When it comes to precision engineering, the choice of granite material is critical. Every granite structure’s stability, durability, and accuracy depend on its mineral composition and density. At ZHHIMG®, we understand this better than anyone. As a global leader in precision granite manufacturing, ZHHIMG® uses carefully selected granite materials sourced from the best quarries to meet the diverse needs of ultra-precision industries.
ZHHIMG® Black Granite – Our Core Material
The primary material used in most ZHHIMG® products is ZHHIMG® Black Granite, a high-density natural stone with a density of approximately 3100 kg/m³. It features low thermal expansion, excellent wear resistance, and outstanding dimensional stability. Compared to common European or Indian black granite, ZHHIMG® black granite shows better hardness, less porosity, and higher vibration damping, making it ideal for precision machine bases, CMMs, and optical measurement systems.
Other Granite Grades for Specialized Applications
In addition to ZHHIMG® Black Granite, our engineers select other granite grades according to customer requirements and application environments:
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Fine-grained gray granite for large surface plates and calibration blocks
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Dark green granite for optical and metrology instruments requiring smooth surface finishes
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High-density black granite with low porosity for cleanroom and semiconductor assembly applications
Each type of granite is tested, aged, and verified to ensure that its physical properties meet international standards such as DIN 876, JIS B7513, and ASME B89.3.7.
Quality and Traceability
All granite materials used by ZHHIMG® are inspected using advanced testing equipment, including ultrasonic flaw detectors, hardness testers, and thermal expansion analyzers. Every block is accompanied by a traceable inspection report issued by certified metrology institutions. This ensures that every finished component delivers consistent accuracy and reliability, no matter its size or complexity.
Commitment to Precision
From raw material selection to final polishing, ZHHIMG® adheres to a simple philosophy —
The precision business can’t be too demanding.
By continuously optimizing granite sourcing and inspection standards, we ensure that each product reflects our brand values of Openness, Innovation, Integrity, and Unity.
Post time: Oct-16-2025