Short radius elbows

Short radius pipe elbows

The short radius elbows have a center-to-end distance equal to the Nominal Pipe Size (NPS) in inches, while the long radius is 1.5 times the NPS in inches. Short elbows are widely available, and are typically used in pressurized systems.

SR (Short Radius) Elbows have a Center-to-Face dimension of 1.0 X diameter. They are typically used in tight areas where clearance is the main issue.

The degree types of short radius pipe elbows as below:

ASME B16.9 90°Short Radius Elbow Dimensional Tolerance

NPS

O.D.
D

90 degrees
Long Radius
Center-to-End
A

45 degrees
Long Radius
Center-to-End
B

90 degrees
3D
Center-to-End
A

45 degrees
3D
Center-to-End
B

1/2 21.3 38 16
3/4 26.7 38 19 57 24
1 33.4 38 22 76 31
42.2 48 25 95 39
48.3 57 29 114 47
2 60.3 76 35 152 63
73 95 44 190 79
3 88.9 114 51 229 95
101.6 133 57 267 111
4 114.3 152 64 305 127
5 141.3 190 79 381 157
6 168.3 229 95 457 189
8 219.1 305 127 610 252
10 273 381 159 762 316
12 323.8 457 190 914 378
14 355.6 533 222 1067 441
16 406.4 610 254 1219 505
18 457 686 286 1372 568
20 508 762 318 1524 632
22 559 838 343 1676 694
24 610 914 381 1829 757
26 660 991 406 1981 821
28 711 1067 438 2134 883
30 762 1143 470 2286 964
32 813 1219 502 2438 1010
34 864 1295 533 2591 1073
36 914 1372 565 2743 1135
38 965 1448 600 2896 1200
40 1016 1524 632 3048 1264
42 1067 1600 660 3200 1326
44 1118 1676 695 3353 1389
46 1168 1753 727 3505 1453
48 1219 1829 759 3658 1516


An elbow is a pipe fitting installed between two lengths of pipe or tubing to allow a change of direction, usually a 180° or 90° angle, though 45° elbows are also made. The ends may be machined for butt welding (SW) or socketed welding(SW) etc.

Most elbows are available in short radius or long radius variants. When the two ends differ in size, the fitting is called a reducing elbow or reducer elbow.

Elbows are categorized based on various design features as below:

Size range:

Elbow Size

Recommended type of pipe elbows:

Materials

  • Carbon steel: ASTM/ASME A234 WPB-WPC
  • Alloy steel: --WP 22-WP 5-WP 91-WP 911
  • Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6
  • High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70
  • Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N
    • ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti
    • ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

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It is the ideal wearable and corrosion resistant engineering pipeline, with wear resistance 15 times higher than common steel pipe, smooth inner surface, and favorable liquor resistance.

Pipe elbows

Butt Weld Pipe Fitting Bevel

  • All welded pipe fittings have bevelled end to allow for ease of welding.
  • This bevel allows for full penetration weld in most cases.
  • There are two types of bevels;
    Plain Bevel and Compound Bevel: according to the bevel of welding pipe fittings construction .
  • ASME B16.28, Buttwelding Short Radius Elbows and Returns
Industrial Processes: Bending, squeezing, pressing, forging, machining and more ANSI/ASME B16.25, Buttwelding Ends
ANSI/ASME B16.25 Standard covers the preparation of butt welding ends of piping components to be joined into a piping system by welding.

Application of pipe elbows:

Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc.

ELL & ELLS

  • A wing of a building at right angles to the main structure.
  • A right-angled bend in a pipe or conduit; an elbow.

Pipe elbows by radius and degree

We offer multiple bend pipes, all with different specs and operative requirements.

Short radius

SR Elbows have a Center-to-Face dimension of 1.0 X diameter usually includes three angles degree ( 45°,90°,180°).

Butt weld 5D pipe bend
Long radius

The radius of LR elbow curvature of is 1.5 times the diameter of the pipe, usally includes three degrees (45° ,90°,180°)

Reducing elbow

The reducing elbow eliminates one pipe fitting and reduces the welding by more than one-third.



Fitting specification, Standard and identification

There are different varieties of pipe fittings made of various materials and available in various shapes and sizes.



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