2024年3月6日发(作者：铎琬凝)
JB/T7990-1979
W0.5
W1
W1.5
W2.5
W3.5
W5
W7
W10
W14
W20
GB6966-86
0-0.05
0-1
0.5-1
0.5-1.5
0-2
1.5-3
2-4
2.5-5
3-6
4-8
5-10
6-12
8-12
10-20
JB/T7990-1998
M0/0.5
M0/1
M0.5/1
M0.5/1.5
M0/2
M1/2
M1.5/3
M2/4
M2.5/5
M3/6
M4/8
M5/10
M6/12
M8/12
M8/16
M10/20
QB/HH1801-04
0-0.25
0-0.5
0-1
0.5-1
0.5-1.5
0-2
1-2
0.5-3
1-3
1.5-3
2-3
2-4
2-5
3-6
3-7
4-8
4-9
5-10
5-12
6-12
7-14
8-16
8-20
10-20
对应目数
12000
10000
8000
7000
6000
5000
4000
3500
3000
2500
2200
2000
1800
1600
1500
1300
1200
W28
W40
12-22
20-30
22-36
36-54
M12/22
M20/30
M22/36
M36/54
12-22
12-25
15-25
20-30
22-36
30-40
30-50
36/54
40-60
50-70
54-80
1000
900
800
700
600
500
400
325
2024年3月6日发(作者：铎琬凝)
JB/T7990-1979
W0.5
W1
W1.5
W2.5
W3.5
W5
W7
W10
W14
W20
GB6966-86
0-0.05
0-1
0.5-1
0.5-1.5
0-2
1.5-3
2-4
2.5-5
3-6
4-8
5-10
6-12
8-12
10-20
JB/T7990-1998
M0/0.5
M0/1
M0.5/1
M0.5/1.5
M0/2
M1/2
M1.5/3
M2/4
M2.5/5
M3/6
M4/8
M5/10
M6/12
M8/12
M8/16
M10/20
QB/HH1801-04
0-0.25
0-0.5
0-1
0.5-1
0.5-1.5
0-2
1-2
0.5-3
1-3
1.5-3
2-3
2-4
2-5
3-6
3-7
4-8
4-9
5-10
5-12
6-12
7-14
8-16
8-20
10-20
对应目数
12000
10000
8000
7000
6000
5000
4000
3500
3000
2500
2200
2000
1800
1600
1500
1300
1200
W28
W40
12-22
20-30
22-36
36-54
M12/22
M20/30
M22/36
M36/54
12-22
12-25
15-25
20-30
22-36
30-40
30-50
36/54
40-60
50-70
54-80
1000
900
800
700
600
500
400
325