fitting exclusively for hydraulic systems in rock cutting and tunneling machinery of heading 8430. Offers excellent corrosion resistance and pressure handling in abrasive environments. HTS 8431.49.90.32 applies due to copper alloy construction and dedicated use.
Phosphor Bronze Thrust Washer for Tunneler
Phosphor bronze thrust washer used in thrust bearings of tunnel boring machines (8430) to handle axial loads during operation. The alloy's self-lubricating properties suit dusty mining conditions. Fits 8431.49.90.32 as copper alloy part for tunneling machinery.
Copper Alloy Cutter Drum Segment
Segmented copper alloy insert for cutter drums on continuous mining rock cutters (8430), designed for impact and abrasion resistance. Enhances cutting efficiency in hard rock tunneling. Classified under 8431.49.90.32 for its copper alloy material and specific machinery use.
Bronze Cooling Sleeve for Coal Shearer
Bronze sleeve surrounding motor components in coal shearer machines (8430) to dissipate heat during prolonged underground operation. Copper alloy ensures thermal conductivity and strength. HTS 8431.49.90.32 for copper parts of coal cutters.
Copper Nozzle for Tunneling Water Jet
High-pressure water jet nozzle made of copper alloy for dust suppression and cutting assistance on tunneling machines (8430). Resists erosion from abrasive slurries. Classifies in 8431.49.90.32 as copper part for rock cutters.
Brass Gear Spacer for Rock Cutter Drive
Brass spacer ring maintaining gear alignment in drive systems of rock cutting machinery (8430). Provides precise tolerances and vibration damping. HTS 8431.49.90.32 due to copper alloy and principal use with tunneling equipment.
Phosphor Bronze Pivot Pin for Coal Cutter Arm
Phosphor bronze pin enabling articulated movement of cutting arms on coal mining shearers (8430). Alloy selected for fatigue resistance in cyclic loading. Classified 8431.49.90.32 as copper alloy part for coal cutters.