Self-Propelled TBM Shielded Cutter from Japan
A self-propelled tunnel boring machine segment with shielded disc cutters for mixed ground mineral tunneling. Falls under HTS 8430.31.0080 as other self-propelled tunneling machinery. Designed for ore body access tunnels.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Segment shipments by tunnel diameter specs for accurate duty calculation
• Pre-qualify thrust bearing imports under separate machinery headings if applicable
• Avoid reclassification by including ground pressure test data proving tunneling design