This standard specifies the structural shape, series parameter dimensions, allowable load, materials and manufacturing, inspection, acceptance and installation technical requirements of saddle bearings. This standard applies to saddle supports for steel horizontal vessels supported by double pivot points. The structural type and structural dimensions of horizontal vessel saddle supports with multi-fulcrum supports can also be used with reference to this standard. JB/T 4712-1992 saddle bearing JB/T4712-1992 standard download and decompression password: www.bzxz.net

Industry Standards of the People's Republic of China
JB/T 4712-92
Saddle Bearing
Released on 1992-07-16
Ministry of Mechanical and Electronic Industry of the People's Republic of China Ministry of Chemical Industry of the Republic
Ministry of Labor of the People's Republic of China
Sinopec Petrochemical Corporation
Implemented on 1992-12-01
Released
2| |tt||3
4
5
Theme content and scope of application
Quoted standards
Type characteristics
Series parameters and dimensions
Materials
6
Mark·
Manufacturing requirements
7
8 Selection instructions
Item||tt| |Appendix A Sliding saddle bolt hole length (supplement) Appendix B
Allowable load of the saddle exceeding the standard height (supplement) Appendix C
Saddle base pad dimensions (reference)| |tt||times
(3)
(3)
(3)
(5)
(22)
(22)
(22)
(22)
(25)
(25)
(29)www.bzxz.net
Theme content and scope of application
Industry Standard of the People's Republic of China
Saddle Bearing
JB/T4712-92
This standard specifies the structural type and series of saddle bearings Parameter dimensions, allowable loads, materials and technical requirements for manufacturing, inspection, acceptance and installation,
This standard is applicable to saddle supports for steel horizontal vessels supported by double pivot points. The structural type and structural dimensions of multi-support horizontal vessel saddle supports can also be used with reference to this standard. 2 Reference standards
GB150
Steel pressure vessels
Basic form and size of weld grooves for gas welding, manual arc welding and gas shielded welding GB985
GB1804 Tolerances and Limit deviations for dimensions without tolerances GBJ17
Steel structure design specifications
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Type characteristics
Saddle bearings are divided into light (code A) and heavy ( Code B) Two types. Heavy-duty saddles are divided into five models according to the wrapping angle, production method and attached backing plate: BI with a wrapping angle of 120℃, welded and with a backing plate; BⅡ with a wrapping angle of 150C, welded and with a backing plate; BⅢ with a wrapping angle of 120C , welded, without backing plate; BIV - corner wrapped at 120°C, bent, with backing plate; BV - corner wrapped at 120°C, bent, without backing plate. The structural characteristics of various types of saddles are shown in Table 1. Ministry of Mechanical and Electronic Industry
Ministry of Chemical Industry
Labor
Motion
Ministry
China Petrochemical Corporation
-3||tt ||Approved on 1992-07-13
1992-12-01 Shijian
Type
Light
Type
乐
Type
A
BI
BI
BI
B
BV
Applicable nominal diameter
DNmm
1000~2000
2100~4900
159~426
300~450
500~900
1000~2000|| tt||2100~4000
1500~2000
2100~4000
159~426
300~450
500~900||tt| |159~426
300~450
500~900
159~426
300~450
500~900
JB /T4712-92
Table 1
String characteristics
120 corner wrapping, welding, four ribs, with backing plate
120 corner wrapping, welding, six Ribs, with backing plate
120 corner wrapping, welded ribs, single ribs, with backing plates
120·Angle wrapping, welded, double ribs, with backing plates120·Angle wrapping, welding, Four ribs, with backing plate 120· corner wrapping, welded, six ribs, with backing plate 150· corner wrapping, welded, four ribs, with backing plate 150 corner wrapping, welded, six ribs, with backing plate ||tt ||120" corner wrap,
welded, single rib, without guard plate
120" corner wrap, welded,
double rib,
without backing plate
120" corner wrap,
120 corner wrap,
Lee system,
Bend system,
Single rib,
With pad Board
Double rib,
With backing plate
120" corner,
Bent,
Single rib, without backing plate||tt ||Without backing plate
Exaggerated system,
Double strategy,
120 corner angle,
The saddle is divided into fixed type (code F) and sliding type (code F) S) Two installation forms of support dimensions
(see table)
Table 2
Table 3
Table 4
Table 5||tt| |Table 6
Table 7
Table 8
Table 9
Table 10
Table 4
Table 5
Table 6
Table 4
Table 5
Table 6
Table 4
Table 5
Table 6
4 Series parameters and dimensions
4·1 light (type A) saddle bearing
JB/T4712-92
4·1·1DN1000~2000, 120° angle light belt The structure and size of the backing plate support should comply with the 16
10 bolts in the exhaust hole specified in Figure 1 and Table 2
EN
6
p 24||tt ||With M20 screw grid
2
F type
Picture
S type
JB/T4712-92
6|| tt||0
o
()
4
8
4
4
(a)| |tt||0
obon
006
0
8
6
board
osc||tt ||Batch
B
OE
0
8
6
09
0
081
5
board
0
oz
rib
5
0
0| |tt||0
0
0
8
6
2
0
000||tt ||Board
Bottom
0
00%
Follow break
O0
86
5||tt ||1
091
8st
st
(a
cake
000m
0061||tt| |0081
0
0091
oos1
0
oont
0001
Na
JB /T4712-92
DN2100～4000, 120° angle light-weight padded support structure and dimensions should comply with the requirements in Figure 2 and Table 3, the exhaust hole is electrically 16
F type||tt| |Picture 2
0
5
-
With 0 bolt
S type
JB/T4712-92||tt| |6v
Infant
4
3
2
2
3
2
9
9
(ax)
o
u
0
(a)
0||tt| |W
2
P
o
f
08
DOE
08
8
8
0
80
board
009
o0s
os
00b|| tt||pad
table
0
0810
0
8
90h
board||tt| |SEE
91E
89
0
STRONG
0
0
2
o
8
4
08E
0
000
Board
Ting
082|| tt||bo
0
08S
osz
Butterfly quilt
e
E
0||tt ||96
80
t
N
29
000P
008E
00
0
0008
080
0090
00
000
0012
NG
8| |tt||4·2 heavy-duty (B type) digital bearing
JB/T 4712-92
4·2·1DN159～426, 120° angle heavy-duty with pad or without The structure and dimensions of the backing plate saddle bearing shall comply with the requirements in Figure 3 and Table 4.
Welded
54
Exhaust hole in 8
83
t
1-10
|tt||F type
Bent
2-Φ20
M6 screw wheel
Picture 3
B
16 × 45 *
16x45°
20
20×45*
R15
S type
by
-p| |tt||With 10 bolts
DE
o
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