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Granite surface plate
140-001大理石平板
Granite surface plate
1.Made of granite, free from deterioration or dimensional change over time, minimal changes in dimension due to temperature changes
2.With certificate
3.Standard:GB498-85, d is the diagonal length of the plate, unit: mm
Grade 000: 1×（1+d/1000） μm
Grade 00: 2×（1+d/1000） μm
Grade 0: 4×（1+d/1000） μm
Grade 1: 8×（1+d/1000） μm
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SIZE (mm)
|
GRADE
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|||
|
000 Flatness（μm）
|
00 Flatness（μm）
|
0 Flatness（μm）
|
1 Flatness（μm）
|
|
| 300x200x50 |
1.5
|
3
|
5.5
|
11
|
| 300x300x70 |
1.5
|
3
|
5.5
|
11
|
| 400x250x70 |
1.5
|
3
|
6
|
12
|
| 400x400x70 |
2
|
3.5
|
6.5
|
13
|
| 630x400x100 |
2
|
3.5
|
7
|
14
|
| 630x630x100 |
2
|
4
|
8
|
16
|
| 800x500x130 |
2
|
4
|
8
|
16
|
| 1000x630x150 |
2.5
|
4.5
|
9
|
18
|
| 1000x750x150 |
2.5
|
4.5
|
9
|
18
|
| 1000x1000x150 |
2.5
|
5
|
10
|
20
|
| 1600x1000x200 |
3
|
6
|
12
|
24
|
| 2000x1000x200 |
3.5
|
6.5
|
13
|
26
|
| 2000x1600x250 |
3.5
|
7
|
14
|
28
|
| 2500x1600x300 |
4
|
8
|
16
|
32
|
| 3000x2600x400 |
4.5
|
9
|
18
|
36
|
| 3000x2000x500 |
5.5
|
11
|
22
|
44
|
