S-Glass Roving for Aerospace Composites from Japan
S-glass roving features high-strength continuous glass filaments for aerospace structural composites like aircraft fuselages. Classified in HTS 7019.12.0080 as other rovings, it meets Chapter 70 definitions for glass fibers including fused silica variants. Superior modulus and fatigue resistance distinguish it from standard E-glass.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include tensile strength test data in documentation to substantiate S-glass classification versus commodity grades
• Declare exact filament count and sizing chemistry, as variations may affect duty treatment
• Watch for anti-dumping duties on certain Asian-origin S-glass products; check Commerce Department scopes