Tunneling Blast Igniter from Japan
Heavy-duty igniter for tunnel boring machine (TBM) face blasting in underground construction. Engineered for high-pressure environments, under HTS 3603.50.00.00.
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
• Specify methane-rated explosion-proof design for mine safety approval
• Coordinate with MSHA for underground facility imports
• Pressure test certificates mandatory for customs release