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Grit Size Conversion Chart
|
APPROXIMATE MESH SIZE
|
FEPA
|
MICRON
RANGE |
PCS. PER
CARAT |
SIZE IN
INCHES |
|
20/30
|
D851
|
600-800
|
97
|
0.033
|
|
30/40
|
D602
|
425-600
|
460
|
0.025
|
|
40/60
|
D427
|
250-425
|
1334
|
0.018
|
|
60/80
|
D251
|
181-250
|
10400
|
0.011
|
|
80/100
|
D181
|
151-181
|
17410
|
0.008
|
|
100/120
|
D151
|
127-151
|
20920
|
0.007
|
|
120/140
|
D128
|
107-127
|
49400
|
0.006
|
|
140/170
|
D107
|
90-107
|
83400
|
0.005
|
|
170/200
|
D91
|
75-90
|
140000
|
0.004
|
|
200/230
|
D76
|
63-75
|
252000
|
0.0035
|
|
230/270
|
D64
|
53-63
|
384000
|
0.003
|
|
270/325
|
D54
|
45-53
|
660000
|
0.002
|
|
325/400
|
D46
|
38-45
|
1130000
|
0.0017
|
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Gem Diamond Products
323 Adhyaru Industrial Estate, Sun Mill Compound, Lower Parel, Bombay 400 013, India.
Tel: + 91 - 22 - 2492 7823 Fax: + 91 - 22 - 2495 2706