granite base
Specifications / Features
granite base by quality "Jinan green" stone by mechanical processing and manual fine grinding is made, gloss black, sophisticated structure, texture, uniformity, stability, strength, high hardness, maintain the high accuracy under the heavy load and temperature, and has no rust, acid and alkali resistance, wear resistance, magnetization, invariant advantages.granite base parameters:
Proportion: 2970-3070kg/m fand
Compressive strength: 245-254kg/m square meters
Elastic grinding quantity: 1.27-1.47N/m square meters
Linear expansion coefficient: 4.6 * 10 - 6/
Water absorption: 0.13%
Shore hardness HS70 above.
