How to get high quality stainless steel elbows?

What are stainless steel elbows?

Stainless steel elbows are curved connecting pieces that join straight lengths of pipe, commonly at a 90° or 45° angle, allowing obstructions to be avoided in plumbing, ventilation, welding, and automotive applications.

stailness elbow 45 - How to get high quality stainless steel elbows?
45 degree

stailness elbow 90 - How to get high quality stainless steel elbows?
90 degree
stailness elbow 180 - How to get high quality stainless steel elbows?
180 degree

Yaang have adopted advanced production equipment to make our short radius elbows (1D D711.2~D1219.2), which can not only improve product quality, but also save raw materials.

elbow thickVSthin - How to get high quality stainless steel elbows?

Thick VS Thin

elbow inside welded - How to get high quality stainless steel elbows?

Elbows Inside welded

Size range:

  • Seamless elbow: 1/2″~24″ DN15~DN600
  • Welding elbow: 6″~72″ DN150~DN1800
  • Max wall thickness: 200mm

Material stainless steel grades:

Also known as “marine grade” stainless steel due to its increased ability to resist saltwater corrosion compared to type 304. SS316 is often used for building nuclear reprocessing plants.

Delivery requirment:

Marking: Yaang, material grade, standard, specification, heat no.
Surface Treatment: Bright annealed, polished outside and inside surface.
Package: knitting strip bundle, wooden box or steel box
Mill test certificate: according to EN 10204 3.2
Inspection: Third party inspection, or by clints
Industrial Processes 
Bending, squeezing, pressing, forging, machining and more
Industries Served
Our pipe elbows are widely used in many industries, such as power generation, petroleum, natural gas, chemicals, shipbuilding, heating, papermaking, metallurgy and so on.

Elbows, Pipe elbows, Elbow fittings

Pipe elbows are used to be installed between two lengths of pipe or tube allowing a change of direction,usually these elbows distinguished by connection ends.

lr 90 elbow little degsign - How to get high quality stainless steel elbows?

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.

Elbows are categorized based on various design features as below:

  • Long Radius (LR) Elbow is also called LR elbow – means the radius is 1.5 times the pipe diameter
    • 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 return bend allows complete reversal of flow.
  • Short Radius (SR) Elbow is also called SR elbow, – means the radius is 1.0 times the pipe diameter
    • Short radiu 45°Elbow: Short radius 45° elbow changes the direction by 45 degrees.
    • Short radius 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.
    • Short radius 180° Elbow: Short Radius 180° return bend allows complete reversal of flow
Size range:

  • Seamless elbow: 1/2″-24″ DN15-DN600
  • Welding elbow: 6″-72″ DN150-DN1800
  • Wall thickness: Sch5-Sch160 XXS
  • External arc length of elbow

Recommended type of pipe elbows:

  • Big diameter elbows
  • Larg diameter elbow
  • Small size elbow
  • Forged Elbow, Elbow Fittings
Materials
  • Carbon steel: ASTM/ASME A234 WPB-WPC
  • Alloy steel: –WP 22-WP 5-WP 91-WP 911
    • ASTM A335 P22
    • ASME SA335 P91 elbow
    • ASTM A234 WP 11
  • 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
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
  • 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
  • ASME B16.9 Butt weld 45 degree Long Radius Elbow Dimensions

Short radius elbows

We have adopted advanced production equipment to make our short radius elbows which can not only improve product quality, but also save raw materials.

Long radius elbows

Long Radius (LR) Elbow is also called LR elbow – means the radius is 1.5 times the pipe diameter. The degree types of long radius pipe elbows as 45°90°180°.

Butt weld 45 degree Long Radius Elbow are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.

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

45 deg long redius dimen - How to get high quality stainless steel elbows?

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 45° 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 tickness 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 ….. ….. …..

The 90 degree Long Radius Elbow manufactured using superior grade raw materials. The 90 degree Long Radius Elbows are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.

