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 |
|
|---|---|
| ASME B16.9 Short Radius Elbow Manfacturing Type |
|
| Thickness |
|
| Dimensions Standard |
|
| Type |
|
| Short Radius Elbow 45 Degree Material |
|
| 3/8 NPT Street Elbow Certificates |
|
| 3/4 Street Elbow Origin |
|
| 45 Deg SR Elbow Pressure Class |
|
| Connection Type |
|
| Short Radius Elbow Standard |
|
| Manufacturing Method |
|
| Thickness Tolerance |
|
| 90 Degree SR Elbow Testing |
|
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 diameter | 1 times greater diameter |
| Bend radius | Larger | Small |
| Shape | Flatter | Compact |
| Appearance | Curved curve | Sharper curve |
| Flow resistance | Small resistance | Greater resistance |
| Effects of fluid flow | Smooth fluid flow | Turbulence flow |
| Application | 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
| Material | Standards and Grade |
|---|---|
| Carbon Steel Short Radius Elbow |
|
| Alloy Steel Short Radius Elbow |
|
| Stainless Steel Short Radius Elbow |
|
| Inconel 90 Degree Short Radius Pipe Elbow |
|
| Copper Nickel Short Radius 90 Degree Elbow |
|
| Hastelloy Short Radius Reducing Elbow |
|
| Nickel Alloy SR Elbow |
|
| Duplex Short Radius Elbow |
|
| Super Duplex SR 45 deg Elbow |
|
| Incoloy SR Elbow |
|
| Titanium Short Radius 90 Degree Elbows |
|
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