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

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

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 — Japan → United States

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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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