Yaang have adopted advanced production equipment to make our 90 degree Short Radius Elbow(1D D711.2~D1219.2), which can not only improve product quality, but also save raw materials.

ASME B16.9 Butt weld 90 degree Long Radius Elbow Dimensions

90 deg long redius dimen - How to get high quality stainless steel elbows?

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 ….. ….. …..

The 180 degree Long Radius Elbows are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.

Yaang have adopted advanced production equipment to make our 180 degree Long Radius Elbow(1D D711.2~D1219.2), which can not only improve product quality, but also save raw materials.

ASME B16.9 Butt weld 180 degree Long Radius Elbow Dimensions

180 deg long redius dimen - How to get high quality stainless steel elbows?

NPS O.D. D 180° Long Radius
Center to Center
O
Back to Face
K
1/2 21.3 76 48
3/4 26.7 76 51
1 33.4 76 56
42.2 95 70
48.3 114 83
2 60.3 152 106
73 190 132
3 88.9 229 159
101.6 267 184
4 114.3 305 210
5 141.3 381 262
6 168.3 457 313
8 219.1 610 414
10 273 762 518
12 323.8 914 619
14 355.6 1067 711
16 406.4 1219 813
18 457 1372 914
20 508 1524 1016
22 559 1676 1118
24 610 1829 1219
ASME B16.9 180° Long Radius Elbow Dimensional Tolerance
For all fittings 180° Returns
Nominal Pipe Size (NPS) Outside Ø 
at Bevel
Inside Ø
at End
Wall Thickness 
t / t1
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 7 7 1
3 a 3 1/2 1 1,6 less 7 7 1
4 +2 -1 1,6 than 7 7 1
5 a 6 +3 -1 1,6 87,50% 7 7 1
8 2 1,6 of nominal 7 7 1
10 +4 -3 3,2 thickness 7 7 2
12 a 18 +4 -3 3,2 10 7 2
20 a 24 +6 -5 4,8 10 7 2
26 a 30 +7 -5 4,8 ….. ….. …..
32 a 48 +7 -5 4,8 ….. ….. …..

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 pipe fitting is called a reducing elbow or reducer elbow.

Short radius elbows (1D D711.2~D1219.2), which can not only improve product quality, but also save raw materials.

The degree types of short radius pipe elbows as below:

  • 45 degree short radius elbow
  • 90 degree Short Radius Elbow
  • 180 degree short radius elbow

45 degree SR elbow

The 45 degree Short Radius Elbow manufactured using superior grade raw materials. Butt weld 45 degree Short Radius Elbow are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.

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

pipe fitting elbow 45degree - How to get high quality stainless steel elbows?45 deg short redius dimen - How to get high quality stainless steel elbows?

