Mud Pump Piston Assembly from Mexico
Replacement piston assembly designed specifically for mud pumps used in oil and gas drilling rigs under heading 8428. It handles high-pressure abrasive drilling fluids to circulate mud during borehole excavation. Classified under 8431.39.0050 as a part solely for oil and gas field machinery of 8428.
Duty Rate — Mexico → United States
15%
Rate breakdown
9903.82.1015%Except as provided for in headings 9903.82.12, 9903.82.17 and 9903.85.68, derivative aluminum and steel articles with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 15 percent, as provided for in subdivision (f) of U.S. note 16 to this subchapter
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Verify compatibility with specific mud pump models from heading 8428; provide drilling rig end-use certification to avoid reclassification
• Common pitfall: missing API standards documentation leading to delays