The core advantages of this granite surface plate lie in its ultra-high precision and durable performance. Adopting natural high-density granite raw materials mined from deep mountain ore deposits, it undergoes strict aging treatment for 6 months to eliminate internal stress, ensuring no deformation during long-term use. The working surface is processed by precision lapping technology, reaching Ra0.8μm surface roughness and 00-level flatness tolerance, which can meet the most stringent precision measurement requirements in the aerospace and precision electronics industries. It is equipped with a reinforced base structure to improve stability during use, and the surface is coated with a protective film to avoid scratches during transportation and storage, effectively extending the service life of the product.
Specifications of this granite surface plate include: material is natural jade granite with a density of 2.65g/cm³; hardness reaches HRC55; flatness tolerance conforms to 00-grade standard of GB/T 20489-2006; working surface size is 600mm (length) ×600mm (width), base thickness is 150mm; total weight is 25kg; it is equipped with 4 adjustable stainless steel support feet for convenient leveling during installation; packaging uses moisture-proof foam and reinforced wooden box to avoid damage during long-distance transportation, and each product is accompanied by a calibration certificate for traceable measurement.
This granite surface plate is mainly applicable to precision machining workshops, automobile manufacturing plants, aerospace component processing factories, mold processing centers, and metrology and inspection institutions. It can be used as a reference benchmark for flatness inspection of mechanical parts, matching use with three-coordinate measuring machines, and as a working platform for precision assembly of electronic components. It is also suitable for calibration and detection of various measuring tools such as dial indicators and height gauges, providing accurate dimensional reference for industrial quality control links to ensure the accuracy of subsequent processing and inspection work.
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