As its name derives short radius elbow are much shorter in size. Short radius elbow conveys that the radius of bend of the elbow is equal to the pipe diameter. It is less used for pipelines due to its special design. It is usually utilize for low-pressure fluid applications and even where there is limited space for installation.
Table of contents
SR Elbow Specification
Short Radius 90 Degree Elbow Dimensions
45 Degree SR Elbow Dimensions
ASME B16.9 Short Radius Elbow Dimensions Inches
Short Radius Elbow Formula
SS Short Radius Elbow Applications
Long Radius VS Short Radius Elbow
90 Deg Short Radius Elbow Weight Chart
Types of Short Radius Elbow
Inconel Buttweld SR Elbow Tolerance
Marking for Nickel Alloy Buttweld SR Elbow
ANSI B16.9 SR Elbows Fittings Materials and Grades
ASME B16.9 SR Elbow Manufacturer in India
ASME B16.9 SR Elbow are usually provided in 90 Degree. It creates much sharper turns compared to long radius elbow. It is manufactured by the regulation of American Society of Mechanical Engineers which looks into the detailed aspect of manufacturing of butt-weld fitting, such as pressure fitting, marking, sizes, surface coating, tolerance, testing, etc.
Following the measures of ASME B16.9 standards, gives reliability to the pipe fitting.
SR Elbow Specification
Short Radius Elbow Size
Seamless Elbow : 1/2 to 24 inch
Welded Elbow : 1/2 to 48 inch
ASME B16.9 Short Radius Elbow Manfacturing Type
Seamless
Welded
ERW
Fabricated
Thickness
Schedule 5S to 160
Dimensions Standard
ASME B16.9
MSS-SP-43
ASME B16.28
Type
90 Degree
45 Degree
180 Degree
1D
3D
5D
Short Radius Elbow 45 Degree Material
Stainless Steel
Duplex & Super Duplex Steel
Carbon Steel
Alloy Steel
Nickel Alloy
3/8 NPT Street Elbow Certificates
MTC EN 10204 3.1/3.2
100% Radiography Test Report
Raw Materials Certificate
Third Party Inspection Report
NACE MR0175
NACE TM-0284
NACE MR0103
ISO 15156
3/4 Street Elbow Origin
Japanese
Korean
Indian
Russian
Ukraine
USA
European
45 Deg SR Elbow Pressure Class
150# to 2500#
Connection Type
Threaded
Weld
Clamp End
Short Radius Elbow Standard
EN
DIN
ASTM
ASME
JIS
Manufacturing Method
Pressing
Hot Forming
Hamming
Flat rolling
Pipe rolling
Shape rolling
Hot mandrel bending
Piercing
Thickness Tolerance
+/-12.5%
90 Degree SR Elbow Testing
Ultrasonic test
PMI
HIC tested
MT
Short Radius 90 Degree Elbow Dimensions
NPS in inch
Center to End
B
Outer Diameter
D
1
25
33.4
1¼
32
42.2
1½
38
48.3
2
51
60.3
2½
64
73
3
76
88.9
3½
89
101.6
4
102
114.3
5
127
141.3
6
152
168.3
8
203
219.1
10
254
273
12
305
323.8
14
356
355.6
16
406
406.4
18
457
457
20
508
508
22
559
559
24
610
610
Short radius reducing elbow are manufactured in size range of 1/2 to 48 inch
The wide size range of short radius reducing elbow will give flawless fastening amongst the diameters of several pipes in piping system. It helps to provide advantageous fluid flow by averting the limitations and certifying accurate move amongst several sizes of pipes which are used for several parts of plumbing and industrial applications.
The below given table will provide you the dimension or size range of short radius elbow.
45 Degree SR Elbow Dimensions
NPS in inch
Outer Diameter
D
45°
3D
Center to End
A
45°
SR
Center to End
A
1/2
21.3
–
38
1
33.4
76
38
1½
48.3
114
57
2
60.3
152
76
3
88.9
229
114
4
114.3
305
152
6
168.3
457
229
10
273
762
381
14
355.6
1067
533
18
457
1372
686
22
559
1676
838
26
660
1981
991
30
762
2286
1143
34
864
2591
1295
38
965
2896
1448
42
1067
3200
1600
44
1118
3353
1676
46
1168
3505
1753
48
1219
3658
1829
ASME B16.9 Short Radius Elbow Dimensions Inches
Nominal Size
OD at Bevel
Center to End
in.
