China high precision granite machinery components are made of high quality Black Jinan Granite,they are made by mechanical processing and handmade fine grinding. Granite components show black luster, the structure is precise, the texture is uniform, the stability is good, high strength, high hardness, the marble components can maintain high precision in heavy load and general temperature, and can be anti-rust, acid and alkali resistance, wear resistance, no magnetization.
A.The granite is after a long-term natural aging, the organizational structure is uniform, the expansion coefficient is small, the internal stress completely disappeared, as a result of which the precision is very high.
B.Good rigidity, high hardness, strong wear resistance.
C.Not afraid of acid and alkali corrosion, will not rust; do not need oiling, easy to maintain, long service life.
D. Will not scratch, will not limited by the constant temperature conditions, and can maintain the measurement precision at room temperature.
E.Will not be magnetized, and can move smoothly while measuring, no tight feeling, free of the affect of moisture, good flatness.
We can finish your products within 25 days.