Marine No. 4 Fuel Oil Low Sulfur Compliant
Low-sulfur No. 4 petroleum fuel oil for auxiliary marine engines, ≥25° A.P.I., 45-125 SUS viscosity, ≤500 ppm S to meet harbor regulations. Classified in HTS 2710.19.11.15 for its precise fuel oil parameters excluding biodiesel. Used in inland waterway vessels and port operations.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If viscosity >125 SUS at 37.8°C
Exceeds No. 4 limit, qualifying as No. 6-type residual fuel.
If <25° A.P.I. but still No. 4 viscosity
Gravity threshold separates lighter from heavier blends.
If formulated with >30% lubricants/additives
Lubricating prep dominance moves from fuel oils to 3403.
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Import Tips & Compliance
• Comply with MARPOL Annex VI bunker declarations; sulfur certs mandatory
• Document origin refinery specs to trace bituminous mineral oil content
Related Products under HTS 2710.19.11.15
Blended No. 4-Type Boiler Fuel Ultra Low S
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Power Plant No. 4 Distillate Fuel Low S
Distillate-heavy No. 4 fuel oil for power generation turbines, with A.P.I. ≥25°, viscosity 45-125 SUS at 37.8°C, sulfur ≤500 ppm. HTS 2710.19.11.15 due to matching subheading for low-sulfur No. 4-type oils. Optimized for peaking plants and backup generators.
No. 4 Fuel Oil Ultra-Low Sulfur
A medium-viscosity distillate fuel oil derived from petroleum refining, testing 25 degrees A.P.I. or more with Saybolt Universal viscosity at 37.8°C between 45 and 125 seconds, containing ≤500 ppm sulfur. Classified under HTS 2710.19.11.15 due to its specifications as a No. 4-type fuel oil for industrial heating and power generation. Used primarily in boilers and large burners where low sulfur reduces emissions.
Industrial No. 4 Heating Oil Low Sulfur
Petroleum-based No. 4 fuel oil for commercial heating systems, with ≥25° A.P.I., 45-125 SUS viscosity at 37.8°C, and sulfur ≤500 ppm. Falls under HTS 2710.19.11.15 as a distillate/residual blended fuel oil not elsewhere specified, excluding biodiesel or waste. Commonly used in manufacturing plants and district heating.