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%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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