Nom. 
Pipe 
Size
Pipe 
Sched. 
or No.
Center- 
to-end 
Dimen.
Outside 
Dia.
Inside 
Dia.
Wall 
Thick.
Approx. 
Weight 
(lb.)
F OD ID T
     STANDARD WEIGHT
1/2 40 5/8 0.840 0.622 0.109 0.1
3/4 40 7/16 1.050 0.824 0.113 0.1
1 40 7/8 1.315 1.049 0.133 0.2
1 1/4 40 1 1.660 1.380 0.140 0.4
1 1/2 40 1 1/8 1.900 1.610 0.145 0.5
2 40 1 3/8 2.375 2.067 0.154 0.9
2 1/2 40 1 3/4 2.875 2.469 0.203 1.5
3 40 2 3.500 3.068 0.216 2.5
3 1/2 40 2 1/4 4.000 3.548 0.226 3.5
4 40 2 1/2 4.500 4.026 0.237 4.8
5 40 3 1/8 5.563 5.047 0.258 7.8
6 40 3 3/4 6.625 6.065 0.280 12
8 40 5 8.625 7.981 0.322 23
10 40 6 1/4 10.750 10.020 0.365 42
12 7 1/2 12.750 12.000 0.375 61
14 30 8 3/4 14.000 13.250 0.375 79
16 30 10 16.000 15.250 0.375 103
18 11 1/4 18.000 17.250 0.375 132
20 20 12 1/2 20.000 19.250 0.375 160
22 20 13 1/2 22.000 21.250 0.375 195
24 20 15 24.000 23.250 0.375 238
     EXTRA STRONG
Nom. 
Pipe 
Size
Pipe 
Sched. 
or No.
Center- 
to-end 
Dimen.
Outside 
Dia.
Inside 
Dia.
Wall 
Thick.
Approx. 
Weight 
(lb.)
F OD ID T
1/2 80 5/8 0.840 0.546 0.147 0.2
3/4 80 7/16 1.050 0.742 0.154 0.3
1 80 7/8 1.315 0.957 0.179 0.4
1 1/4 80 1 1.660 1.278 0.191 0.5
1 1/2 80 1 1/8 1.900 1.500 0.200 0.6
2 80 1 3/8 2.375 1.939 0.218 1.1
2 1/2 80 1 3/4 2.875 2.323 0.276 2.1
3 80 2 3.500 2.900 0.300 3.5
3 1/2 80 2 1/4 4.000 3.364 0.318 4.8
4 80 2 1/2 4.500 3.826 0.337 6.5
5 80 3 1/8 5.563 4.813 0.375 11
6 80 3 3/4 6.625 5.761 0.432 18
8 80 5 8.625 7.625 0.500 35
10 60 6 1/4 10.750 9.750 0.500 56
12 7 1/2 12.750 11.750 0.500 80
14 8 3/4 14.000 13.000 0.500 100
16 40 10 16.000 15.000 0.500 131
18 11 1/4 18.000 17.000 0.500 172
20 30 12 1/2 20.000 19.000 0.500 210
22 30 13 1/2 22.000 21.000 0.500 259
24 15 24.000 23.000 0.500 302
Ansi 16.9 tolerances – 45 Degree short radius elbow
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 tickness 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 ….. ….. …..

90 degree Short Radius Elbow

Yaang are Manufacturer of 90 degree Short Radius Elbow. The 90 degree Short Radius Elbow manufactured using superior grade raw materials. The 90 degree Short Radius Elbows are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.

ASME B16.9 90 degree Short Radius Elbow Dimensional Tolerance

long radius elbows 90 - How to get high quality stainless steel elbows?90 deg short redius dimen - How to get high quality stainless steel elbows?

NPS O.D.
D
Center-to-End
A
1 33.4 25
42.2 32
48.3 38
2 60.3 51
73 64
3 88.9 76
101.6 89
4 114.3 102
5 141.3 127
6 168.3 152
8 219.1 203
10 273 254
12 323.8 305
14 355.6 356
16 406.4 406
18 457 457
20 508 508
22 559 559
24 610 610
ASME B16.9 90°Short Radius Elbow Dimensional Tolerance
Nominal Pipe Size 1/2 to 2½ 3 to 3½ 4 5 to 8 10 to 18 20 to 24 26 to 30 32 to 48
Outside Diameter
at Bevel (D)
+ 1.6
– 0.8
1.6 1.6 + 2.4
– 1.6
+ 4
– 3.2
+ 6.4
– 4.8
+ 6.4
– 4.8
+ 6.4
– 4.8
Inside Diameter at End 0.8 1.6 1.6 1.6 3.2 4.8 + 6.4
– 4.8
+ 6.4
– 4.8
Center-to-End (A) 2 2 2 2 2 2 3 5
Wall Thickness (t) Not less than 87.5% of Nominal Wall Thickness

180 degree Short Radius Elbow

long radius elbows 180 - How to get high quality stainless steel elbows?

Yaang are Manufacturer of 180 degree Short Radius Elbow. The 180 degree Short radius Elbow manufactured using superior grade raw materials. The 180 degree Short radius Elbows are used for connecting pipes of different diameters and find wide applications in various chemicals, construction industries, paper, cement & ship builders.

