S-Glass Roving for Aerospace Composites from Canada
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 — Canada → United States
14.8%
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
• 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