Rotary rock drill bits, core bits and reamers
Interchangeable tools for handtools, whether or not power operated, or for machine-tools (for example, for pressing, stamping, punching, tapping, threading, drilling, boring, broaching, milling, turning or screwdriving), including dies for drawing or extruding metal, and rock drilling or earth boring tools; base metal parts thereof: > Rock drilling or earth boring tools, and parts thereof: > Other, including parts: > With cutting part containing by weight over 0.2 percent of chromium, molybdenum, or tungsten or over 0.1 percent of vanadium > Other: > Rotary rock drill bits, core bits and reamers
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 8207.19.30.60
Impreg Diamond Rotary Rock Drill Bit
A rotary rock drill bit featuring impregnated synthetic diamonds in a tungsten carbide matrix for hard rock drilling in mining operations. It falls under HTS 8207.19.30.60 due to its classification as a rotary rock drill bit with cutting edges containing over 0.2% tungsten by weight. Designed for high-penetration rates in abrasive formations like quartzite.
11-1/4 Inch NQ Core Drill Bit
An NQ-size surface set diamond core bit with 11-1/4 inch diameter for geological core sampling in exploration drilling. Classified under HTS 8207.19.30.60 as a core bit with tungsten carbide gauge protection exceeding 0.2% tungsten content. Ideal for medium-hard rock formations in mineral prospecting.
Tungsten Carbide Matrix Core Reamer
A heavy-duty core reamer with tungsten carbide matrix body (over 0.2% tungsten) for enlarging pilot holes in hard rock tunneling projects. HTS 8207.19.30.60 applies due to its reamer design for rock boring with high-alloy cutting parts. Used in underground mining and civil engineering.
PDC Rotary Drag Bit for Hard Rock
Polycrystalline diamond compact (PDC) rotary drag bit with tungsten carbide backing for directional hard rock drilling in oilfield applications. Falls under HTS 8207.19.30.60 for rotary rock drill bits with over 0.2% tungsten content. Features multiple PDC cutters for enhanced durability.
8.5 Inch Tricone Rock Drill Bit
Tungsten carbide insert tricone rock drill bit (8-5 inches) with sealed bearings for rotary drilling in construction pile foundations. HTS 8207.19.30.60 due to high tungsten content in inserts exceeding 0.2% by weight. Suitable for soft to medium-hard formations.
HQ Diamond Impregnated Core Bit
HQ-size (3-7/8 inch) diamond impregnated core bit with tungsten carbide matrix for wireline coring in mineral exploration. Classified HTS 8207.19.30.60 for core bits with tungsten content over 0.2%. Optimized for fractured hard rock recovery.
Indexable Insert Rock Reamer
Heavy-duty rock reamer with indexable tungsten carbide inserts (over 0.2% tungsten) for enlarging blast holes in quarry operations. HTS 8207.19.30.60 as a reamer for earth boring with specified alloy content. Features quick-change insert system.
Step Reamer for Hard Rock Drilling
Multi-step tungsten carbide reamer for progressive hole enlargement in hard rock tunneling and raise boring. Falls under HTS 8207.19.30.60 due to rotary reamer design with molybdenum-enhanced carbide (over 0.2%). Used in underground construction.
9-7/8 Inch PDC Core Bit
9-7/8 inch PDC core bit with reinforced tungsten carbide gauge rings for oilfield coring in hard formations. HTS 8207.19.30.60 classification for core bits with high tungsten content. Features optimized hydraulics for chip evacuation.
Diamond Core Bit Crown Replacement
Replaceable diamond core bit crown with tungsten carbide matrix (over 0.2% tungsten) for field re-tipping of worn bits. Classified under HTS 8207.19.30.60 as core bit components with specified alloys. Extends bit life in remote drilling sites.
Underreamer with Tungsten Carbide Blades
Hydraulic underreamer with tungsten carbide blades (high molybdenum content) for enlarging wellbores in hard rock formations. HTS 8207.19.30.60 for rotary rock reamers with alloy specifications. Used in well completion operations.
12-1/4 Inch Sealed Bearing Tricone Bit
12-1/4 inch sealed bearing tricone bit with TCI (tungsten carbide insert) teeth for geothermal drilling in volcanic rock. Classified HTS 8207.19.30.60 due to tungsten content exceeding 0.2%. High-temperature grease formulation.
PQ Size Matrix Core Bit
PQ-size (4-3/4 inch) matrix core bit with premium tungsten carbide impregnation for deep mineral exploration drilling. HTS 8207.19.30.60 for high-tungsten core bits. Designed for maximum core recovery in abrasive formations.
High Torque Rotary Rock Bit
Heavy-duty rotary rock bit with chrome-moly tungsten carbide cutting structure (over 0.2% chromium and tungsten) for high-torque drilling rigs. Falls under HTS 8207.19.30.60 as specified alloy rotary drill bit. For large diameter blast hole drilling.
Vane Type Rock Reamer
Fixed vane tungsten carbide rock reamer with vanadium-enhanced cutting edges (over 0.1% V) for straight hole deviation correction. HTS 8207.19.30.60 classification for alloyed reamers in rock boring. Used in directional drilling programs.