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ANSI/API法兰标准
150磅级凸面法兰密封尺寸
公称通径(DN)
d
D
b
D1
D2
螺栓数量(n)
螺栓孔径(Φ)
螺栓直径(in)
mm
in
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
15
1/2
1/2
13
31/2
89
-
-
23/8
60.5
13/8
35
4
5/8
15
W1/2
20
3/4
3/4
19
37/8
98
-
-
23/4
70
111/16
43
4
5/8
15
W1/2
25
1
1
25
41/4
108
7/16
12
31/8
79.5
2
51
4
5/8
15
W1/2
32
11/4
11/4
32
45/8
117
1/2
13
31/2
89
21/2
64
4
5/8
15
W1/2
40
11/2
11/2
38
5
127
9/16
15
37/8
98.5
27/8
73
4
5/8
15
W1/2
50
2
2
51
6
152
5/8
16
43/4
120.5
35/8
92
4
3/4
19
W5/8
65
21/2
21/2
64
7
178
11/16
18
51/2
139.5
41/8
105
4
3/4
19
W5/8
80
3
3
76
71/2
190
3/4
19
6
152.5
5
127
4
3/4
19
W5/8
100
4
4
102
9
229
15/16
24
71/2
190.5
63/16
157
8
3/4
19
W5/8
125
5
5
127
10
254
15/16
24
81/2
216
75/16
186
8
7/8
22
W3/4
150
6
6
152
11
279
1
26
91/2
241.5
81/2
216
8
7/8
22
W3/4
200
8
8
203
131/2
243
11/8
29
113/4
298.5
105/8
270
8
7/8
22
W3/4
250
10
10
254
16
406
113/16
31
141/4
362
123/4
324
12
1
25
W7/8
300
12
12
305
19
483
11/4
32
17
432
15
381
12
1
25
W7/8
350
14
131/4
337
21
533
13/8
35
183/4
476
161/4
413
12
11/8
29
W1
400
16
151/4
387
231/2
597
17/16
37
211/4
540
181/2
470
16
11/8
29
W1
450
18
171/4
438
25
635
19/16
40
223/4
578
21
543
16
11/4
32
W11/8
500
20
191/4
489
271/2
699
111/16
43
25
635
23
584
20
11/4
32
W11/4
600
24
231/4
591
32
813
17/8
48
291/2
749.5
271/4
692
20
13/8
35
W11/4
300磅级凸面法兰密封尺寸
公称通径(DN/NPS)
d
D
b
D1
D2
螺栓数量(n)
螺栓孔径(Φ)
螺栓直径(in)
mm
in
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
15
1/2
1/2
13
33/4
95
9/16
15
25/8
66.5
13/8
35
4
5/8
15
W1/2
20
3/4
3/4
19
45/8
117
5/8
16
31/4
82.5
111/16
43
4
3/4
19
W5/8
25
1
1
25
47/8
124
11/16
18
31/2
89
2
51
4
3/4
19
W5/8
32
11/4
11/4
32
51/4
133
3/4
19
37/8
98.5
21/2
64
4
3/4
19
W5/8
40
11/2
11/2
38
61/8
156
13/16
21
41/2
114.5
27/8
73
4
7/8
22
W3/4
50
2
2
51
61/2
165
7/8
23
5
127
35/8
92
8
3/4
19
W5/8
65
21/2
21/2
64
71/2
190
1
26
57/8
149
41/8
105
8
7/8
22
W3/4
80
3
3
76
81/4
210
11/8
29
65/8
168.5
5
127
8
7/8
22
W3/4
100
4
4
102
10
254
11/4
32
77/8
200
63/16
157
8
7/8
22
W3/4
125
5
5
127
11
279
13/8
35
91/4
235
75/16
186
8
7/8
22
W3/4
150
6
6
152
121/2
318
17/16
37
105/8
270
81/2
216
12
7/8
22
W3/4
200
8
8
203
15
381
15/8
42
13
330
105/8
270
12
1
25
W7/8
250
10
10
254
171/2
445
17/8
48
151/4
387.5
123/4
324
16
11/8
29
W1
300
12
12
305
201/2
521
2
51
173/4
451
15
381
16
11/4
32
W11/8
350
14
131/4
337
23
584
21/8
54
201/4
514.5
161/4
413
20
11/4
32
W11/5
400
16
151/4
387
251/2
648
21/4
58
221/2
571.5
181/2
470
20
13/8
35
W11/4
450
18
17
432
28
711
23/8
61
243/4
628.5
21
543
24
13/8
35
W11/4
500
20
19
483
301/2
775
21/2
64
27
686
23
584
24
13/8
35
W11/4
600
24
23
584
36
914
23/4
70
32
813
271/4
692
24
15/8
41
W11/2
600磅级凸面法兰密封尺寸
公称通径(DN/NPS)
d
D
b
D1
D2
螺栓数量(n)
螺栓孔径(Φ)
螺栓直径(in)
mm
in
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
15
1/2
1/2
13
33/4
95
9/16
15
25/8
66.5
13/8
35
4
5/8
15
W1/2
20
3/4
3/4
19
45/8
118
5/8
16
31/4
82.5
111/16
43
4
3/4
19
W5/8
25
1
1
25
47/8
124
11/16
18
31/2
89
2
51
4
3/4
19
W5/8
32
11/4
11/4
32
51/4
133
13/16
21
37/8
98.5
21/2
64
4
3/4
19
W5/8
40
11/2
11/2
38
61/8
156
7/8
23
41/2
114.5
27/8
73
4
7/8
22
W3/4
50
2
2
51
61/2
165
1
26
5
127
35/8
92
8
3/4
19
W5/8
65
21/2
21/2
64
71/2
190
11/8
29
57/8
149
