High Precision Granite Inspection Surface Plates

We are the leading manufacturer of Granite Surface Plates, providing high accuracy and quality products as below:

Product Speciality:

1. Made of high quality Jinan Black Granite.

2. High precision and high stability.

3. No rust and anticorrosion.

4. Non magnetization.

5. Good abrasion resistance.

Physical Property of Jinan Black Granite:

Specific Gravity: 3.07 g/cm3

Shore Hardness: > 70Hs-80Hs

Tensile strength: 211Kg/cm2

Compressive Strength: 245-254Mpa

Linear Expansion Coefficient: 4.61´10--6/°C

Elastic Modulus: 30-50Gpa

Water Absorptivity: ≤0.13%

Product Application:

Mainly used to produce and inspection of precision instrument, precision tool, mechanical component in modern industry and scientific research institutes.

We are able to manufacture the Granite Surface Plate with the good and stable flatness according to standard of DIN/JIS/GB. and Provided with Supporting Stand.