Geothermal Water Well Drilling Machine from Japan
Specialized rig for drilling deep water wells for geothermal heat pump systems, using air rotary or mud rotary methods. Falls under HTS 8430.49.8040 as other water well boring equipment despite geothermal application. Designed for closed-loop groundwater heat exchange.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include geothermal certification or specs showing water circulation use; distinguish from oil/gas rigs; energy efficiency docs may qualify for exemptions