Microbore Stainless Steel Tubing
Microbore stainless steel tubing is a precision welded tube with an internal diameter of 0.010 inches and a circular cross-section, used in high-precision analytical and medical applications. It has a wall thickness of less than 1.65 mm and a high nickel content, qualifying it under tariff item 7306.40.00 for other welded stainless steel tubes. Despite its small size, it is classified as a tube and not as wire, as its cross-sectional dimensions exceed 16 mm in length.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | +50.0% | 50% |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the tubing is seamless rather than welded
Seamless stainless steel tubes of circular cross-section are classified under heading 7304.
If the tubing is imported as a part of a chromatography or analytical instrument
Parts of instruments of Chapter 90 may be classified under heading 9027.
If the tubing is imported with threaded fittings
Stainless steel tube fittings are classified under heading 7307.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify that the tubing's cross-sectional dimension exceeds 16 mm to avoid classification as wire under Chapter Note 2
• Keep technical datasheets showing the wall thickness and nickel content to support the classification
• If the tubing is used in medical devices, ensure compliance with Health Canada regulations
Related Products under Tariff item 7306.40.00
0.25 Inch OD 304 Stainless Steel Capillary Tubing
Ultra-thin welded 304 stainless capillary tube, 0.25 inch OD, 0.010 inch wall, for gas chromatography. Precision bore for analytical instruments. Falls under tariff item 7306.40.00 as a welded, circular cross-section tube of stainless steel.
17-4 PH Stainless Welded Aerospace Tubing
Precipitation hardened 17-4PH welded tube, 0.75 inch OD, 0.028 inch wall, for aircraft hydraulic lines. High strength-to-weight ratio. Classified under 7306.40.00 as a welded, circular cross-section tube of stainless steel.
1 Inch OD 304 Stainless Steel Instrumentation Tubing
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304L Stainless Decorative Handrail Tubing
#1 finish welded 304L tube, 1.5 inch OD, 0.065 inch wall, for architectural handrails. Mirror polish option available. Classified under 7306.40.00 as a welded, circular cross-section tube of stainless steel.
304 Stainless Steel Condenser Tubing
304 stainless steel condenser tubing is a welded thin-wall tube with a circular cross-section, used in heat exchanger condensers for HVAC systems. It has a wall thickness of less than 1.65 mm and is made from grade 304 stainless steel, qualifying it under tariff item 7306.40.00 for other welded stainless steel tubes. The tubing provides good corrosion resistance and thermal conductivity for efficient heat transfer.
304 Stainless Steel Fountain Pen Nib Tubing
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