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gradThe exact granite flat measures we manufacture are made of high-grade granites in Jinshan, Suzhou and natural black slender crystal granites in Jinan. Our products have the characteristics of high precision, good stability, resistance to abrasion and nondistortion. In the condition of normal temperature, the products can guarantee the requsts of high-precision measure.Besides,granites also have the characteristics of stainless,good resistance to acids and alkalis,and non-magnetization.The external nicks caused by carelessness in using and the protuberances or coarsenesses caused by collision will not influence the measuring percision.
gradThe percision grades of our products cover all he national standard grades. We can satisfy the requests of all kinds of users.
| Specific Gravity: | 2970-3070kg/m3 |
| Linear Expansion Coefficient: | 4.61×10-6/0C |
| Compressive Strenhth: | 245-254N/mm2 |
| Water Absorptivity: | <0.13% |
| Elastic Modulus: | 1.27-1.47N/mm2 |
| Shore Hardness: | Over HS70 |