Cast Iron Boiler Economizer from China
A cast iron economizer designed to recover waste heat from boiler flue gases to preheat feedwater, improving overall boiler efficiency. It is classified under HTS 8404.10.00.10 as auxiliary plant specifically for use with boilers of headings 8402 or 8403. This heat exchanger mounts directly on the boiler exhaust stack.
Duty Rate — China → United States
41%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Verify compatibility with specific boiler models from headings 8402/8403; require material certificates for cast iron construction; ensure pressure vessel compliance with ASME standards