A
in.
1
1.32
1
1 1/4
1.66
1.25
1 1/2
1.90
1.50
2
2.38
2
2 1/2
2.88
2.50
3
3.50
3
3 1/2
4
3.50
4
4.50
4
5
5.56
5
6
6.62
6
8
8.62
8
10
10.75
10
12
12.75
12
14
14
14
16
16
16
18
18
18
20
20
20
22
22
22
24
24
24
In SR Elbow radius is the same as pipe diameter (R=D)
It means that SR elbow curvature of the bend is same to the pipe diameter. This offers compact and beneficial change for fluid flow direction in piping applications. The same size radius reduces the extra steps for fastening the elbow while guaranteeing smooth flow between the pipe and short radius elbow.
Short Radius Elbow Formula
90 degree short radius elbow are used in conditions where the corners are relatively sharp
Its structure gives a compact curve which makes it highly applicable for application where restricted space is available to cross over the hindrance or where the piping system needs to change their direction rapidly. It reduces altogether piping run range or extent, which are essential for compressed installation of piping application.
SS Short Radius Elbow Applications
Oil and Gas Pipeline
Water Supply Systems
Chemical Industry
Power Plant
Fabrication Industry
Structural Pipe
Paper & Pulp Industry
Food Processing Industry
45 deg sr elbow creates a relatively large pressure drop as compared to long radius elbow
This makes 45 deg sr elbow fluid doesn’t flow as smoothly as compared long radius elbow because of which SR elbow is not well-known. Although it is used where the flow rate is non-essential and where fluids are moved over a long distances or experiences several directional changes, as this elbow fitting gives greater friction loss and also where installation of huge pumping machinery.
Long Radius VS Short Radius Elbow
Description
Long Radius
Short Radius Elbow
Size
1.5 times greater diameterÂ
1 times greater diameterÂ
Bend radius
Larger
Small
Shape
FlatterÂ
CompactÂ
AppearanceÂ
Curved curve
Sharper curve
Flow resistance
Small resistance
Greater resistance
Effects of fluid flow
Smooth fluid flow
Turbulence flow
ApplicationÂ
Chemical industry, oil and gas industries
Used where the flow is turbulence
Advantages
Heavy than short radius
Lighter than a long radius
Cost
More expensive than a short radius
Less expensive than a long radius
Pressure Loss
High
Low
90 Deg Short Radius Elbow Weight Chart
NPS
Weight In Kilogram
1/2
.08
1
.18
1 1/2
.41
2
.73
3
2.27
4
4.08
6
11.11
10
39.92
14
72.57
18
117.93
22
178.72
26
249.48
36
481.72
Types of Short Radius Elbow
Short Radius 90 Degree Elbow
45 Degree SR Elbow
3D Short Radius Elbows
ASME B16.9 5D Short Radius Elbow
Buttweld Short Radius Pipe Elbow
1.5D Schedule 10 SR Elbows
Inconel Buttweld SR Elbow Tolerance
NPS
32 to 48
26 to 30
20 to 24
10 to 18
OD
at Bevel (D)
+ 6.4
– 4.8
+ 6.4
– 4.8
+ 6.4
– 4.8
+ 4
– 3.2
ID at End
4.8
3.2
Center to End 3D (A/B)
6
6
3
3
Center to End LR (A/B)
5
3
2
2
NPS
5 to 8
4
3 to 3.1/2
1/2 to 2.1/2
OD
at Bevel (D)
+ 2.4
– 1.6
1.6
1.6
+ 1.6
– .8
ID at End
1.6
.8
Center to End 3D (A/B)
3
3
3
3
Center to End LR (A/B)
2
2
2
2
Marking for Nickel Alloy Buttweld SR Elbow
ANSI B16.9 SR Elbows Fittings Materials and Grades
