Descaling Powder for Metal from Canada
Blended powder of sulfamic acid, phosphates, and inhibitors for immersion descaling of heat exchanger tubes. Under HTS 3810.90.5000 as metal pickling preparation, dissolves calcium/magnesium scale without hydrogen embrittlement. Rinse to neutral pH.
Duty Rate — Canada → United States
15%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Scale composition efficacy data confirms pickling preparation status
• Inhibitor package prevents base metal attack validation
• Dissolution rate testing for concentration instructions