ASME B16.9 Long Radius Elbow Pipe Fitting Manufacturers, Stockist, Suppliers – Seamless Elbow, Welded Elbow, Large Diameter Fabricated Elbow Factory

  • We are a specialist manufacturer of long radius elbows or pipe elbows in size range of 1/2″ to 48″ in accordance with ASME B16.9. We also produce custom size elbows as per design or drawing from our customers. Elbows can be manufactured in seamless, welded or fabricated form. While seamless elbows can be produced upto size of 24″, we can produce welded and fabricated reducers upto a size range of 48″ or even higher in some cases.
  • A pipe elbow is a pipe fitting that helps an engineer to change the direction of the pipe in a piping system. According to the angle, there are three most commonly used elbows 45°, 90°, and 180° according to engineering needs. An elbow is one of the most commonly used type of buttweld pipe fittings, produce as per ASME B16.9 dimensional specifications.
  • What is a Long Radius Elbow?
    • The center to face distance for a “long” radius elbow, the LR radius elbows have a center to end distance that is 1.5 times the NPS in inches (R = 1.5D), if it is more than 1.5 times, it is a bend. D is the diameter of the elbow. Long radius elbows are more commonly used compared to short radius elbows. Generally, the default is also a long radius. Where the pressure is high or the flow rate is high, a long radius is used. If the resistance of the solid conveying pipe is strict, a larger radius elbow is used.
    • L/R 45°Elbow – Long radius 45 degree elbow changes the direction by 45 degrees.
    • L/R 90°Elbow – Long radius 90 degree elbow changes the direction by 90 degrees.
    • L/R 180°Elbow – Long radius 180 degree elbow changes the direction by 180 degrees.
  • What is a Short Radius Elbow?
    • Short radius elbow’s radius is equal to the NPS in inches (R = 1.0D). Short radii are generally used in low pressure fluids or where the elbows are limited during installation. Long-radius elbows are preferred if there are no conditions or are not specified in the contract.
    • S/R 45°Elbow – Short radius 45° elbow changes the direction by 45 degrees.
    • S/R 90°Elbow – Short Radius 90° elbow is same as LR90 except for the measurement between end of elbow to center line is 1 x NPS.
    • S/R 180°Elbow- Short Radius 180° return bend allows complete reversal of flow.

Long Radius Elbow Production Range & Product Specifications

Product Long Radius Elbow
Type Seamless, Pipe Welded, Fabricated
Size Seamless: 1/2″ – 24″; welded: 8″ – 100″
Thickness 1mm to 25mm
Standards ASME B16.9, DIN, ISO, ASTM
Surface Finish Annealed & Pickled, Transparent oil, Black Oil or Hot Dip Galvanized
Test Certificate EN 10204 3.1
  • Please contact us for any further question or inquiry regarding pipe elbows. We will promptly reply to you and offer you a reasonable price. We can manufacture long radius and short radius elbows in stainless steel, alloy steel and carbon steel. We provide these pipe fittings at market leading rates and we also offer price guarantee for all the products we offer to sale.

Material Grades for Producing Long Radius Elbows

Stainless Steel 304, 304L, 306, 316L, 304H, 309S, 309H, 310S, 310H, 316TI, 316H, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L, ASTM A312/A403 TP304, TP304L, TP316, TP316L
Duplex & Super Duplex Steel UNS S31803, UNS S32205, UNS S32750, UNS S32760
Carbon Steel ASTM/ ASME A 105, ASTM/ ASME A 350 LF 2, ASTM / ASME A 53 GR. A & B, ASTM A 106 GR. A, B & C. API 5L GR. B, API 5L X 42, X 46, X 52, X 60, X 65 & X 70. ASTM / ASME A 691 GR A, B & C
Alloy Steel ASTM / ASME A 182, ASTM / ASME A 335, ASTM / ASME A 234 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A 691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91
Copper Alloy Steel ASTM/ASME SB 111 UNS NO. C10100, C10200, C10300, C10800, C12000, C12200, C70600, C71500, ASTM / ASME SB 466 UNS NO. C70600 ( CU -NI- 90/10), C71500 ( CU-NI- 70/30)
Nickel Alloy Steel ASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472, UNS 2200 (NICKEL 200) , UNS 2201 (NICKEL 201 ) , UNS 4400 (MONEL 400 ) , UNS 8020 ( ALLOY 20 / 20 CB 3 ) , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 (INCONEL 601) , UNS 6625 (INCONEL 625) , UNS 10276 (HASTELLOY C 276)

