Crystal Boule Diameter Grinding Roll from China
Heavy-duty cast steel roll for grinding semiconductor crystal boules to precise diameters prior to wafering, under 2,268 kg. HTS 8455.30.0035 covers this as cast steel rolls for mills in semiconductor material preparation. Achieves tolerances critical for wafer uniformity.
Duty Rate — China → United States
35%
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
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 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(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Import Tips
• Document grind wheel interface specs for process verification
• Avoid alloy misdeclaration; specify exact steel grade (e.g
• 4140 modified)
• Bundle with related equipment invoices for set classification consideration