ASME B16.9 Butt weld 180 degree Short radius Elbow Dimensions

180 deg short redius dimen - How to get high quality stainless steel elbows?

ASME B16.9 180 degree Short radius Elbow Dimensional Tolerance
NPS O.D.
D
180° Short radius 180° Short Radius
Center to
Center
O
Back to
Face
K
Center to
Center
O
Back to
Face
K
1/2 21.3 76 48
3/4 26.7 76 51
1 33.4 76 56 51 41
42.2 95 70 64 52
48.3 114 83 76 62
2 60.3 152 106 102 81
73 190 132 127 100
3 88.9 229 159 152 121
101.6 267 184 178 140
4 114.3 305 210 203 159
5 141.3 381 262 254 197
6 168.3 457 313 305 237
8 219.1 610 414 406 313
10 273 762 518 508 391
12 323.8 914 619 610 467
14 355.6 1067 711 711 533
16 406.4 1219 813 813 610
18 457 1372 914 914 686
20 508 1524 1016 1016 762
22 559 1676 1118 1118 838
24 610 1829 1219 1219 914
ASME B16.9 180° Short Radius Elbow Dimensional Tolerance
For all fittings 180° Returns
Nominal Pipe Size (NPS) Outside Ø 
at Bevel
Inside Ø
at End
Wall Thickness 
t / t1
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 7 7 1
3 a 3 1/2 1 1,6 less 7 7 1
4 +2 -1 1,6 than 7 7 1
5 a 6 +3 -1 1,6 87,50% 7 7 1
8 2 1,6 of nominal 7 7 1
10 +4 -3 3,2 thickness 7 7 2
12 a 18 +4 -3 3,2 10 7 2
20 a 24 +6 -5 4,8 10 7 2
26 a 30 +7 -5 4,8 ….. ….. …..
32 a 48 +7 -5 4,8 ….. ….. …..

pipe elbow little - How to get high quality stainless steel 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.

Forged Elbow, Elbow Fittings

forged elbows - How to get high quality stainless steel elbows?We are manufacturer of Forged Elbow, Threaded Pipe Fitting SS304 and supply high quality Forged Elbow in both large and small quantities worldwide and offer you the best prices in the market.

How to Calculate a Pipe Bend?

Measure the required length of the pipe to be installed, keeping in mind the extra length required where the pipe will be inserted into the fitting. Mark this length on the pipe.

Whether you are bending pipe for running electrical conduit or a metal project, calculating the bend for the start and end point can be an important factor. While there are different types of pipe benders on the market, they all share a common identification for the operation. Identified on all pipe benders is the size of pipe the unit will bend along with a number called the “take up.” The take up measurement is used for adding or deducting an allowance in the overall length of the bend. By following a basic process, you can calculate pipe bends regardless of the type of bender or the diameter of pipe.

Instructions

  1. Identify the take up measurement that is located on the pipe-bending shoe itself. This is the addition or deduction of measurement to the length of pipe from the front mark on the bending shoe. Also be aware that there is a second centre-of-bend mark located approximately in the centre of the bending shoe. Also located along the running length of the shoe are angle markings with lines. These numbers and lines correspond to actual angles that can be bent into the pipe by aligning the pipe with the angled line marked on the outside of the shoe.

  2. Bend a 90-degree angle on a ½-diameter pipe with a ½-inch bender. The process will remain the same for different sized pipes and benders, but only the take up measurement will be different. Identified on the shoe for the ½-inch pipe may be the wording “stub take up 5 inches from arrow or line.” The 5 inches is the amount you will deduct from the overall length of the 90-degree bend measurement.

  3. Use the measuring tape and pencil and place a mark at 12 inches from the end of the pipe. This will be the distance from the bend to the end of the pipe. By using the deduction measurement on the shoe, measure back 5 inches from the 12-inch mark and make a solid pencil line.