Dimensions of ASME B16.9 Long Radius Elbows

Drawing of ASME B16.9 Long Radius Elbows
Nominal Size Outside Diameter at Bevel Center to End
NPS mm. 90 deg Elbows, A 45 deg Elbows, B
in. mm. mm.
in. in.
1/2 21.3 38 16
0.84 1.5 0.62
3/4 26.7 38 19
1.05 1.5 0.75
1 33.4 38 22
1.32 1.5 0.88
1 1/4 42.2 48 25
1.66 1.88 1
1 1/2 48.3 57 29
1.9 2.25 1.12
2 60.3 76 35
2.38 3 1.38
2 1/2 73 95 44
2.88 3.75 1.75
3 88.9 114 51
3.5 4.5 2
3 1/2 101.6 133 57
4 5.25 2.25
4 114.3 152 64
4.5 6 2.5
5 141.3 190 79
5.56 7.5 3.12
6 168.3 229 95
6.62 9 3.75
8 219.1 305 127
8.62 12 5
10 273 381 159
10.75 15 6.25
12 323.8 457 190
12.75 18 7.5
14 355.6 533 222
14 21 8.75
16 406.4 610 254
16 24 10
18 457 686 286
18 27 11.25
20 508 762 318
20 30 12.5
22 559 838 343
22 33 13.5
24 610 914 381
24 36 15
26 660 991 406
26 39 16
28 711 1067 438
28 42 17.25
30 762 1143 470
30 45 18.5
32 813 1219 502
32 48 19.75
34 864 1295 533
34 51 21
36 914 1372 565
36 54 22.25
38 965 1448 600
38 57 23.62
40 1016 1524 632
40 60 24.88
42 1067 1600 660
42 63 26
44 1118 1676 695
44 66 27.38
46 1168 1753 727
46 69 28.62
48 1219 1829 759
48 72 29.88

Long Radius & Short Radius 90 Degree Elbow Weights (KGS)

WEIGHTS OF FITTINGS
NPS ELBOWS ELBOWS
inches LR 90° SR 90°
  Sch. Sch. Sch. Sch. Sch. Sch. Sch. Sch.
  5S 10S 40S 80S 5S 10S 40S 80S
1/2 0.05 0.06 0.08 0.1 0.03 0.04 0.05 0.07
3/4 0.06 0.07 0.09 0.11 0.04 0.05 0.06 0.07
1 0.09 0.15 0.18 0.2 0.06 0.1 0.12 0.13
1 1/4 0.13 0.2 0.25 0.35 0.09 0.13 0.17 0.12
1 1/2 0.18 0.3 0.4 0.5 0.12 0.2 0.27 0.33
2 0.3 0.5 0.7 0.9 0.2 0.33 0.47 0.6
2 1/2 0.6 0.85 1.35 1.8 0.4 0.6 0.9 1.2
3 0.9 1.3 2 2.9 0.6 0.9 1.35 1.9
4 1.4 2 4 5.9 0.9 1.35 2.65 3.9
5 2.9 3.6 6.5 9.7 1.95 2.4 4.35 6.5
6 4 5 10.5 16 2.7 3.35 7 10.5
8 7.4 10 21.5 33.5 4.9 6.7 14.5 22.5
10 13.6 16.8 38.5 52.5 9.1 11.2 25.6 35
12 23.4 27 59 79 15.6 18 39.5 53
14 29 35 70 94 19.3 23.5 47 63
16 41.3 47 95 125 27.5 31.5 63.5 84
18 51.8 59 120 158 34.5 39.5 80 105
20 73 85 146 194 49 57 98 129
24 122 140 210 282 82 94 140 188
Approximate weights in kg, density 8 kg/dm3