Seamless Boiler Tube SA-106 Grade B 14-inch OD 18mm WT from China
ASME SA-106 Grade B seamless carbon steel tube for high-temperature boiler service, 355.6 mm OD, 18 mm wall. Classifies in HTS 7304.39.0068 for seamless non-alloy steel pipes of circular cross section in the defined dimensions. Withstands extreme pressures in power plants.
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
• Supply ASME material certs; lack thereof risks classification as generic tube
• Specify 'other' vs pressure tube subheadings based on exact service intent
• Watch minimum wall tolerance; under 12.7 mm effective thickness reclassifies