This standard replaces JB 79-59. JB/T 79.1-1994 Raised surface integral cast steel pipe flange JB/T79.1-1994 Standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Raised integral cast steel pipe flange
1 Subject content and applicable scope
.IB/T 79.1.--94
Replaced JB79·59
This standard specifies the type and size of raised face integral cast steel pipe flanges with a nominal pressure PN of 1.6.2.5.4.0MPa. This standard is applicable to raised faces with a nominal pressure PN1.6~~4.0MPa. Integral cast steel pipe flange 2
Quote Biya
JB/T 74:
Pipeline flange
Technical conditions
Flange type and dimensions should comply with the requirements in Figure 1 and Tables 1 to 3. 3
N
K
D
Picture
The technical requirements of method 4 are in accordance with the provisions of JB/T74. 5. The nominal pressure of the flange and the maximum allowable working pressure at different temperatures are in accordance with the provisions of Appendix 13 of JB/T74. The Ministry of Machinery Industry of the People's Republic of China approved the implementation of 19951001 on 1994-12-09
335
nominal
diameter
TN
15
3
40
50
65
80
133
125
130
(17 )
200
(225)
250
300
.
460
50o
fio
700)
8
00
1
1 20
Fanguan outer diameter
Series 1/Series 2
93
105
135
140/135
150/145
165/160
185/ 180
200/195
220/215
250/245
285/280
310
340/335||tt ||365
4.05
460
520
680
6.40
7157705
840
910
1025/1020
—
1400,
st
336
1 125/1 1203
1255
1485
1685
1 3
Table 1
Connection
Bolt hole
Center circle||tt| |First Path
65
75
85
100
110
123
145
160
1s0
210
240
270
295
325
355
410| |tt||170
525
585
850
770
840
950
1||tt ||1170
1390
1590
1820
Continue
JB/T79.1
94
PN1. 6MPa convex integral cast steel pipe flange size ruler
Screw tie diameter
1
Series 1/Series 2
14
14||tt ||14
18
18
18
18
18
18
18
23
23
23
23
26/25
26/25
26/25
30| |tt||30
34
36/41
36/41
41
42/48
48/54| |tt||48/54
58
Bolts, studs
Quantity
1
Pure
4.||tt ||8
8
8
12
12
12
16
16
1 20
20
20
24
24
28
28
32
36
40
Thread Th.
Series 1/Series 2
M12
M12
MI2
M16|| tt||M16
M16
M16
M16
M16
Mt6
M20
M20||tt| |M20
M20
M24/M22
M24/M22
M24/M22
M27
M27
M3O )
M33/M36
M33/M36
M36
M36
M39/M42
M45/M48
M45/M48
M52
Seal simple size
45
5.5
65
78
85||tt ||100
120
/135
155
185
210
240
265||tt| |295
320
375
435
485
543
608
718
788
898
998
1110
132-
1525
1750
2
2| |tt||2
3
3
3
3
3
3
3||tt ||3
3
5
5
5
5
Flange
Thickness||tt| |14
14
14
16
16
16
18
20
20
22
24
26
26
26
30
30
34|| tt||36
40
14
4.8
5
52
4
t
58
湛
39
44| |tt||49
5G
6i4
74
95
110
E3
161||tt ||186
215
240
269
298
348
402
156
310
361
572
7
28
98
084
288
—192
68
1 704
im
R
12 14
12
12
1
12
—5
15
18
1.8
20
2
22| |tt||2.4
24
26
28
30
32
35
8||tt ||12
12
14
16
32
5
f
6
6
8
8
！
(
10
1
:10
1
12
7
12
1元
公称
通很
DN
15
20
25
32
4.0
50
65
80
100|| tt||125
150
(175)
200
(225)
250
300
350
400
4.50
500
600
700
800
900
1000|| tt||1200
1400
蛋外外很
D
系例1/系系2
95
105|| tt||115
140/135
150/145
165/160
185/180
200/195
230
270
300
330
360
395
425
485
555/550
620/610
670/660
730
845/840
960/955
1085/1070||tt| |1 185/1 180
1320/1305
1520/1525
1755/1750
连
JB/T 79.1-94||tt ||表2PN2.5MPa凸面推行手钢管艺机接
螺梓孔
中心圆
diameter
K
65||tt ||75
85
100
110
125
145
160
190
220
250
280
310
340
370
430
190
550| |tt||600
660
770
875
990
1090
1210
尺||tt ||軺梁孔化合
L
系系1/系系2
14
J4
14
18
18
18
18
18
23
26/25
26/25
26/25| |tt||26/25
30
30
30
34
36/34
36/34||tt ||36/41
41
42/48
4.8
48754
58
1420
1640| |tt||58
65
quantity
4
4
4
4
8||tt ||8
8
8
8
12
12
12
12
螺栓、螺柱
螺纹Th.
