317L Stainless Steel Capillary Tubing
Ultra-thin welded capillary tubing of 317L stainless steel alloy with approx. 2.5% molybdenum and 11-14% nickel, wall <1.65 mm, for laboratory and instrumentation use. Its circular hollow profile provides superior resistance to pitting corrosion. Classified in 7306.40.1010 for welded stainless tubes meeting the nickel/molybdenum thresholds.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing 5% or more molybdenum
Higher Mo content (≥5%) moves to adjacent subheading 7306.40.1015 with potentially different rates.
If imported as finished heat exchanger parts
Tube assemblies for heat exchangers classify as parts of machinery under 8419, not raw tubes.
If non-circular cross-section
Square or rectangular profiles fall under 7306.60 or tube fittings in 7307.
Not sure which classification is right?
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Import Tips & Compliance
• Request supplier chemical analysis certificates; U.S
• Customs often tests Mo content randomly
• Label as 'capillary tubing' not 'wire' to prevent Chapter 72 misclassification
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