Sodium Metasilicate for Welding Flux from Mexico
High-purity sodium metasilicate powder used in welding flux formulations, falling under HTS 2839.11.00.00 as a commercial alkali silicate. It provides slag-forming and cleaning properties during welding.
Duty Rate — Mexico → United States
11.1%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify low impurity levels for flux applications
• Package in anti-caking bags for flux purity
• Avoid classification as flux mixture under 3810 by importing pure