系系1/系系2
M12
M12
M12
M36
M16
M16||tt| |M16
M16
M20
M24/M22
M24/M22
M24/M22
M24/M22||tt| |M27
M27
16
16
16
20
20
20
24
24
28
28
32
36
M27
M30
M33/M30
M33/M30
M33/M36
M36
M39/M42
M45/M42
M45/M48||tt| |M52
M52
M56
工业面包装
Q
45
55
65||tt| |78
85
100
120
135
160
188
218
248
278
302
332
390
448
505
555
610|| tt||718
815
1930
1025
1140
1350
1560
T||tt| |2
2
2
2
3
3
3
3
3
3
3
3
4
4
4
4
5|| t | ||16
16
18
18
20
22
22
24
28
30
32
34
36
36
40
44
48| |tt||50
52
56
60
64
66
68
72||tt ||578
mm
艺音
Nru
39
44
49
2||tt ||70
80
101
116
136
169
198
223
252
281
306
360
418
172
522
580
684| |tt||792
896
1000
1104
1308
Su
4
12||tt ||12
1
13
18
18
18
22
24
2.4
26
28
28
30
34
36
38
40| |tt||5
5
5
6
8
10
10
10||tt ||10
12
12
12
42
4h
48
50
52
54
1516
58
12
15
18
18
18| |tt||337
公称
通很
IN
15wwW.bzxz.Net
20
25
32|| tt||40
50
65
80
100
125
15)
(175)| |tt||200
(225)
250
300
350
400
450
500| |tt||600
700
800
艺外外很
D
系系1/系系2
95|| tt||105
115
140/135
150/145
165/160
185/180
200/195
235/230
270
30
350
375
415
450/445||tt| |515/510
580/570
660/655
685/680
755
890
995||tt| |1140/1135
连
JB/T 79. 1--94
表3PN4.0MPa得面最体滨钢管蛋白事动接尺
辺梓孔
中心圆
diameter
K
65
75
85
100
110| |tt||125
145
160
190
220
250
295
320||tt ||355
385
450
510
585
610
670
795
900. |tt||18
18
18
18
18
23
26/25
26/ 25
30
30
34
34
34
36/34
41
41
42/48
48/54
48/54
58
軺栓、螺柱
quantity||tt| |4
4
4
4
4
8
8
8
8
8
12
12
12
12
16
16
16|| tt||20
20
20
24
24
軺纹Th.
系系1/系系2
M12
M12
M12
M16
M16
M16||tt| |M16
M16
M20
M24/M22
M24/M22
M27
M27
M30|| tt||M30
M30
M33/M30
M36
M36
M39/M42
M45/M48||tt| |M45/M48
M52
工业面包装
艺面
安全
d
45
55| |tt||65
78
85
100
120
135
160
188||tt ||218
258
282
315
345
408
465
535
560
612
730
835
960
2
2
3
3| |tt||3
3
3
?
A
5
5
mm||tt ||艺部
CAmux
16
16
16
18
18
20||tt ||22
22
24
28
30
3.1
38
40
42
46
52
58
60
62
62
68
76| |tt||39
44
45
62
70
80
101
116||tt ||140
169
198
331
256
285
314
368
430
488
542
592
696
804
920
12
12| |tt||15
1.5
18
18
2
22
24
28||tt ||28
30
32
34
40
44
4G
46
18
52
R
4
5
6
6
6
8| |tt||1
16
10
10
12
12
12
14||tt ||15.小；系列2发动与原机定艺里化发：新电影设计应了上是电影系统1 size。
additional description；
本电影由机电工业部机斯最好化研究是以归口。本标准由添制工业部添加档定化研究品、哈尔滨锅炉厂起草。本梦推下载起草人李俊英，臭桢家。338
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