180 degree steel pipe elbow

180 degree steel pipe elbow

180 degree steel pipe elbows are metal pipe fittings that change the direction of the pipe on the carbon steel pipe. Connection mode has wire buckle and welding. By angle, there are three most commonly used types, 45 °, 90 °and 180 °.
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180 degree steel pipe elbows are metal pipe fittings that change the direction of the pipe on the carbon steel pipe. Connection mode has wire buckle and welding. By angle, there are three most commonly used types, 45 °, 90 °and 180 °.

In addition, other abnormal angle elbows such as 60 °are included according to the engineering requirements. Elbow materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, non-ferrous metals and plastics.Direct welding (most commonly used) flange connection, hot melt connection, electric melting connection, thread connection and socket connection. According to the production process can be divided into: welding elbows, stamping elbows, push bends, casting elbows and so on. 
assortment
Carbon steel elbow can be divided into long radius elbow and short radius bend according to its curvature radius. A long radius elbow refers to the outer diameter of a tube whose curvature radius is equal to 1.5 times. A short radius bend means that its curvature radius is equal to the outer diameter of the pipe, i.e. R = 1.0 D. (D is the diameter of the elbow and R is the radius of curvature. D can also be expressed by times.) There are about 17, according to the pressure rating, which is the same as the American standard for pipes.for:

According to the process can be divided into: welding elbows, stamping elbows, casting elbows and so on.

Purpose: connect two pipes, change the direction of the pipe, turn to 45 °or 180 °and 90 °or any other angle.

Seamless elbow: elbow is a pipe fitting used in pipe bends. Of all the pipe fittings used in the pipeline system, the largest proportion is about 80%. Usually, different forming processes are chosen for different materials or wall-thickness elbows. The seamless elbow forming process commonly used in manufacturing plants include hot push, stamping, extrusion and so on. The forming process of hot push bend is to use special elbow push machine, core die and heating device to make the billet set on the die move forward under the push of the press, and be heated, expanded and bent in the process of motion.

Stamping forming elbows are the earliest forming processes used in mass production of seamless elbows, which have been replaced by hot push or other forming processes in the production of common specifications, but in some specifications, the number of bends is small. The wall is too thick or too thin. Stamping elbows are divided into cold stamping and hot stamping, usually according to material properties and equipment capacity cold stamping or hot stamping. 



Nominal Diameter



Outside Diameter
at Bevel


Center to End


Center to Center


Back to Face


45°Elbow


 90°Elbow


180°Elbow

B

A

O

K

DN

NPS


Series A


Series B


Long
Radius


Long
Radius


Short
 Radius


Long
Radius


Short
 Radius


Long
Radius

(A Series)
Short
 Radius

15

1/2

21.3

18

16

38

-

76

-

48

-

20

3/4

26.9

25

19

38

-

76

-

51

-

25

1

33.7

32

22

38

25

76

51

56

41

32

1.1/4

42.4

38

25

48

32

95

64

70

52

40

1.1/2

48.3

45

29

57

38

114

76

83

62

50

2

60.3

57

35

76

51

152

102

106

81

65

2.1/2

76.1(73)

76

44

95

64

190

127

132

100

80

3

88.9

89

51

114

76

229

152

159

121

90

3.1/2

101.6

-

57

133

89

267

178

184

140

100

4

114.3

108

64

152

102

305

203

210

159

125

5

139.7

133

79

190

127

381

254

262

197

150

6

168.3

159

95

229

152

457

305

313

237

200

8

219.1

219

127

305

203

610

406

414

313

250

10

273.0

273

159

381

254

762

508

518

391

300

12

323.9

325

190

457

305

914

610

619

467

350

14

355.6

377

222

533

356

1067

711

711

533

400

16

406.4

426

254

610

406

1219

813

813

610

450

18

457.2

478

286

686

457

1372

914

914

686

500

20

508.0

529

318

762

508

1524

1016

1016

762

550

22

559

-

343

838

559

1676

1118

1118

838

600

24

610

630

381

914

610

1829

1219

1219

914

650

26

660

-

406

991

660

1982

1320

-

-

700

28

711

720

438

1067

711

2134

1422

-

-

750

30

762

-

470

1143

762

2286

1524

-

-

800

32

813

820

502

1219

813

2438

1626

-

-

850

34

864

-

533

1295

864

2590

1728

-

-

900

36

914

920

565

1372

914

2744

1828

-

-

950

38

965

-

600

1448

965

2896

1930

-

-

1000

40

1016

1020

632

1524

1016

3048

2032

-

-

1050

42

1067

-

660

1600

1067

3200

2134

-

-

1100

44

1118

1120

695

1676

1118

3352

2236

-

-

1150

46

1168

-

727

1753

1168

3506

2336

-

-

1200

48

1220

1220

759

1829

1219

3658

2440

-

-

180°Elbows Pipe Fittings 2

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