Downcomer Pipe Section from Japan
Large-diameter pipe that circulates hot water from boiler drum to lower mud drum in water-tube steam boilers. Classified as HTS 8402.90.00.90 for its role in vapor generating systems.
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
• Specify seamless construction and pressure ratings matching boiler design codes
• Pair with riser pipe diagrams to show complete circulation system context