Fused Silica Investment Casting Shell Tubes from Mexico
Unworked fused quartz tubes used as drain/vent lines in ceramic shell investment casting molds for aerospace turbine blades. High-temperature stability prevents shell cracking. Classified 7002.31.00.00 as unworked fused silica tubes.
Duty Rate — Mexico → United States
10%
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
• Thermal expansion coefficient data matches investment casting requirements
• Multiple thin-wall diameters bundled shipment common—invoice separately