41/8
105
8
7/8
22
W3/4
80
3
3
76
81/4
210
11/4
32
65/8
168
5
127
8
7/8
22
W3/4
100
4
4
102
103/4
273
11/2
38
81/2
216
63/16
157
8
1
25
W7/8
125
5
5
127
13
330
13/4
45
101/2
266.5
75/16
186
8
11/8
29
W1
150
6
6
152
14
356
17/8
48
111/2
292
81/2
216
12
11/8
29
W1
200
8
77/8
200
161/2
419
13/16
56
133/4
349
105/8
270
12
11/4
32
W11/8
250
10
93/4
248
20
508
21/2
64
17
432
123/4
324
16
13/8
35
W11/4
300
12
113/4
298
22
559
25/8
67
191/4
489
15
381
20
13/8
35
W11/4
350
14
127/8
327
233/4
603
23/4
70
203/4
527
161/4
413
20
11/4
38
W13/8
400
16
143/4
375
27
686
3
77
233/4
603
181/2
470
20
15/8
41
W11/2
450
18
151/2
419
291/4
743
31/4
83
253/4
654
21
533
20
13/4
44
W15/8
500
20
181/4
464
32
813
31/2
89
281/2
724
23
584
24
13/4
44
W15/8
600
24
22
559
37
940
4
102
33
838
271/4
692
24
2
52
W17/8
900磅级凸面法兰密封尺寸
公称通径(DN/NPS)
P
E
F
R
K
N
螺栓直径(in)
mm
in
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
80
3
61/8
123.82
5/16
7.92
15/32
11.91
1/32
0.8
61/8
156
5/32
4
R11
100
4
71/8
149.22
5/16
7.92
15/32
11.91
1/32
0.8
71/8
181
5/32
4
37
125
5
81/2
180.98
5/16
7.92
15/32
11.91
1/32
0.8
81/2
216
5/32
4
41
150
6
91/2
211.12
5/16
7.92
15/32
11.91
1/32
0.8
91/2
241
5/32
4
45
200
8
121/8
269.88
5/16
7.92
15/32
11.91
1/32
0.8
121/8
308
5/32
4
49
250
10
141/4
323.85
5/16
7.92
15/32
11.91
1/32
0.8
141/4
362
5/32
4
53
300
12
161/2
381.00
5/16
7.92
15/32
11.91
1/32
0.8
161/2
419
5/32
4
57
350
14
183/8
419.00
7/16
11.13
21/32
16.66
1/16
1.5
183/8
467
5/32
4
62
400
16
205/8
469.90
7/16
11.13
21/32
16.66
1/16
1.5
205/8
524
5/32
4
66
450
18
233/8
533.40
1/2
12.70
25/32
19.84
1/16
1.5
233/8
594
3/16
5
70
500
20
251/2
584.20
1/2
12.70
25/32
19.84
1/16
1.5
251/2
684
3/16
5
74
600
24
303/8
692.15
5/8
15.88
11/16
26.97
3/32
2.4
303/8
772
7/32
6
78
1500磅级凸面法兰密封尺寸
公称通径(DN/NPS)
d
D
b
D1
D2
螺栓数量(n)
螺栓孔径(Φ)
螺栓直径(in)
mm
in
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
15
1/2
1/2
13
43/4
121
7/8
22.5
31/4
82.5
13/8
35
4
7/8
23
W3/4
20
3/4
11/16
17
51/8
130
1
25.5
31/2
88.9
111/16
43
4
7/8
23
W3/4
25
1
7/8
22
57/8
149
11/8
29.0
4
101.6
2
51
4
1
26
W7/8
32
11/4
11/8
28
61/4
159
11/8
29.0
43/8
111.1
21/2
64
4
1
26
W7/8
40
11/2
13/8
35
7
178
11/4
32.0
47/8
123.8
27/8
73
4
11/8
29
W1
50
2
17/8
47
81/2
216
11/2
38.5
61/2
165.1
35/8
92
8
1
26
W7/8
65
21/2
21/4
57
95/8
244
15/8
41.5
71/2
190.5
41/8
105
8
11/8
29
W1
80
3
23/4
70
101/2
267
17/8
48.0
8
203.2
5
127
8
11/4
32
W11/8
100
4
35/8
92
121/4
311
21/8
54.0
91/2
241.3
63/16
157
8
13/8
35
W11/4
125
5
43/8
111
143/4
375
37/8
73.5
111/2
292.1
75/16
186
8
15/8
42
W11/2
150
6
53/8
136
151/2
394
31/4
83.0
121/2
317.5
81/2
216
12
11/2
39
W13/8
200
8
7
178
19
483
35/8
92.9
151/2
393.7
105/8
270
12
13/4
45
W15/8
250
10
83/4
222
23
585
41/4
108.0
19
482.6
123/4
324
12
2
51
W17/8
300
12
103/8
263
261/2
675
47/8
124.0
221/2
571.5
15
381
16
21/8
54
W2
350
14
113/8
289
291/2
750
51/4
133.5
25
635.0
161/4
413
16
23/8
61
W21/4
400
16
13
330
321/2
825
53/4
146.5
273/4
704.8
181/2
470
16
25/8
67
W21/2
450
18
145/8
371
36
915
63/8
162.0
301/2
774.7
21
533
16
27/8
74
W23/4
500
20
163/8
416
383/4
985
7
178.0
323/4
831.8
23
584
16
31/8
80
W3
600
24
195/8
498
46
1170
8
203.5
39
990.6
271/4
692
16
35/8
93
W31/2

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