ASTM A106 Grade B Seamless Pipe 4.5-inch OD 0.531-inch Wall from China
High-temperature service seamless pipe, 114.3 mm OD with 13.5 mm wall, non-alloy carbon steel per ASTM A106 specs. Fits HTS 7304.39.0032 precisely due to circular cross-section, OD range 38.1-114.3 mm, and wall over 12.7 mm. Essential for process piping in power plants and petrochemical facilities.
Duty Rate — China → United States
35%
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
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
Import Tips
• Submit heat analysis reports confirming carbon content <0.3% to prove non-alloy status
• Avoid bundling with fittings; sets may classify under 7307 as tube fittings rather than individual pipes
• Check for anti-dumping orders on specific grades/sources; Chinese A106 often under AD/CVD scrutiny