Quality precision square granite square Block feet made in China
Quality precision square granite square Block feet made in China
Granite Square Ruler
Product Speciality:
1. Made of high quality Jinanqing Natural Granite Stone
2. High precision and high stability.
3. No rust and anticorrosion.
4. Non magnetization.
5. Good abrasion resistance.
Physical Property of Jinan Black Granite:
S.G: 2970-3070kgs/m 3
Compressive strength: 245-254N/mm 2
Elastic modulus: 1.27-1.47N/mm 2
Lindar expansion coefficient: 4.61 × 10 -6 /°C
Water absorptivity: <0.13%
Shore scleroscope hardness: more than Hs70
Product Application:
Mainly used as installation and inspection of machine tools, inspect vertical degree,
parallelism and straightness of guides and precision component in modern industry
and scientific research institutes.
We are also able to manufacture the Granite Surface Plate with the good and stable
flatness according to standard of DIN/JIS/GB
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Typemm)
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Squareness between
measuring surface and datum surface |
Flatness and straightness
of measuring surface |
Flatness and straightness
of datumsurface |
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Precision Grade (μm)
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||||||
|
00
|
0
|
00
|
0
|
00
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0
|
|
|
200*200*50
|
2
|
4
|
1
|
1
|
1
|
1
|
|
300*300*50
|
2
|
4
|
1
|
2
|
1
|
1
|
|
400*400*50
|
2.5
|
5
|
1
|
2
|
1
|
2
|
|
500*500*50
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3.5
|
7
|
1
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2.5
|
1
|
2
|
|
600*600*60
|
4.5
|
9
|
1.5
|
3
|
1
|
2.5
|
|
800*800*70
|
6
|
12
|
2.5
|
5
|
1.5
|
5
|
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
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- Step 4Set up meeting with the Chinese supplier without language barrier