- Contact Person : Ms. Yuan Sarah
- Company Name : Shandong Square Precision Machinery Co., Ltd.
- Tel : 86-635-3834777
- Fax : 86-635-3836333
- Address : Shandong,Liaocheng,Zhaozhaizi Private Industry Park,Gaotang County
- Country/Region : China
- Zip : 252800
marble flat scale
Specific granvity:2970-3070kg/m^3 Compression strength :245-254N/mm^2 Elastic modulus:1.27-1.47 N/mm^2 Shore hardness :>Hs70
physical properties of JiNan Black :Specific granvity:2970-3070kg/m^3
Compression strength :245-254N/mm^2
Elastic modulus:1.27-1.47 N/mm^2
Linear expansion coefficient:0.0000461%(4.61*10^-6)
Water absorbtivity<0.13%
Shore hardness :above Hs 70
Granite measuring tools have the following characteristics
1. high precision reliable stability resistance to deform and guaranteed accuracy under normal ambient temperature.
2. No-rust and anticorrosion
3. wear resistance long service life
4. any working surface cutting or scratching dose not bring about rough edgeswhich might influence its measuring presicion.
5. nonmagnetization.
6. gloosy surface without sluggishness when the workplaces or tools are moving on it
marble flat scale