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90° Long Radius Elbow

Size: 1/2"-48"
Wall thickness: SCH5S-SCHXXS
Material: Special Alloy, Super Duplex Stainless Steel, Stainless Steel, Carbon Steel, Titanium
Standards: ASME B16.9, ASME B16.28, MSS SP43, MSS SP75

  • PRODUCT DETAIL
  • Material

Size: 1/2″-48″
Wall thickness: SCH5S-SCHXXS
Material: Special Alloy, Super Duplex Stainless Steel, Stainless Steel, Carbon Steel, Titanium
Standards: ASME B16.9, ASME B16.28, MSS SP43, MSS SP75

A 90 degree long radius elbow is a 90 degree elbow whose curvature radius is 1.5 times the diameter of the pipe; if it is more than 1.5 times, it is the category of elbow. Short radius elbow means that the radius of curvature of elbow is equal to the diameter of pipe, which is often said to be twice the diameter. D is elbow diameter. Long radius is the most commonly used, generally the default is also long radius, high pressure or high flow speed places will use long radius, if the solid pipeline resistance requirements are strict, use a larger radius elbow. Short radius is usually used in low pressure fluid or elbows in places where installation is limited. Long radius elbows are preferred if there are no conditional restrictions or are not specified in the contract. Packaging uses wooden boxes, wooden butts, etc. The material of long radius elbow is carbon steel, alloy steel, etc.

BUTTWELD ELBOW 45/90/180 DEGREE

ASME B16.9 buttweld elbows are manufactured in a wide range of dimensions (combinations of outside diameter and wall thickness) to fit ASME B36.10 and ASME B36.19 carbon, alloy and stainless steel pipes of any size between 2 and 48 inches (and above).

Buttweld elbows below 24 inches in diameter are produced by cutting, heating and bending seamless steel pipes; pipe elbows of larger sizes are manufactured, instead, from welded pipes or steel plates. 

The three most common types of elbows in piping are the 45, 90, and 180 degrees (or return elbow), as shown in the image:

Types of elbows in piping
Some special types of pipe elbows are:

  • reducing elbow: a pipe connector with an inlet and an outlet in two different bore sizes is used instead of the combination of a standard elbow and concentric reducer.
  • mitered elbow: large size elbow assembled by joining steel plates

reducing elbow

SHORT VS LONG RADIUS ELBOW

The center to face distance of a long radius pipe elbow is always 1.5 times the nominal pipe size, whereas, for a short radius pipe elbow, the center to face distance is equal to the nominal pipe size.

Example:

  • For a 4 inches long radius (LR) butt weld elbow, the center to face distance is 4 x 25.4 x 1.5 = 152.4 mm;
  • For a short radius butt weld elbow, the center to face distance is instead 4 x 25.4 x 1 = 101.6 mm. Short radius pipe elbows are available only for the 90 and 180-degree configuration (and not for the 45 degrees); instead, long radius elbows are available for all degrees.

LR elbows .       SR elbows

 

PIPE ELBOW MANUFACTURING PROCESS

Buttweld elbows 45 and 90 degrees can be manufactured in different ways, the main ones are the “mandrel process” and the “cold forming” (other methods are the elliptical forming and the double-seam welding method).

Mandrel Process

Pipe Elbow Manufcturing Process (Mandrel Process)

Cold forming

Elbow manufacturing process (Cold forming method)

Quality Control
We have our own Physical & Chemical Testing Center Lab to guarantee our product quality. Our test items & instrument fully meet international standards.

Charpy impact test
Charpy impact test
Corrosion test
Corrosion test
PT penetration inspection
PT penetration inspection
Tensile test
Tensile test
Ultrasonic wt testing
Ultrasonic wt testing
Hardness test
Hardness test
Dimension test
Dimension test
High test
High test
Thickness test
Thickness test
PMI portable spectrometer
Alloy Analyzer (PMI)

Application of 90° Long Radius Elbow

  1. Pipe and Tubes for petrochemical industry
  2. Pharmaceutical industry 
  3. Food industry
  4. Aviation and aerospace industry
  5. Architectural decoration industry
  6. Oil and Gas Pipeline industry

Dimensions Butt Weld Elbows 45°-90° LR and 3D ASME B16.9

Butt Weld Elbows 45-90 ° LR and 3D ASME B16.9
NPS O.D.
D
90°
Long Rad
Center to End
A
45°
Long Rad
Center to End
B
90°
3D
Center to End
A
45°
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
1.1/4 42.2 48 25 95 39
1.1/2 48.3 57 29 114 47
2 60.3 76 35 152 63
2.1/2 73 95 44 190 79
3 88.9 114 51 229 95
3.1/2 101.6 133 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
Butt Weld Elbows 45-90 ° LR and 3D ASME B16.9
NPS O.D.
D
90°
Long Rad
Center to End
A
45°
Long Rad
Center to End
B
90°
3D
Center to End
A
45°
3D
Center to End
B
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 946
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

Dimensions are in millimeters unless otherwise indicated. Wall thickness (t) must be specified by customer.

