S-Glass Roving for Aerospace Composites from Mexico
S-glass rovings offer higher strength than E-glass, used in aerospace structural composites like aircraft skins and rocket casings. Classified under HTS 7019.12.00 as continuous glass fiber rovings for advanced reinforcement applications.
Duty Rate — Mexico → United States
14.8%
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
• Provide tensile strength test certificates to distinguish S-glass from standard E-glass for proper valuation
• Ensure declaration of filament diameter and twist level (zero for rovings) to prevent reclassification
• Check for anti-dumping duties on specific glass fiber origins; maintain supply chain traceability