Granite Base for CMM from Canada
Precision-ground granite surface plate used as the stable base for coordinate-measuring machines (CMMs) under 9031.49.40. Its low thermal expansion and high rigidity ensure accurate 3D measurements by minimizing vibration and distortion. Classified under 9031.90.45.00 as a dedicated base component for these optical measuring instruments.
Duty Rate — Canada → United States
0%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Verify granite density and flatness certification meets CMM tolerances (typically <5μm/300mm) for customs valuation
• Include CMM model compatibility docs to avoid reclassification as general granite under 6802
• Check for anti-dumping duties on granite from specific countries like India or China