Linear expansion coefficient: 4.6 × 10-6/℃ Water absorption rate: 0.13% Shore hardness above HS70. Accuracy of 000,00,0,1 level is the ideal tool for precision machining enterprises to mark and inspect.
Precision reference measuring tools made of natural stone materials are ideal reference planes for the inspection of instruments, precision tools and mechanical parts, especially for high-precision measurement.
The main mineral composition of granite is pyroxene, plagioclase, a small amount of olivine, biotite and trace magnetite, black color, precise structure, after millions of years of aging, uniform texture, good stability, high strength, high hardness, can maintain high precision under heavy load.
The main mineral composition of granite is pyroxene, plagioclase, a small amount of olivine, biotite and trace magnetite, black color, precise structure, after millions of years of aging, uniform texture, good stability, high strength, high hardness, can maintain high precision under heavy load.
The main mineral composition of granite is pyroxene, plagioclase, a small amount of olivine, biotite and trace magnetite, black color, precise structure, after millions of years of aging, uniform texture, good stability, high strength, high hardness, can maintain high precision under heavy load.
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