Custom Manufacturing Capabilities for Granite Straight Edges
We produce granite straight edges with lengths up to 2000 mm and precision levels of 0.001 mm (flatness, perpendicularity, parallelism). Crafted from Jinan Black Granite (also known as Taishan Black or “Jinan Qing” Granite), our products offer the following advantages:
- Ultra-High Precision:
- All parameters (flatness, perpendicularity, parallelism) are controlled within ±1 μm.
- Superior Material Properties:
- Jinan Black Granite boasts a fine natural grain structure and a hardness exceeding HS70.
- Exceptional Thermal Stability:
- Linear expansion coefficient of 4.6 × 10⁻⁶ /°C, ensuring minimal dimensional changes under temperature fluctuations.
Contact Us:
For detailed technical specifications or customized solutions, please contact our Precision Measurement Division.