Product Features:

Due to our product materials in origin, so to ensure that it has the lowest prices

Business Terms:

Port: qingdao

Minimum Order Quantity: 1 Piece/Pieces

Supply Ability: 100000 Piece/Pieces per Month

Payment Terms: L/C,T/T

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Specifications and Product Details:

Our granite measuring devices and granite mechanical components are made of high qualityJinan Blackgranite.Due to their high precision,long duration,good stability and corrosion resistance,they have been more and more used in product inspection of modern industy and such scientific areas as mechanicalaerospace and scientific researches.

Physical Property ofJi Nan BlackGranite:

Specific Gravity: 2970-3070kg/m³

Compressive Strength: 245-254Mpa

Elastic Modulus: 30-50Gpa

Linear Expansion Coefficient: 4.61x10^-6/⁰C

Water Absorptivity: ≤0.07

Shore Hardness: Above 70Hs

The "fz"brand of granite measuring tools have the following characteristics:

1 High precision reliable stability resistant to deform and guaranteed accuracy under normal ambient temperature.

2 No-rust and anticorrosion.

3 Wear resistance long service life.

4 Any cutting or scraching for working surface does not bring about roughedgeswhich might influence its measuring precision.

5 Non magnetization.

6 Glossy surface without sluggishness when the workpieces or tools are moving on it.

For inspecting machine spindle and else squareness work-pieces.

TYPE(mm)	Squareness between neasuring surface datum surface		Flatness& straightness of measuring surface		flatness& straightness of datum surface
	Precision grade(μm)
	00	0	00	0	00	0
100x63	1.5	3	1	1	1	1
160x100	2	4	1	2	1	1
250x160	2	4	1	2	1	2
400x250	3	6	1.5	3	1	2
630x400	4	8	2	4	1.5	3
1000x630	6	12	2.5	5	2	4