Good stability, strength, high hardness, can maintain precision in heavy load.

     Our main products are all kinds of granite plates and granite pedestal. granite inspection tables, square chest, straight edges, square rulers, parallels, V-blocks, and granite components for high precision measuring tools such as granite bases and guide rails. eg: pedestal for three dimensional measuring machine,and pedestal for PCB equipment.

our product are mainly sold to Germany and Spain and Taiwan of China ,it received great popolarity of our customers ,and now ,we are coprate with qingdao qianshao LTD and the product was sold to japan with the Mitutoyo standard.

Our granite measuring tools and granite mechanical components are made of high quality “jinanqin”granite . due to their high precision ,long duration ,good stability and corrosion resistance ,they have been more and more widely used in products-inspection in the  mordern inderstrise,and such high tech areas as mechanical caerospace and scientific research .

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

high precision reliable stability resistance to deform and guaranteed accuracy under normal ambient temperature.No-rust and anticorrosion wear resistance long service life any working surface cutting or scratching dose not bring about rough “edges”which  might influence its measuring presicion.nonmagnetization.gloosy surface without sluggishness when the workplaces or tools are moving on it

We warmly welcome friends from all of the world to visit our website and our factory ,we will offer you the high quality product with compeitive price and our best sevice.hope this will be a start of our long term business cooperation that we called win-win

Granite Parallels