Precision Granite Surface Plate

ZHHIMG® precision granite surface plates are engineered from premium black granite with a density of approximately 3100kg/m³, offering superior stability, high hardness, and outstanding physical properties that surpass many European and American black granites. With decades of expertise and strict adherence to international standards, ZHHIMG® has become a trusted name in the ultra-precision industry.
Key Features and Advantages

●  Exceptional Stability: Our black granite has extremely low thermal expansion, ensuring long-term dimensional stability even under varying temperatures.
●  Superior Accuracy: Surface flatness can reach nanometer-level tolerance, making it the essential reference base for calibration, measurement, and precision assembly.
●  High Wear Resistance: Unlike cast iron or marble alternatives, ZHHIMG® granite resists scratches, corrosion, and deformation, ensuring a long service life.
●  Non-Magnetic & Non-Rusting: Ideal for sensitive electronic and metrology applications, unaffected by magnetic interference or oxidation.
●  Rigorous Quality Control: Each plate is measured with advanced instruments such as WYLER electronic levels and Renishaw laser interferometers, traceable to national and international metrology institutes.