JIS 20K
LTB
DRILLING DATA
JIS 20K
NOMINAL PIPE SIZE
OUTSIDE DIAMETER
THICKNESS OF FLANGE MIN
THINKNESS BLIND MIN
BOSSES LENGTH SOH,SWLJ
WELD NECK LENGTH
PITCH CIRCLE DIAMETER
NUMBER OF BOLT HOLES
BOLT HOLE DIAMETER
NOMINAL PIPE SIZE
MM
INCH
C
T
T1
L
L1
PCD
#
H
MM
INCH
10
3/8
90
14
14
20
33
65
4
15
10
3/8
15
1/2
95
14
14
20
34
70
4
15
15
1/2
20
3/4
100
16
16
22
36
75
4
15
20
3/4
25
1
125
16
16
24
38
90
4
19
25
1
32
1 1/4
135
18
18
26
41
100
4
19
32
1 1/4
40
1 1/2
140
18
18
26
41
105
4
19
40
1 1/2
50
2
155
18
18
26
42
120
8
19
50
2
65
2 1/2
175
20
20
30
48
140
8
19
65
2 1/2
80
3
200
22
22
34
51
160
8
23
80
3
90
3 1/2
210
24
24
36
54
170
8
23
90
3 1/2
100
4
225
24
24
36
58
185
8
23
100
4
125
5
270
26
26
40
64
225
8
25
125
5
150
6
305
28
28
42
73
260
12
25
150
6
200
8
350
30
30
46
77
305
12
25
200
8
250
10
430
34
34
52
87
380
12
27
250
10
300
12
480
36
36
56
94
430
16
27
300
12
350
14
540
40
40
62
110
480
16
33
350
14
400
16
605
46
46
70
123
540
16
33
400
16
450
18
675
48
48
78
134
605
20
33
450
18
500
20
730
50
50
84
136
660
20
33
500
20
550
22
795
52
52
90
143
720
20
39
550
22
600
24
845
54
56
96
149
770
24
39
600
24
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