granite components

1.products that directly out of factory 2.All of ourmeasuring tools and components are made of high quality "jinanqin"granite

High precision  grantie components

 

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 Hs70.

 

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 edges which  might influence its measuring precision.

5.nonmagnetization.

6.gloosy surface without sluggishness when the workplaces or tools are moving on it .

   

Our main products are granite inspection tables, squares, straight edges, square rulers, parallels,V-blocks, and granite components for high precision equipment such as granite bases and guide rails.

Our machinery equipment  can  also  finish the process of drilling holes, having slot and bonding inserts according to customers' requirements.

Our granite surface table is calibrated according to JB/T7975-1999 and JJG117-91 standards and have  passed the ISO9000. 

we can also make the granite measuring tools according to different  countries' standard.

 

granite components