Duty Rate (from China)
Products classified under Tariff item 7325.91.00.90
Cast Iron Sag Mill Grinding Media Balls
Heavy-duty cast iron balls for SAG and AG mills, featuring domed surfaces for optimal cascading action. They are classified under this tariff item as cast articles of iron for grinding purposes in mills.
7325.91.00Chrome-Moly Cast Grinding Balls for Cement Mills
Chromium-molybdenum alloy cast balls optimized for cement clinker grinding in tube mills. Their cast structure and mill-specific design place them under this tariff item as cast grinding balls for mills.
7325.91.00Forged Alloy Steel Mill Grinding Balls
Although primarily cast, certain alloy steel balls are forged then heat-treated for superior toughness in overflow ball mills. If truly cast, they align with this tariff item as cast grinding articles for mills.
7325.91.00Heat-Treated Cast Steel Mill Balls 75mm
Uniform 75mm diameter cast steel balls, double heat-treated for maximum abrasion resistance in secondary grinding circuits. They are specifically classified under this tariff item as cast grinding balls for mills.
7325.91.00High Chrome Cast Iron Grinding Balls
Cast iron grinding balls with high chromium content, typically 10-18%, used in ball mills for grinding ores and minerals. They fall under this tariff item as cast articles of iron or steel specifically designed for mill grinding.
7325.91.00Low Chrome Cast Steel Grinding Balls
Cast steel balls with 1-10% chromium content, engineered for semi-autogenous grinding (SAG) mills in mining operations. They are classified under this tariff item due to their cast construction and specific use as mill grinding media.
7325.91.00Martensitic Cast Grinding Media for Coal Mills
Martensitic white iron cast balls for pulverizing coal in thermal power plants. This tariff item applies due to their cast construction and mill grinding purpose, engineered for low contamination in fuel processing.
7325.91.00White Cast Iron Grinding Pebbles for Mills
Elongated cast iron pebbles resembling balls, used interchangeably in rod mills for fine grinding. This tariff item includes 'similar articles' covering these non-spherical mill media with high hardness from white iron microstructure.