Carbon Steel Heat Exchanger Tube OD 168mm WT 9mm from Japan
Seamless carbon steel tube designed for heat exchangers in petrochemical plants, OD 168 mm (6-inch nominal), wall thickness 9 mm. Fits HTS 7304.39.0036 as seamless nonalloy steel tube with circular cross section, specified OD range, and thin wall. Enhanced for corrosion resistance in heat transfer applications.
Duty Rate — Japan → United States
10%
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
Import Tips
• Specify if plain end or U-bent; U-bends may require different classification if extensively formed
• Include hydrostatic test pressure ratings in documentation for pressure tube verification
• Confirm carbon steel chemistry (C ≤ 0.3%) to maintain nonalloy classification