200*300*50 мм циферблат индикатора мраморное

Granite slab precision measuring tool and granite slab are made of high-quality "Jinan Blue" stone material through mechanical processing and manual fine grinding. Black gloss, precise structure, uniform texture, good stability, high strength, high hardness, granite slab can maintain high precision under heavy load and general temperature, and has no rust, acid and alkali resistance, abrasion resistance, and no The advantages of magnetization and invariance. Granite slabs are suitable for measuring tools in machinery factories.

When buying granite slab, we also need to buy some accessories for granite slab, such as: support for granite slab or jack, which is necessary for leveling granite slab.

Specific gravity of granite slab: 2970～3070kg/㎡, compressive strength: 245～254N/m㎡, strong wear capacity: 1.27～1.47N/m㎡, linear expansion coefficient: 4.6×10 ～6℃, water absorption rate: 0.13%, Shore strength: HS70 or above.

Characteristics and advantages of granite slab:
1. After long-term natural aging, the structure of the rock is uniform, the linear expansion coefficient is extremely small, the internal stress is completely disappeared, and there is no deformation, so the accuracy is high.

2. Good rigidity, high hardness and strong wear resistance.

3. It is not afraid of acid, alkali liquid corrosion, no rust, no need to apply oil, not easy to stick to dust, convenient and simple maintenance, and long service life.

4. There will be no scratches, and it is not blocked by constant temperature conditions, and the accuracy of temperature measurement can be maintained at room temperature.

5. It is not magnetized, can move smoothly during measurement, has no sense of stagnation, and is not affected by moisture. The plane is weighed well.