9-Inch Step Reamer for Tunnel Boring
Multi-step PDC reamer for enlarging pilot holes in tunnel boring machine operations through rock. HTS 8207.19.60.70 covers this as other rotary rock reamers. Provides staged diameter expansion for precise tunnel alignment.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If integral to tunnel boring machines
Other parts of boring machinery classify in heading 8430.
If base metal parts sold separately
Separate parts of rock drilling tools fall under 8207.90.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Detail step diameters and PDC gauge protection for customs rock tool confirmation
• TBM compatibility certificates prevent parts classification issues
Related Products under HTS 8207.19.60.70
7-Inch Hybrid Core Bit
Hybrid bit combining PDC and diamond impregnation for directional rock coring in HDD applications. Falls under HTS 8207.19.60.70 as other rotary core bits for rock. Balances steerability and penetration rate.
11-Inch Exploration Reamer
Heavy-duty reamer for mineral exploration hole enlargement in diamond drilling programs. HTS 8207.19.60.70 for other rotary rock reamers. Carbide-reinforced wings prevent deviation.
5-Inch Water Well Rock Bit
Button bit for rotary drilling through overburden into bedrock for water wells. Classified HTS 8207.19.60.70 as rotary rock core bit. Air-cooled design for deep hole stability.
13-Inch Blast Hole Reamer
Large diameter reamer for final sizing blast holes in quarry operations. HTS 8207.19.60.70 other rotary rock reamers. Eccentric design for overgauge drilling.
12-Inch Diamond Impregnated Core Bit
A rotary core bit with diamond-impregnated segments designed for drilling into hard rock formations like granite or basalt. It falls under HTS 8207.19.60.70 as an other rotary rock drill bit used in geological exploration and mining. The bit attaches to core drilling rigs for extracting cylindrical rock samples.
8.5-Inch PDC Reamer for Hard Rock
A polycrystalline diamond compact (PDC) reamer used to enlarge holes in hard rock during oil and gas exploration drilling. Classified under HTS 8207.19.60.70 as an other rotary rock drill reamer, not core bits. It features PDC cutters for improved durability in abrasive rock environments.