Granite Measurement

Granite Measurement

granite measurement Description: 1. Adopting high quality “Black Jinan Granite” , which is Chinese best granite, granite surface plate is manufactured by mechanical processing, lapping and polishing. 2. It doesn't only own the advantages of black gloss, precise construction, and outstanding...

Product Details

granite measurement

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Description:

1. Adopting high quality “Black Jinan Granite” , which is Chinese best granite, granite surface plate  is manufactured by mechanical processing, lapping and polishing.

2. It doesn't only own the advantages of black gloss, precise construction, and outstanding characters--nice stability, high strength and hardness, etc. But also it is no rust, acid&alkali-proof, no magnetization, nice abrasion resistance and can keep stable at normal or high temperature.

3. The main mineral ingredients of granite are pyroxene,  anorthose, less olivine, black mica and less magnetite. Aging through hundreds of millions years, the granite can still retain even character, stable, high strength and hardness, and can keep high precision at heave duty. It is suitable for industrial production and measuring works at laboratory. 


Physical properties OF GRANITE   Surface Plate

Flatness tolerance

 000  level=1×(1+d/1000)um    

00  level=2×(1+d/1000)um
  0  level=4×(1+d/1000)um

1  Level=8×(1+d/1000)um

Materials

Black Jinan Granite

Type

200*200~8000*10000mm or customize

Proportion

2970-3070kg/㎡

Measuring Temperature:(20±0.5)℃

Compressive strength

245-254N/m

Shore hardness: >70



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