Percussion rock drill bits
Interchangeable tools for hand tools, whether or not power-operated, or for machine-tools (for example, for pressing, stamping, punching, tapping, threading, drilling, boring, broaching, milling, turning or screw driving), including dies for drawing or extruding metal, and rock drilling or earth boring tools. > Rock drilling or earth boring tools: > Other, including parts > Percussion rock drill bits
Duty Rate (from China)
Products classified under Tariff item 8207.19.00.50
Chrome-Moly Reaming Bit
A pilot reamer bit with chrome-moly alloy cutting teeth designed to enlarge rock boreholes in geothermal drilling. The alloyed cutting surface provides high strength and heat tolerance, making it suitable for demanding earth boring applications.
8207.19.00Chromium-Alloyed Core Drill Bit
A diamond-impregnated core barrel bit with a chromium-alloyed cutting matrix for sampling hard rock in geological surveys. The chromium enhances heat and wear resistance, making it effective for extended coring operations.
8207.19.00Chromium-V Shank Adapter Bit
A shank adapter with an integrated chromium-vanadium cutting nose for extension rock drilling. It bridges drill and extension rods, providing a durable cutting part for earth boring in mining and construction.
8207.19.00High-Chrome Rock Chisel Bit
A pneumatic jackhammer chisel with a high-chromium cutting tip for rock breaking in tunneling and demolition. The chromium alloy improves fracture resistance, making it suitable for heavy-duty earth boring operations.
8207.19.00High-Vanadium PDC Drill Bit
A polycrystalline diamond compact (PDC) drill bit with a vanadium-enhanced cutting edge for rock drilling in oil and gas exploration. The vanadium adds durability and wear resistance, making it effective in abrasive formations.
8207.19.00High-V Rotary Drag Bit
A drag-style rotary bit with high-vanadium steel blades for soft rock formations in water well drilling. The alloyed blades provide extended life in abrasive earth, and the low torque design improves drilling efficiency.
8207.19.00Molybdenum-Enhanced DTH Hammer Bit
A down-the-hole (DTH) hammer drill bit with molybdenum-alloyed tungsten carbide buttons for percussion drilling in quarrying. The alloy provides impact toughness, making it suitable for hard rock formations.
8207.19.00Molybdenum Rock Roller Cone
A single roller cone insert with molybdenum alloy for custom rock drilling assemblies. It is replaceable in tricone systems and designed for abrasive earth boring, providing durability in demanding conditions.
8207.19.00Moly-Vanadium Crosscut Bit
A cross-cut rock drill bit alloyed with molybdenum and vanadium for longwall mining. The alloy composition enhances penetration rates in coal measure rock, making it effective for underground mining operations.
8207.19.00Tungsten Carbide Tricone Drill Bit
A three-cone roller bit with tungsten carbide inserts for earth boring in mining and construction. The high-alloy cutting edges provide durability and wear resistance, making it suitable for hard rock formations.
8207.19.00Tungsten Heavy Duty Crown Bit
An impregnated crown bit with a tungsten matrix for ultra-hard rock coring in exploration drilling. The high tungsten content provides extreme durability, making it effective for demanding coring applications.
8207.19.00Tungsten-Tipped HDD Drill Head
A horizontal directional drilling (HDD) head with tungsten-alloyed cutters for underground utility boring through rock. The specialized cutting part is designed for soil and rock penetration, making it essential for trenchless construction.
8207.19.00Tungsten-V Alloyed Hole Opener
A rock hole opener with tungsten-vanadium alloyed wings for widening blast holes in quarries. The premium cutting metallurgy increases hole diameter efficiently, making it suitable for large-scale earth boring.
8207.19.00Vanadium Carbide Button Bit
A threaded button bit with vanadium-enhanced carbide inserts for top hammer rock drills in open-pit mining. The alloyed wear surfaces provide high impact resistance, making it effective in abrasive conditions.
8207.19.00Vanadium-Steel Auger Bit for Earth Boring
A helical auger drill bit made from high-vanadium steel for soil and soft rock boring in foundation work. The alloyed cutting edges provide extended life in abrasive earth, making it suitable for construction applications.