Fused Quartz Tubing for Laboratory Reactors from China
Unworked tubes made from fused quartz or fused silica, supplied in straight lengths without further processing beyond forming and annealing. These tubes are essential components in laboratory equipment like reactors and distillation apparatus due to their high thermal resistance and chemical inertness. Classified under HTS 7002.31.00.00 as unworked tubes of fused quartz or other fused silica.
Duty Rate — China → United States
37.5%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Verify material certification confirming fused quartz/silica composition (≥99.9% SiO2) to avoid reclassification as common glass
• Provide manufacturer specs showing unworked status (no cutting, grinding, or coatings beyond annealing) for customs clearance