Accurate of Flatness meet 00 class precision granite plate.

Writer： admin Time：2020-11-18 22:19 Browse：℃

Accurate of Flatness meet 00 class precision granite plate. 00 class precision granite plate for inspection table top in workshop or lab. Black granite precision surface plate,  00 class precision surface plate with natural black, flatness ≤3um.
This black granite plate, flatness ≤3um, 00 class, its color is natural black.The dimension: 1200*800*50mm. Weight: 158.4kg, The granite plate made for optical inspection tabletop.
1. Density: 2790~3070 kg/m3;
2.Compressive strength: 1000~3000 kg/cm2;
3.Elastic modulus: 1.3~1.5×106 kg/cm3;
4.Water absorption: 0.13%;
5.Shore hardness:> HS 70;
6. Proportion: 2.6~2.75.