Commercial Heating No. 4 Fuel 0.05% S from Mexico
No. 4-type fuel oil with max 0.05% (500 ppm) sulfur for commercial building heating systems, API under 25°, 45-125 SUS viscosity, classified HTS 2710.19.06.05. Meets urban air quality standards for multi-burner installations.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Label with ASTM D396 grade designation; include pour point data for cold weather use
• Watch for anti-stripping additives affecting 'basic constituent' status