DIMENSIONAL TOLERANCES OF BUTT WELD ELBOWS – 45° AND 90° – LR AND 3D – ASME B16.9 –

Nominal Pipe Size 1/2 to 2.1/2 3 to 3.1/2 4 5 to 8
Outside Diameter
at Bevel (D)
+ 1.6
– 0.8
1.6 1.6 + 2.4
– 1.6
Inside Diameter at End 0.8 1.6 1.6 1.6
Center to End LR (A/B) 2 2 2 2
Center to End 3D (A/B) 3 3 3 3
Nominal Pipe Size 10 to 18 20 to 24 26 to 30 32 to 48
Outside Diameter
at Bevel (D)
+ 4
– 3.2
+ 6.4
– 4.8
+ 6.4
– 4.8
+ 6.4
– 4.8
Inside Diameter at End 3.2 4.8 + 6.4
– 4.8
+ 6.4
– 4.8
Center to End LR (A/B) 2 2 3 5
Center to End 3D (A/B) 3 3 6 6
Wall Thickness (t) Not less than 87.5% of Nominal Wall Thickness

Dimensional tolerances are in millimeters unless otherwise indicated and are equal ± except as noted.

Note:
MSS SP-43 only covers stainless steel buttweld fittings made for use with Schedule 5S and 10S pipe and Stub Ends suitable for use with Schedule 40S pipe, as defined in ASME B36.19. The dimensions and dimensional tolerances defined in MSS SP-43 are substantially the same as those in ASME B16.9 specifications from NPS 1/2 – NPS 24. Except with regard to the outside diameter at the bevel.

Summary
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Aggregate Rating
5 based on 1 votes
Brand Name
Acero
Product Name
90° Long Radius Elbow
Price
USD 999
Product Availability
Available in Stock

Material

Special Alloys

  • HASTELLOY® X
  • MONEL® R-405
  • MONEL® K-500
  • HASTELLOY® C-276
  • HASTELLOY® C-22
  • HASTELLOY® B-2
  • INCOLOY® 825
  • INCOLOY® 800H / 800HT®
  • INCONEL® 718
  • INCONEL® ALLOY 625
  • INCONEL® ALLOY 601
  • INCONEL® ALLOY 600
  • MONEL® ALLOY 400

ALLOY 20

  • NICKEL 200/201
  • MONEL® R-405
  • MONEL® K-500
  • MONEL® ALLOY 400
  • INCONEL® 718
  • INCONEL® ALLOY 625
  • INCONEL® ALLOY 601
  • INCONEL® ALLOY 600
  • INCOLOY® 825
  • HASTELLOY® X
  • HASTELLOY® C-276
  • HASTELLOY® C-22
  • HASTELLOY® B-2
  • INCOLOY® 800H / 800HT®
  • HASTELLOY® B-3

Duplex Stainless Steel

  • ZERON® 100, SUPER DUPLEX STAINLESS STEEL
  • Super Duplex S32760
  • LDX 2101®, DUPLEX STEEL
  • Duplex S31803
  • SUPER DUPLEX 2507
  • DUPLEX 2205

Stainless Steel

  • STAINLESS STEEL NITRONIC 50HS
  • STAINLESS STEEL NITRONIC 60
  • STAINLESS STEEL NITRONIC 50
  • STAINLESS STEEL 13-8PH
  • STAINLESS STEEL 15-5PH
  • STAINLESS STEEL PRODEC 303
  • STAINLESS STEEL 303
  • STAINLESS STEEL 446
  • STAINLESS STEEL 410S
  • STAINLESS STEEL 410
  • STAINLESS STEEL 304-304H
  • STAINLESS STEEL 17-4
  • STAINLESS STEEL 347
  • STAINLESS STEEL 440C
  • STAINLESS STEEL 309
  • STAINLESS STEEL 316-316l
  • STAINLESS STEEL AL-6XN®
  • STAINLESS STEEL 330
  • STAINLESS STEEL 321
  • 317L STAINLESS STEEL
  • STAINLESS STEEL 310/310S
  • Stainless Steel 304L
  • Stainless Steel 304
  • STAINLESS STEEL 253 MA

Carbon Steel

  • CARBON STEEL PRODUCTS

Titanium

  • 10V-2Fe-3Al
  • 6Al-4V
  • 6Al-4V STA
  • 6Al-4V ELI
  • 6Al-2Sn-4Zr-2Mo


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