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4. ASME B16.11 Forged steel fittings

Socket Welding Elbow 45°

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Description

Socket Welding Elbow 45° is a pipe fitting used to change the flow direction of liquid or gas in a piping system. Designed with a 45-degree angle, it helps change the flow direction without significantly affecting the pressure or speed of the flow. This type of elbow is usually made from carbon steel, stainless steel, or other alloys to ensure durability and corrosion resistance.

Applications

  • Oil and gas industry : Used in oil and gas pipeline systems.
  • Chemical industry : Used in chemical plants to transport corrosive liquids and gases.
  • Refineries : Used in crude oil refining and transportation systems.
  • Energy industry : Used in thermal and hydroelectric power plants to conduct water or steam.
  • Construction and water supply and drainage : Used in water supply and drainage systems for civil and industrial works.

Standards

Socket Welding Elbow 45° usually complies with international standards to ensure quality and safety in use. Socket Welding Elbow 45° needs to comply with specifications such as inside diameter, length, bend radius, and other parameters according to ASME B16.11 standard. 

  • Nominal Size (NPS) : 1/8 to 4 inch.
  • Working pressure : 3000#, 6000#, 9000#.
  • Materials : Carbon steel, stainless steel, special alloys.

Butt-Weld Elbow 45° Dimensions and Thickness Chart (ASME B16.11)

NPS (inches)

Inside diameter (A)

Length (B)

Thickness (C)

Radius of curvature (R)

1/2

21.34

28

10

22

3/4

26.67

33

13

25

1

33.40

38

13

28

1 1/4

42.16

44

15

31

1 1/2

48.26

51

16

33

2

60.33

60

19

38

2 1/2

73.03

70

22

44

3

88.90

83

25

51

4

114.30

105

29

64

Note:

  • NPS (Nominal Pipe Size) : Nominal size of pipe.
  • Inside diameter (A) : Inside diameter of the elbow.
  • Length (B) : Length of the straight part of the elbow.
  • Thickness (C) : Thickness of the pipe wall.
  • Radius of bend (R) : Radius of the curved part of the elbow.

For larger sizes from 1/2 inch to 24 inches, we will refer to ASME B16.9 for butt-weld fittings.

Butt-Weld Elbow 45° Dimensions and Thickness Chart (ASME B16.9)

NPS (inch)

OD (mm)

Sch 10S Thickness (mm)

Sch 40 Thickness (mm)

Sch 80 Thickness (mm)

Sch 160 Thickness (mm)

1/2

21.3

1.65

2.77

3.73

4.78

3/4

26.7

1.65

2.87

3.91

5.56

1

33.4

1.65

3.38

4.55

6.35

1 1/4

42.2

1.65

3.56

4.85

6.35

1 1/2

48.3

1.65

3.68

5.08

7.14

2

60.3

1.65

3.91

5.54

8.74

2 1/2

73.0

2.11

5.16

7.01

9.53

3

88.9

2.11

5.49

7.62

11.13

4

114.3

2.11

6.02

8.56

13.49

5

141.3

2.77

6.55

9.53

15.88

6

168.3

2.77

7.11

10.97

18.26

8

219.1

2.77

8.18

12.70

21.44

10

273.0

3.40

9.27

15.09

25.40

12

323.8

3.96

10.31

17.48

30.96

14

355.6

3.96

11.13

19.05

31.75

16

406.4

4.78

12.70

21.44

34.93

18

457.2

4.78

14.27

23.83

38.10

20

508.0

5.54

15.09

26.19

41.28

24

610.0

6.35

17.48

30.96

47.80

Note:

  • OD (Outside Diameter) : Outer diameter of the pipe.
  • Sch : Pipe Schedule, determines the thickness of the pipe wall.

Note:

  • OD (Outside Diameter) : Outer diameter of the pipe.
  • Sch : Pipe Schedule, determines the thickness of the pipe wall.

Material Summary for Socket Welding Elbow 45°

Material Type Material Code Main ingredient Characteristic Application
Carbon steel ASTM A105 Fe, C High durability, low price Oil and gas, chemical industry
Stainless Steel ASTM A182 F304/F316 Fe, Cr, Ni Corrosion resistant, high durability Food and pharmaceutical industry
Steel Alloy ASTM A182 F11/F22 Fe, Cr, Mo Heat resistant, pressure resistant Energy industry
Brass ASTM B62 Cu, Zn Good corrosion resistance Plumbing, HVAC
Nickel Alloy ASTM B564 (Inconel) Ni, Cr, Mo Heat resistant, high corrosion resistance Chemical industry, marine
Duplex Stainless Steel ASTM A182 F51/F53 Fe, Cr, Ni, Mo High corrosion resistance, high durability Petrochemical industry, marine
Super Duplex Stainless Steel ASTM A182 F55 Fe, Cr, Ni, Mo, N Corrosion resistant, extremely durable Oil and gas, chemical industry

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