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Granite Straight Edges
For inspecting the straightness and flatness.
Welcome to your special specifications.
Our granite measuring devices and granite mechanical components are made of high qualityJinan Black granite.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 mechanical aerospace 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 "TAI GOLD STONE"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.
|
TYPE(mm) |
Flatness of working surfaceparallelism of opposite surface |
squareness between working surfaces |
Squareness between working surface and side surface |
|||
Precision grade | ||||||
00 |
0 |
00 |
0 |
00 |
0 |
|
400x60x25 |
1.6 |
2.6 |
2.4 |
3.9 |
8.0 |
13 |
630x100x35 |
2.1 |
3.5 |
3.2 |
5.3 |
10.5 |
18 |
1000x160x50 |
3.0 |
5.0 |
4.5 |
7.5 |
15 |
25 |
1600x250x80 |
4.4 |
7.4 |
6.6 |
11.1 |
22 |
37 |
2000x300x100 |
5.4 |
9.0 |
8.1 |
13.5 |
27 |
45 |
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