Salient Features :

Made from close-grained Granite having uniform color and texture having hardness between 5.6 to 7 on Moh's scale, sound and free from flaws fissures and large inclusions of softer minerals.
Made generally as per GB117-2015. Also available on request conforming to DIN-876-1972, BS-817-1988, JIS -B-7513 and US Federal specification GGG-P-463-C.
metallic threaded inserts, metallic T-slots, Plates with two or four ledges also can be supplied against specific request at extra cost.

 

Physical Property of Jinan Black Granite:

Specific Gravity: 3.03 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%

Application:

For inspection the coaxality cylindricity symmetry and shifting of revolution parts.

Main Features

1) the granite surface plate has Good wear resistance, strong and durable, long service life

2) No deformation, high hardness, no magnetization

3) Stable under heavy load and normal temperature

4) The surface is smooth and easy to clean and maintain.

5) Be hit by external force, won't appear easily Nick

Granite parallel gauge sometimes is substitute for the iron block and granite block which is with the same height.

Material: granite

Specification: 160x25x16-630x100x63mm or customize

Hardness of the working surface: HS70

Surface treatment: ground finish

Precision grade: 00-0

Packaging: plywood box