HS Code for Grinding balls

Grinding balls are classified under HS code 7325.91 when they are manufactured as cast articles of iron or steel. Heading 7325 covers other cast articles of iron or steel that are not specified elsewhere in the nomenclature. Subheading 7325.91 is specifically dedicated to grinding balls and similar articles used in mills for crushing or grinding materials like ore, cement, or chemicals. The classification depends heavily on the manufacturing process; this code is strictly for cast products. These items are essential consumables in the mining and construction industries, designed to withstand high impact and abrasion within rotating ball mills or SAG mills.

Products Included

• Cast iron grinding balls for cement mills
• Cast steel grinding media for mineral processing
• Cylpebs (cylindrical grinding media) if cast
• Grinding balls for coal pulverization
• High-chrome cast iron grinding balls

Common Misclassification

A frequent point of confusion occurs between 7325.91 and 7326.11. While 7325.91 is for cast grinding balls, 7326.11 is the correct code for grinding balls that have been forged or stamped but not further worked. Importers must verify the production method (casting vs. forging) to avoid incorrect declarations. Additionally, parts of specific grinding machinery might sometimes be incorrectly classified under 8474.90; however, as grinding media are considered consumables rather than permanent machine parts, Chapter 73 is generally more appropriate.

FAQ

What is the HS code for grinding balls?

The HS code for cast iron or steel grinding balls is 7325.91, while forged versions are 7326.11.

Are ceramic grinding balls classified here?

No, ceramic grinding media are classified under Chapter 69, typically under 6909.12, as they are made of ceramic materials rather than iron or steel.