Cold-Rolled 4130 Chrome-Moly Precision Tube from China
Seamless cold-rolled tube from 4130 chromium-molybdenum alloy steel, circular cross-section for aircraft structural components. Classified in HTS 7304.51.50 as 'other' cold-reduced seamless alloy steel tubes, excluding those for boilers or pressure vessels. High strength-to-weight ratio suits aerospace applications.
Duty Rate — China → United States
75%
Rate breakdown
9903.82.0250%Except as provided for in headings 9903.82.14, 9903.85.67 and 9903.85.68, articles of aluminum, of steel or of copper and derivative aluminum or steel articles, as provided for in subdivisions (c)(i)–(v) of U.S. note 16 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
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Obtain chemical analysis certificate proving chrome-moly alloy (e.g
• 0.8-1.1% Cr, 0.15-0.25% Mo)
• Avoid misclassification as hot-finished; cold-rolled surface finish is key evidence
• For sets with fittings, principal article rules may apply Chapter 73 but watch for set provisions