  4. Lay the pipe on a level surface and insert the pipe into the bender. The solid pencil mark should be placed 5 inches back from the 12-inch mark and should be aligned with the front mark or arrow on the bending shoe. Pull back on the handle in a smooth motion until the pipe sits at a 90-degree position to the level surface. Place the small level against the upright portion of the pipe and check for level. This will give you a perfect 90-degree bend. Check the height of the overall bend by placing the end of the tape measure on the level base and measure the end of the pipe. It should read 12 inches exactly.

  5. Practice with other angled bends by using the deduction measurement and the centre of the bend mark on the shoe. All pipe benders may have their own quirks and slight measurement adjustments that will have to be done. The actual end result also depends on how well and secure you hold the pipe in the bender, prior to the first bend you place on the pipe.

The ends may be machined for butt welding, threaded (usually female), or socketed, etc. When the two ends differ in size, the fitting is called a reducing elbow or reducer elbow.

How to distinguish between pipe elbow and pipe bend?
“All pipe bends are pipe elbows but all pipe elbows are not pipe bends.”
Infact, the pipe is bent to form an pipe elbow.
Elbows are pre-fabricated and are firm in design.
There are issues with bends since the tickness at the bend radius reduces as we bend the pipe.
Pipe bends typically have a minimum bending radius of 1.5 times pipe radius (R). If this bending radius is less than 1.5R, it is called pipe elbow. Reference to any international / industry standard need to be traced. 1.5, 3 and 4.5 R are the most common bending radii in industry.
Sharp bends are normally called pipe elbows.
An pipe elbow is also typically a sharp 90 degrees and often is a separate piece.
A pipe bend typically flows smoother since there are not irregular surfaces on the inside of the pipe, nor does the fluid have to change direction abruptly.
The most basic difference of them is the pipe elbow relatively short than bend, R = 1D to 2 D is elbow More than 2D is pipe bend. In the production process, cold pipe bends can use Bending Machine to bend by ready-made straight bend. One-time completed also don’t need second corrosion. But elbow need manufacturers make to order, to do anti-corrosion, order cycle is long. Pipe elbow price is higher than bend. But cost performance is much higher than bend. It is well-known that bend do not have anticorrosive processing is easy damaged, but the price is cheap so are  used very much in some demand which not very high engineering.
In the west-east gas transmission of course, cold bends cost is low. elbow need manufacturers make to order, needs corrosion, order cycle is long,but cold bends can use ready-made straight bend by Bending Machine to bend. One-time completed also don’t need second corrosion. The cold bend construction technology need follow oil standard .west-east gas transmission have the enterprise standard,but we can use either pipe elbow nor pipe bend in open area.

Attention when installing stainless steel elbow

If the stainless steel elbow has been placed for a long time, it should be regularly checked before installation, long-term exposure to the surface must be regularly cleaned, remove the dirt, regular storage in the indoor ventilation place, prohibit the stack or open storage. Always keep the stainless steel elbow ventilation, keep it clean and regular, according to the correct storage method.
Before installing the stainless steel elbow, it is necessary to carefully check whether the standards of the stainless steel elbow meet the requirements. For example, whether the diameter is in accordance with the application requirements and removing the possible defects in the transport process and removing the dirt from the stainless steel elbow. Good preparation before installation, need to prepare the work properly.
Stainless steel elbow in the device, you can put the stainless steel elbow by way of direct installation on the pipeline, in accordance with the requirements of the installation. Under normal circumstances, the stainless steel elbow can be installed in the appropriate place on the pipeline, but need to pay attention to is to facilitate the operation, pay attention to the stainless steel elbow in the medium flow should be from the valve below the flow, the stainless steel elbow can only level installation. Stainless steel elbow in the installation should pay attention to sealing performance, to avoid leakage of appearance, thus affecting the normal work of the pipeline.

Source: China Stainless Steel Elbows Manufacturer – Yaang Pipe Industry Co., Limited (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@steeljrv.com

Please notice that you might be interested in the other technical articles we’ve published:

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References:

  • https://www.yaang.com

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