316L Stainless Steel Welded Tube 8-inch OD
Welded tube of 316L stainless steel with 203.2 mm outside diameter and 3.91 mm wall thickness, designed for marine and pharmaceutical applications due to enhanced molybdenum content. Classified under HTS 7306.40.50.90 as 'other' welded stainless steel circular tubes with specified dimensions. Meets criteria for non-alloyed or low-alloyed steel interpretations in stainless grades.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If outside diameter exceeds 406.4 mm
Welded stainless pipes over 16-inch OD move to 7306.40.70, separating larger structural tubes.
If made of alloy steel other than stainless
Non-stainless alloy steel welded tubes (e.g., chrome-moly) classified under 7306.30, based on steel type definitions.
If imported as parts of heat exchangers
If specifically for heat exchanger use and meeting principal use criteria, may shift to machinery parts in Chapter 84.
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Import Tips & Compliance
• Obtain ASTM A312 or A554 certification specifying welded construction and stainless grade to avoid reclassification as seamless
• Check for anti-dumping/countervailing duties (AD/CVD) on 316L pipes from producers in Taiwan, South Korea, or Vietnam
• Document exact wall thickness measurement method (ultrasonic) to prevent customs disputes over 1.65 mm threshold
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