WHOLE STEEL PIPE FLANGE JB/T79.1-1994

| PN4.0MPa F M |
DN |
D |
K |
L |
n-Th |
d |
Y |
f |
f2 |
C |
| 15 |
95 |
65 |
14 |
4-M12 |
45 |
40 |
2 |
4 |
16 |
| 20 |
105 |
75 |
14 |
4-M12 |
55 |
51 |
2 |
4 |
16 |
| 25 |
115 |
85 |
14 |
4-M12 |
65 |
58 |
2 |
4 |
16 |
| 32 |
135 |
100 |
18 |
4-M16 |
78 |
66 |
2 |
4 |
18 |
| 40 |
145 |
110 |
18 |
4-M16 |
85 |
76 |
3 |
4 |
18 |
| 50 |
160 |
125 |
18 |
4-M16 |
100 |
88 |
3 |
4 |
20 |
| 65 |
180 |
145 |
18 |
8-M16 |
120 |
110 |
3 |
4 |
22 |
| 80 |
195 |
160 |
18 |
8-M16 |
135 |
121 |
3 |
4 |
22 |
| 100 |
235 |
190 |
23 |
8-M20 |
160 |
150 |
3 |
4.5 |
24 |
| 125 |
270 |
220 |
26 |
8-M24 |
188 |
176 |
3 |
4.5 |
28 |
| 150 |
300 |
250 |
26 |
8-M24 |
218 |
204 |
3 |
4.5 |
30 |
| 200 |
375 |
320 |
30 |
12-M27 |
282 |
260 |
3 |
4.5 |
38 |
| 250 |
445 |
385 |
34 |
12-M30 |
345 |
313 |
3 |
4.5 |
42 |
| 300 |
510 |
450 |
34 |
16-M36 |
408 |
364 |
4 |
4.5 |
46 |
| 350 |
570 |
510 |
34 |
16-M36 |
465 |
422 |
4 |
5 |
52 |
| 400 |
655 |
585 |
41 |
16-M36 |
535 |
474 |
4 |
5 |
58 |
| 450 |
680 |
610 |
41 |
20-M36 |
560 |
524 |
4 |
5 |
60 |
| 500 |
755 |
670 |
48 |
20-M42 |
612 |
576 |
4 |
5 |
62 |
| 600 |
890 |
795 |
54 |
20-M46 |
730 |
678 |
5 |
6 |
62 |
| 700 |
995 |
900 |
54 |
24-M48 |
835 |
768 |
5 |
6 |
68 |
| PN6.4MPa F M |
DN |
D |
K |
L |
n-Th |
d |
Y |
f |
f2 |
C |
| 15 |
105 |
75 |
14 |
4-M12 |
55 |
40 |
2 |
4 |
18 |
| 20 |
125 |
90 |
18 |
4-M16 |
68 |
51 |
2 |
4 |
20 |
| 25 |
135 |
100 |
18 |
4-M16 |
78 |
58 |
2 |
4 |
22 |
| 32 |
150 |
110 |
23 |
4-M20 |
82 |
66 |
2 |
4 |
24 |
| 40 |
165 |
125 |
23 |
4-M20 |
95 |
76 |
3 |
4 |
24 |
| 50 |
175 |
135 |
23 |
4-M20 |
105 |
88 |
3 |
4 |
26 |
| 65 |
200 |
160 |
23 |
8-M20 |
130 |
110 |
3 |
4 |
28 |
| 80 |
210 |
170 |
23 |
8-M20 |
140 |
121 |
3 |
4 |
30 |
| 100 |
250 |
200 |
26 |
8-M24 |
168 |
150 |
3 |
4.5 |
32 |
| 125 |
295 |
240 |
30 |
8-M27 |
303 |
176 |
3 |
4.5 |
36 |
| 150 |
340 |
280 |
34 |
8-M30 |
240 |
204 |
3 |
4.5 |
38 |
| 200 |
405 |
345 |
34 |
12-M30 |
300 |
260 |
3 |
4.5 |
44 |
| 250 |
470 |
400 |
41 |
12-M36 |
352 |
313 |
3 |
4.5 |
48 |
| 300 |
595 |
460 |
41 |
16-M36 |
412 |
364 |
4 |
4.5 |
54 |
| 350 |
600 |
525 |
41 |
16-M36 |
475 |
422 |
4 |
5 |
60 |
| 400 |
670 |
585 |
48 |
16-M42 |
525 |
474 |
4 |
5 |
66 |
| 500 |
800 |
705 |
54 |
20-M48 |
640 |
576 |
4 |
5 |
70 |
| 600 |
930 |
820 |
58 |
20-M52 |
750 |
678 |
5 |
6 |
70 |
| PN10.0MPa F M |
DN |
D |
K |
L |
n-Th |
d |
Y |
f |
f2 |
C |
| 50 |
195 |
145 |
26 |
4-M24 |
112 |
88 |
3 |
4 |
28 |
| 65 |
220 |
170 |
26 |
8-M24 |
138 |
110 |
3 |
4 |
32 |
| 80 |
230 |
180 |
26 |
8-M24 |
148 |
121 |
3 |
4 |
34 |
| 100 |
265 |
210 |
30 |
8-M27 |
172 |
150 |
3 |
4.5 |
38 |
| 125 |
310 |
250 |
34 |
8-M30 |
210 |
176 |
3 |
4.5 |
42 |
| 150 |
350 |
290 |
34 |
12-M30 |
250 |
204 |
3 |
4.5 |
46 |
| 200 |
430 |
360 |
41 |
12-M36 |
312 |
260 |
3 |
4.5 |
54 |
| 250 |
500 |
430 |
41 |
12-M36 |
382 |
313 |
3 |
4.5 |
60 |
| 300 |
585 |
500 |
48 |
16-M42 |
442 |
364 |
4 |
4.5 |
70 |
| 350 |
655 |
560 |
54 |
16-M48 |
498 |
422 |
4 |
5 |
76 |
| 400 |
715 |
620 |
54 |
16-M48 |
558 |
474 |
4 |
5 |
80 |
| PN16.0MPa F M |
DN |
D |
K |
L |
n-Th |
d |
Y |
f |
f2 |
C |
| 25 |
140 |
100 |
23 |
4-M20 |
72 |
58 |
2 |
4 |
28 |
| 32 |
165 |
115 |
25 |
4-M22 |
85 |
66 |
2 |
4 |
30 |
| 40 |
175 |
125 |
27 |
4-M24 |
92 |
76 |
3 |
4 |
32 |
| 50 |
215 |
165 |
25 |
8-M22 |
132 |
88 |
3 |
4 |
36 |
| 65 |
245 |
190 |
30 |
8-M27 |
152 |
110 |
3 |
4 |
44 |
| 80 |
260 |
205 |
30 |
8-M27 |
168 |
121 |
3 |
4 |
46 |
| 100 |
300 |
240 |
34 |
8-M30 |
200 |
150 |
3 |
4.5 |
48 |
| 150 |
390 |
318 |
41 |
12-M36 |
270 |
204 |
3 |
4.5 |
66 |
| 200 |
480 |
400 |
48 |
12-M42 |
345 |
260 |
3 |
4.5 |
78 |
| 250 |
580 |
485 |
54 |
12-M48 |
425 |
313 |
3 |
4.5 |
88 |
| 300 |
665 |
570 |
54 |
16-M48 |
510 |
364 |
4 |
4.5 |
100 |