Descaling Powder for Metal from Mexico
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 — Mexico → United States
15%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Scale composition efficacy data confirms pickling preparation status
• Inhibitor package prevents base metal attack validation
• Dissolution rate testing for concentration instructions