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
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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