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.
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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.
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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
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5-Inch Water Well Rock Bit
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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
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