Diamond grit size - Zhongtu Superhard Material Co., Ltd

CHINA (GB/T-ISO)			JAPAN JIS4130-1982		FEPA-1997
Grit (GB/T)	Grit (ISO)	Size (μm)	Grit	Size (μm)	Grit	Size (μm)
16/18	20	1180/1000	16/18	1180/1000	D1180	1180/1000
18/20	22	1000/850	18/20	1000/850	D1001	1000/850
20/25	24	850/710	20/30	850/600	D851	850/710
25/30	30	710/600	20/30	850/600	D711	710/600
30/35	36	600/500	30/40	600/425	D601	600/500
35/40	40	500/425	30/40	600/425	D501	500/425
40/45	45	425/355	40/50	425/300	D425	425/355
45/50	50	355/300	40/50	425/300	D356	355/300
50/60	60	300/250	50/60	300/250	D301	300/250
60/70	70	250/212	60/80	250/180	D251	250/212
70/80	80	212/180	60/80	250/180	D213	212/180
80/100	90	180/150	80/100	180/150	D181	180/150
100/120	100	150/125	100/120	150/125	D151	150/125
120/140	120	125/106	120/140	125/106	D126	125/106
140/170	150	106/90	140/170	106/90	D107	106/90
170/200	150	90/75	170/200	90/75	D91	90/75
200/230	180	75/63	200/230	75/63	D76	75/63
230/270	240	63/53	230/270	63/53	D64	63/53
270/325	280	53/45	270/325	53/45	D54	53/45
325/400	320	45/38	325/400	45/38	D46	45/38
M36/54	W40	54/36	400#	37/34	M45	50/40
M22/36	W40	22/36	500#	34/28	M35	40/32
M20/30	W28	30/20	600#	28/24	M25	32/25
M12/22	W28	22/12	700#	24/20	M20	40/25
M10/20	W20	20/10	800#	20/14	M20A	30/25
M8/16		16/8	1000#	16/13	M20B	40/30
M8/12		12/8	-	-	-	-
M6/12	W14	12/6	1200#	10/13	D15	25/15
M5/10	W10	10/5	1500#	8/10	D15A	15/10
M4/8	W7	8/4	2000#	8/6	D15B	20/15
M3/6	W7	6/3	2500#	6/5	D15C	25/20
M2.5/5	W5	5/2.5	3000#	5/4	D7	10/5
M2/4	W5	4/2	4000#	4/3	D3	5/2
M1.5/3	W3	3/1.5	5000#	3/2	D1	2/1
M0/2	W1.5	2/0	8000#	2/1	D0.7	1/0.5
M0.5/1.5	W1	1.5/0.5	15000#	1/0	D0.25	0.5