Diamond abrasive mesh size comparison chart,FEPA,US,Russia,Japan,China
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Diamond Grain Mesh Size/Grit Size Comparison Chart ,US,FEPA,Russia,Japan,China

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International Standard

FEPA

USA

JAPAN

Theoretical Basic Size

RUSSIA

GB/T6406-1995

ISO

ANSI B74.16-1971

JIS4130-1998

9206-80

Grain No. Grain Size Grain No. Grain No. Grain Size Grain No. Grain Size Grain No. Grain Size Grain No. Grain Size Inch Millimeter Grain No. Grain Size

40/50

425/300

427

40/50

425/300

B/427

355/300

40/50

425/300

40/50

425/300

0.015 0.378

500/400

500/400

50/60

300/250

301

50/60

300/250

B/301

300/250

50/60

300/250

50/60

300/250

0.011 0.288

400/315

400/315

60/80

250/180

252

60/80

250/180

B/252

250/180

60/80

250/180

60/80

250/180

0.009

0.226

250/200

250/200

80/100

180/150

181

80/100

180/150

B/181

180/150

80/100

180/150

80/100

180/150

0.0069

0.174

200/160

200/160

100/120

150/125

151

100/120

150/125

B/151

150/125

100/120

150/125

100/120

150/125

0.0058

0.148

160/125

160/125

120/140

125/106

126

120/140

125/106

B/126

125/106

120/140

125/106

120/140

125/106

0.0048

0.123

125/100

125/100

140/170

106/90

 107

140/170

106/90

 B/107

106/90

140/170

106/90

140/170

106/90

0.0041

0.103

100/80

100/80

170/200

90/75

91

170/200

90/75

B/91

90/75

170/200

90/75

170/200

90/75

0.0034

0.866

80/63

80/63

200/230

75/63

76

200/230

75/63

B/76

75/63

200/230

75/63

200/230

75/63

0.0030

0.075

63/50

63/50

230/270

63/53

64

230/270

63/53

B/64

63/53

230/270

63/53

230/270

63/53

0.0026

0.066

50/40

50/40

270/325

53/45

54

270/325

53/45

B/54

53/45

270/325

53/45

270/325

53/45

0.0022

0.057

325/400

45/38

46

325/400

45/38

B/46

45/38

325/400

45/38

325/400

45/38

0.0019

0.048

 
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