Fused Quartz Tubing for Laboratory Reactors from Mexico
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 — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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