JB/T 79.4-1994 Ring joint integral cast steel pipe flange

This standard replaces JB 79-59. JB/T 79.4-1994 Ring connection surface integral cast steel pipe flange JB/T79.4-1994 standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Ring connection surface integral cast steel pipe flange
Subject content and scope of application
JB/T 79. 4
Replaces JB7959|| tt | ~20.0MPa ring connection surface integral cast steel pipe flange. 2 Reference standard
JB/T74 pipeline flange technical conditions
3 The type and size of the flange should comply with the regulations in Figure 1 and Table 1~Table 4. X
Figure 1
Note: 1) The height of the protruding part is equal to the depth E of the trapezoidal groove, but is not limited by the tolerance of dimension F. The technical requirements for the fully flat 4-flange with the outline shown in the dotted line are allowed to be in accordance with JB/T74. 5 The nominal pressure of the flange and the maximum allowable operating pressure at different temperatures are in accordance with the regulations in Appendix B of JB/T74. The Ministry of Machinery Industry of the People's Republic of China approved the implementation of 7995-10-01 on 1994-12-09
nominal
tongzong
15| |tt||20
1.030||tt ||125
339| |tt||400
Flange outer diameter
Series 1/Series 2
130/125
1403/135
155/150
170/165
180/175
205/200
215/210|| tt||250
3457340
3757370
415/405
440/430
5007595
connect
Table 1
continue
Bolt hole
Center circle
Diameter
110||tt| |125
JB/T 79.4--94|| tt||PN6.3MPa ring connection surface integral cast steel pipe flange size ruler
Bolt hole diameter
Series】/Series 2
14||tt ||18
26/25||tt ||30
36/41||tt ||41
Quantity
12| |tt||12
Double-ended stud
Thread Th,
Series 1/Series 2
M24/M22
M33/M30
M33/M30
M33/M36
16|| tt||20
M33/M36
M39/M42
M45/M48
Sealing surface ruler
F|| tt||15535
E||tt| |6.50.8
method
thickness
16.50.824
1051 851 12
1301102| |tt||140115:12
1681115112
202175
2-1020512
27023512
30126512
32528012
352320
41237512
14751420
8| |tt||8
11|| tt||1
amount
20||tt| |2
421239
44 268
10.||tt| |46
64059011
10| |tt||heart
70510||tt ||!
38|| tt||2
公称||tt| |通很
(225)||tt ||250
艺外外很
系系1/系系2||tt| |105
130/125
140/135
155/150
170/165
220||tt| |230
315/310
355/350
505/500
JB/T79.4--94
表2PN10.0MPa环电视面推行滨钢管艺机分报
螺梓孔
中心圆
90||tt| |100
尺守| |tt||軺梓孔化合
系到1/系列2
23|| tt||23
3.1||tt| |34
48/54||tt| | quantity
双头軺柱
軺纹Th.
系系1/系系2
M24/M22
M24/M22
M24/M22| |tt||M27
M33/M36
16| |tt||16
M39/M42
M45/M48
M45/M48
55||tt ||68
工业而化学
18265||tt ||95175
138111012
14811512
172145
210|17512
250205
280|235
312|265
352280
382320| |tt||12
144237512
498420
558480||tt ||17
28| |tt||32
61|| tt||68
421189
481251
541284
60346| |tt||70
17||tt ||18
54| |tt||58
Gt||tt ||112
25||tt| |32
（175）
蛋外很
系系2
665|| tt||连
JB/T79.4··94
表3PN16.0MPa
285|| tt||318
螺栓孔化合|| tt||系列之
30||tt ||30
quantity
8| |tt||12
双头螺柱
螺纹Th.
系列2
M48| |tt||M48
工业面包装
5235916.5
8565| |tt||9275
.| |tt||N
1329512|| tt||15211012
168:13012
200|160|12
238190
6.5||tt| |6.5
270205
325255
3451275
39030517
4253301711
510138023|| tt||14
6||tt| |76
(3. 81 44
48||tt| |60
7813161
22| |tt||24
56|| tt||8
76||tt| |10
150| |tt||(175)
(225）
蛋外很
系统2| |tt||120
290||tt ||360
螺梓孔
中心圆
diameter
90||tt| |102
JB/T 79.4--94
PV20.0MPa管艺机北京尺
螺梓孔化合
系列2
48| |tt||54
quantity
4||tt ||4
双头軺柱
軺纹Th.
系列2
M20| |tt||M22
M36||tt ||M42
工业面包装
55||tt ||62
Ernux||tt| |6. 5
16511012
190160112| |tt||245190
270205
305240
1340275
3801305
0.8||tt ||0.8
Flange
Thickness
11| |tt||11
418330171110.8
30838023
141||tt ||0.8
Flange neck
—Saax
51|| tt||60bZxz.net
204||tt| |237
1100377
40|| tt||52
weak 6
5||tt ||8
94 | | tt | | to | Standard flange sizes are interchangeable, and new product designs should give priority to Series 1 sizes.
Additional notes:
This standard is proposed and administered by the Machinery Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry and Harbin Boiler Factory. The drafters of this standard are Li Junying and Wu Zhenjia. 353
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