A519 Grade 4140 Mechanical Tubing from China
ASTM A519 Grade 4140 seamless mechanical tubing, 88 mm OD with 10.2 mm wall, for machinery shafts. Classified HTS 7304.59.80.20: seamless alloy steel, circular, correct OD/wall specs. Heat-treated for high tensile strength applications.
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
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• ASTM A519 material cert proves mechanical tubing specs and seamless process
• Cold-drawn finish doesn't change classification from hot-finished tubes
• Shaft end-use keeps it as tube; not shaft until machined to final form