17-4PH Seamless Aerospace Duct Tube from China
Seamless 17-4PH precipitation hardening heat-resisting steel tube for aircraft engine ducting with thermal cycling resistance. Covered by HTS 7304.59.60.00 as circular seamless tubes of other heat-resisting alloy steel.
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
• AMS 5643 aerospace material specification mandatory for validation
• ITAR compliance essential; declare aerospace end-use on entry summary
• Solution annealed condition must be documented to prove heat treatment status