Long radius pipe elbow

Long Radius Elbow is also called LR elbow,long radius elbow means the bending radius of elbow is 1.5 time to the diameter of the elbow
Our pipe elbows are widely used in many industries, such as power generation, petroleum, natural gas, chemicals, shipbuilding, heating, papermaking, metallurgy and so on.

The degree types of long radius pipe elbows as below:

Wall Thickness
sch10, sch20, sch30, std, sch40, sch60, xs, sch80, sch100, sch120, sch140, sch160, xxs, sch5s, sch20s, sch40s, sch80s
Max wall thickness: 200mm

Materials
Carbon steel: ASTM/ASME A234 WPB-WPC
Alloy steel: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP 911
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
Low temperature steel: ASTM/ASME A402 WPL 3-WPL 6
High performance steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Standards
GB/T12459-2005 GB/T13401-2005 GB/T10752-2005 SH/T3408-1996 SH/T3409-1996
SY/T0609-2006 SY/T0518-2002 SY/T0510-1998
DL/T695-1999 GD2000 GD87-1101
HG/T21635-1987 HG/T21631-1990
ASME B16.9-2007 ASME B16.25-2007
MSS SP 75-2008 MSS SP 43-2008
CSA Z245.11-05-2005
EN10253-1-1999 EN10253-2-2007 EN10253-3-2008 EN10253-4-2008
DIN2605-1-1992 DIN2605-2-1995
BS1640-1-1962 BS1640-2-1962 BS1640-3-1968 BS1640-4-1968 BS1965-1-1963
GOST17375-2001
AFNOR NF A 49-289-1990 AFNOR NF A 49-170-1-1999 AFNOR NF A 49-170-2-2009 AFNOR NF A 49-170-3-2009 AFNOR NF A 49-170-4-2009 ISO3419-1981 ISO5251-1981
JIS B2311-2009 JIS B2312-2009 JIS B2313-2009

Industrial Processes
Bending, squeezing, pressing, forging, machining and more

ASME B16.9 Butt weld 45 degree Long Radius Elbow Dimensions

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

 

ASME B16.9 90° Long Radius Elbow Dimensional Tolerance

DIMENSIONAL TOLERANCES – ELBOWS
For all fittings Elbows 90/45 deg 180° Returns
Nominal Pipe Size (NPS) Outside Ø
at Bevel
Inside Ø
at End
Wall Thickness
t / t1
Center to End Dim. A-B-C-M Center to Center Dim.
O
Back to Face Dim.
K
Align- ment of Ends
U
1/2 a 2 1/2 1 0,8 Not 2 7 7 1
3 a 3 1/2 1 1,6 less 2 7 7 1
4 +2 -1 1,6 than 2 7 7 1
5 a 6 +3 -1 1,6 87,50% 2 7 7 1
8 2 1,6 of nominal 2 7 7 1
10 +4 -3 3,2 thickness 2 7 7 2
12 a 18 +4 -3 3,2 3 10 7 2
20 a 24 +6 -5 4,8 3 10 7 2
26 a 30 +7 -5 4,8 3 ….. ….. …..
32 a 48 +7 -5 4,8 5 ….. ….. …..

 

Angularity Tolerances
ND Max off angle Max off plane
Q P
1/2 a 4 1 2
5 a 8 2 4
10 a 12 3 5
14 a 16 3 7
18 a 24 4 10
26 a 30 5 10
32 a 42 5 13
44 a 48 5 20

 

Elbows Weight

WEIGHTS OF FITTINGS
NPS
inches
ELBOWS
LR 90°
ELBOWS
SR 90°
Sch.
5S
Sch.
10S
Sch.
40S
Sch.
80S
Sch.
5S
Sch.
10S
Sch.
40S
Sch.
80S
1/2 0.05 0.06 0.08 0.10 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 0.20 0.06 0.10 0.12 0.13
1 1/4 0.13 0.20 0.25 0.35 0.09 0.13 0.17 0.12
1 1/2 0.18 0.30 0.40 0.50 0.12 0.20 0.27 0.33
2 0.30 0.50 0.70 0.90 0.20 0.33 0.47 0.60
2 1/2 0.60 0.85 1.35 1.80 0.40 0.60 0.90 1.20
3 0.90 1.30 2.00 2.90 0.60 0.90 1.35 1.90
4 1.40 2.00 4.00 5.90 0.90 1.35 2.65 3.90
5 2.90 3.60 6.50 9.70 1.95 2.40 4.35 6.50
6 4.00 5.00 10.5 16.0 2.70 3.35 7.00 10.5
8 7.40 10.0 21.5 33.5 4.90 6.70 14.5 22.5
10 13.6 16.8 38.5 52.5 9.10 11.2 25.6 35.0
12 23.4 27.0 59.0 79.0 15.6 18.0 39.5 53.0
14 29.0 35.0 70.0 94.0 19.3 23.5 47.0 63.0
16 41.3 47.0 95.0 125 27.5 31.5 63.5 84.0
18 51.8 59.0 120 158 34.5 39.5 80.0 105
20 73.0 85.0 146 194 49.0 57.0 98.0 129
24 122 140 210 282 82.0 94.0 140 188
Approximate weights in kg, density 8 kg/dm3

Abrasion resistant pipe elbows

Related informations of Abrasion resistant pipe

Ceramic (Corundum: a-Al2O3) lined abrasion resistant straight pipe and fittings are lined with highly abrasion resistant ceramic by SHS ——-Self-propagating High-temperature Synthetic process. The composite pipes have good corrosion-resistant.


The ends of pipe elbows may be machined for butt welding , threaded , or socketed , so the elbows are consist of butt weld,thread elbow, socket elbow and other series.

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