Having a Saybolt Universal viscosity at 37.8˚C of more than 125 seconds (heavy fuel oils)
Petroleum oils and oils obtained from bituminous minerals, other than crude; preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations; waste oils: > Petroleum oils and oils obtained from bituminous minerals (other than crude) and preparations not elsewhere specified or included, containing by weight 70 percent or more of petroleum oils or of oils obtained from bituminous minerals, these oils being the basic constituents of the preparations, other than those containing biodiesel and other than waste oils: > Other: > Distillate and residual fuel oils (including blended fuel oils): > Testing 25 degrees A.P.I. or more > Having a Saybolt Universal viscosity at 37.8˚C of more than 125 seconds (heavy fuel oils)
Duty Rate (from China)
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)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2710.19.11.50
No. 6 Fuel Oil
No. 6 fuel oil is a heavy residual fuel oil derived from petroleum refining, characterized by a Saybolt Universal viscosity exceeding 125 seconds at 37.8°C and an API gravity of 25 degrees or more. It falls under HTS 2710.19.11.50 as a distillate and residual fuel oil used primarily for industrial heating and power generation. This classification applies to its high viscosity and petroleum oil content over 70%.
Bunker C Fuel Oil
Bunker C is a high-viscosity residual fuel oil from crude oil distillation, meeting HTS 2710.19.11.50 criteria with Saybolt viscosity >125 seconds at 37.8°C and API ≥25°. Primarily used as marine bunker fuel for large ships. Its classification reflects its role as a heavy fuel oil preparation with dominant petroleum content.
Heavy Fuel Oil HFO 380
HFO 380 is a standardized heavy fuel oil with viscosity >125 Saybolt seconds at 37.8°C (equivalent to ~380 cSt at 50°C) and API gravity ≥25°, classified under HTS 2710.19.11.50. Used in power plants and industrial boilers requiring pre-heating. Meets criteria as petroleum-based residual fuel over 70% oil content.
Industrial Boiler Heavy Fuel Oil
This heavy fuel oil for industrial boilers has Saybolt viscosity >125 seconds at 37.8°C, API ≥25°, fitting HTS 2710.19.11.50 as a residual petroleum fuel oil. Blended from vacuum residues, it's the basic constituent (>70%) in heating preparations. Used in manufacturing for steam generation.
Power Plant Residual Fuel Oil
Residual fuel oil for power plants meets HTS 2710.19.11.50 with >125 Saybolt viscosity at 37.8°C and ≥25° API, derived from bituminous mineral processing. Contains ≥70% petroleum oils as base, excluding biodiesel per notes. Essential for large-scale electricity generation.