This standard replaces JB 85-59. This standard specifies the type and size of flanged plate loose steel pipe flanges with a nominal pressure PN of 0.25 and 0.6MPa. This standard applies to flanged plate loose steel pipe flanges with nominal pressures PN0.25 and 0.6MPa. JB/T 85-1994 flanged plate loose steel pipe flange JB/T85-1994 standard download and decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
Flanged plate loose steel pipe flange
Theme content and scope of application
JB/T85---94
Generation JB85 ---59
This standard specifies the type and size of flanged plate loose steel pipe flanges with a nominal pressure PN of 0.25.0.6MPa. This standard is applicable to flanges with nominal pressures PN0.25 and 0.6MPa. Side plate loose steel pipe flange. 2 Reference standard
JB/74
Pipeline flange technical conditions
3 The flange type and scale correspond to Figure 1 and Table 1. The technical requirements of pipe foam
30°
D
Figure 1
4 flange are in accordance with the requirements of JB/T74. The nominal pressure and the maximum allowable working pressure at different temperatures are in accordance with the provisions of Appendix B of JB/T74, 6 marking example
nominal diameter 300mm, nominal pressure 0.6MPa, flanged plate loose steel with size series 2 Pipe flange; flange 300-6 JB/T 85--94
Flanged plate loose steel pipe flange with nominal diameter 300mm, nominal pressure 0.6MPa, size series 1: French cover 300 -6 Series 1) JB/T85—94
The Ministry of Machinery Industry of the People's Republic of China approved on 1994-12-09 for implementation on 1995-10-01
391
Nominal name
Diameter
DN
10
15
20
25
32
40
50
65
803
100
125
150
(175)
arm
Flange outer diameter
Outer
A
18
25
32
38
45||tt| |57
73
89
1)
[Series 1/
Series 2
75
80| |tt||90
100
120
130
140
160
190/185
108| |tt||133
159
194
200
219
(225)
245
250| |tt||300
273
325
210/205
240/235
265/260
290||tt ||JB/T85 ---94
Table 1
PN0.25 and O.6MPa flanged plate loose steel pipe flange size ruler
Connection||tt| |Bolt hole
Center circle
Diameter
K
50
55
65
75||tt| |90
100
110
130
150
170
200
225
255
320/315
340
375/370
440/435
280
305
335|| tt||395
Bolt hole
Diameter
Lbzxz.net
Series 1/
Series 2
12
12
12
12
14
14
14
14
18
18|| tt||18
18
18
18
18
18
23
Screws, studs| |tt||Thread Th,
Quantity
4
4
4
4
4
4| |tt||4
4
4
8
8
8
8
12||tt ||12
Series 1/
Series 2
M10
M10
M10
M1O
M12|| tt||M12
M12
M12
M16
M16
M16
M16
M16||tt| |M16
M16
M16
M20
Flange
Thickness
10
10
10
12
12
12
12
14
14
11
14| |tt||16
18
18
20
20
24
flange
inner diameter|| tt||B
16
2
27
34
41
48
60||tt| |80
93
112
138
164
200
225
251
279
331
turn over the ring
S
min
11.8
32
40
50
60
70
80
90
110
125
145
175|| tt||200
230
2
2
2
2.6
min
3||tt| |3
3.5
2.6
3.5
2.6
3.
2.63.5
3.2||tt ||3.2
3.2
3.2
3.2
2553.2
280
310
362
4
4
4
5
5
5
h
Inin
9| |tt||12
15
15
17
23
23
23
28||tt ||30
30
30
30
30
30
35
im
Theoretical quality ks
Flange ring
0.30:1 0.02
0. 340.033
0.120.05
0. 61 : 0. 07
1 0. 88 : 0. 1i
1.22 0.14
11.
Os
1. 59 0. 2.1
2.100 .36
2.60.48
2.90) 0.65
3. 760. 73
4.610.85
5
3. 110 . 97
5 6. 171. 3
6. 801.
5
510.851.56
Note: The connection dimensions of series 1 flanges in the table are interchangeable with the national standard and German flange standards, and the dimensions of series 2 are interchangeable with the flange dimensions of the original machine standard: Series 1 dimensions should be used first in the design of new products.
The theoretical weight of flanges listed in the table refers to series 2 flanges. Additional notes:
This standard was proposed and assigned by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Mechanical Standardization Research Institute of the Ministry of Machinery Industry and Harbin Boiler Factory. The main drafters of this standard are Li Junying and Wu Zhenjia. 392
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