Precision Welded Alloy Steel Tube for Heat Exchangers from China
High-precision welded tube from 4130 alloy steel, 16mm OD, 1.3mm wall thickness, used in compact heat exchanger coils for HVAC systems. Falls under 7306.50.10.00 for its welded, circular, thin-walled alloy steel construction. Enables efficient thermal transfer in space-constrained 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
• Supply hydrostatic test reports proving pressure capability for thin walls
• Declare exact alloy grade (e.g
• A335 P11) for accurate duty assessment
• Separate from finned assemblies to maintain tube classification