Thin-Wall 321 Stainless Steel Tubing
Welded 321 grade stainless steel tube with more than 0.5% nickel, circular cross-section, and wall thickness below 1.65 mm. This product matches 7306.40.1015 criteria for high-nickel, thin-walled welded stainless tubes, used in aerospace and heat exchanger applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If seamless 321 stainless steel variant
Seamless tubes of stainless steel are in heading 7304.
If nickel content ≤0.5%
Chemical composition threshold determines subheading within welded stainless.
If imported as heat exchanger tube bundles
Assembled heat exchangers classify as machinery parts in Chapter 84.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Include heat treatment records to prove weld integrity and alloy stability
• For aerospace end-use, prepare ITAR/EAR documentation alongside HTS filing
Related Products under HTS 7306.40.10.15
Precision Automotive Sensor Tubing
Welded stainless tube for oxygen sensors, thin wall <1.65 mm, nickel >0.5%, circular. Fits 7306.40.1015 as other qualifying stainless tube.
Electropolished Sanitary Tubing
Electropolished welded 316L tubing, <1.65 mm wall, high nickel, for dairy/biopharma. 7306.40.1015 classification despite surface finish.
Cryogenic Transfer Stainless Tubing
Welded thin-wall stainless for LNG/LOX transfer, >0.5% Ni, circular <1.65 mm. HTS 7306.40.1015 for material spec match.
Microbore Stainless Steel Tubing
0.010" ID microbore welded tubing, high nickel stainless, wall <1.65 mm circular. Classifies 7306.40.1015 despite small size.
Beverage Dispensing Stainless Line
Thin-wall welded stainless tubing for beer/coffee lines, circular, >0.5% Ni, <1.65 mm wall. HTS 7306.40.1015 for general welded stainless tubes.
316L Stainless Steel Capillary Tubing
Welded capillary tubing of 316L stainless steel containing over 0.5% nickel, with wall thickness less than 1.65 mm and circular cross-section. Classified under 7306.40.1015 for its thin walls and high-nickel stainless composition, used in laboratory and instrumentation applications.