2710.20.10.50/Heavy Fuel Oil No. 6 (Bunker C)/China

Heavy Fuel Oil No. 6 (Bunker C) from China

Heavy fuel oil No. 6, also known as Bunker C, is a high-viscosity residual fuel oil with a Saybolt Universal viscosity at 37.8°C exceeding 125 seconds and API gravity of 25 degrees or more, containing biodiesel as a blend component. It falls under HTS 2710.20.1050 as a distillate and residual fuel oil used primarily for marine bunkering and large industrial boilers. The biodiesel content ensures classification within this specific subheading for blended preparations.

Duty Rate — China → United States

25%

Rate breakdown

9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter

Calculate with your customs value Verify with the Tariff Assistant

Import Tips

• Verify Saybolt viscosity certification at 37.8°C exceeds 125 seconds and API gravity ≥25° using ISO/ASTM methods to confirm HTS 2710.20.1050 classification

• Provide lab analysis reports proving ≥70% petroleum oil content with biodiesel (mono-alkyl esters of fatty acids) to avoid reclassification as waste oils

• Ensure IMO-compliant sulfur content documentation for marine fuels to meet U.S

• EPA import regulations and prevent customs holds