Cathodic Protection Rectifier from China
Transformer-rectifier unit for impressed current cathodic protection systems preventing corrosion on pipelines, ship hulls, and offshore platforms. Falls under HTS 8543.30.90.80 as specialized electrolysis apparatus generating protective DC current through sacrificial anodes. Automatically adjusts output based on pipeline potential monitoring.
Duty Rate — China → United States
40.1%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Include NACE corrosion control certifications and remote monitoring specifications in import docs
• Specify impressed current output ratings (10-100A) to distinguish from general rectifiers
• Ensure hazardous location (Class I Div 1) ratings for oil/gas pipeline applications