Alloy Steel Instrument Tubing from China
Precision seamless alloy steel tubing (e.g., 316L stainless alloy equivalent), wall <1 mm, for pressure/temperature instruments. Under 7304.90.70.00 for thin-wall seamless alloy profiles. Used in gauges, sensors, and control systems.
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
• Specify 'not for pressure piping' to avoid higher-rated line pipe categories
• Cleanliness certification needed for instrument use; contamination voids classification
• Micro-wall thicknesses require precise measurement protocols in documentation