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4. ASME B16.11 Forged steel fittings

Threaded Elbow 90°

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Description

Threaded Elbow 90° is a type of pipe fitting with a 90-degree angle design, using threads to connect pipe sections together. This fitting is usually made from materials such as stainless steel, carbon steel, copper, or plastic. The threads on the fitting make it easy to install and remove without the need for welding.

Applications

Threaded Elbow 90° is widely used in many industrial and civil fields, including:

  • Plumbing: Used to redirect flow in water supply and drainage systems.
  • Oil and gas industry: Used in oil and gas transportation systems.
  • Chemical industry: Used in chemical handling and transportation systems.
  • HVAC System: Used in air conditioning and ventilation systems.
  • Fire extinguishing system: Used in automatic fire extinguishing systems.

Standards

ASME B16.11 is a standard established by the American Society of Mechanical Engineers to specify dimensional, material, design, tolerance, and testing requirements for threaded fittings, including the 90° Threaded Elbow.

  • Nominal Size (NPS): Determines the size of the pipe the fitting will connect to.
  • Body size: The length, height and other relevant dimensions of the fittings shall comply with the values ​​specified in the standard.
  • Tolerances: Dimensional tolerances must be within acceptable ranges to ensure compatibility and assembly capability.
  • Materials: Stainless steel, carbon steel, copper, plastic
  • Working pressure: Depends on material and size of fittings

Threaded Elbow 90° Dimensions and Thickness Chart

NPS (inches)

Outer diameter (OD) (mm)

Length (A) (mm)

Length (B) (mm)

Thickness (C) (mm)

1/2

21.34

38.1

21.3

2.77

3/4

26.67

38.1

21.3

2.87

1

33.40

47.6

25.4

3.38

1-1/4

42.16

50.8

28.4

3.56

1-1/2

48.26

52.6

31.8

3.68

2

60.33

57.9

35.1

3.91

2-1/2

73.03

69.9

41.3

5.16

3

88.90

76.2

47.6

5.49

4

114.30

88.9

57.2

6.02

Note:

  • NPS (Nominal Pipe Size): Nominal size of pipe, commonly used in piping systems.
  • Outside Diameter (OD): The outside diameter of the pipe connected to the elbow.
  • Length (A): Length of elbow body from joint to 90° angle.
  • Length (B): Length from center of elbow to connection point.
  • Thickness (C): Thickness of elbow pipe wall.

Create material summary table of Threaded Elbow 90°

Material Material code Description Popular Applications
Stainless Steel ASTM A182 Stainless steel, anti-corrosion, good heat resistance Chemical, food, pharmaceutical, petroleum industry
Carbon steel ASTM A105 Carbon steel, high strength, low cost Industrial piping systems, water systems, oil and gas
Steel alloy ASTM A182 Alloy steel, increased strength, heat resistance and high pressure resistance Oil, gas, energy, chemical industry
Brass ASTM B16 Copper and zinc, good corrosion resistance, easy to process Water system, gas system, light industry
Nickel alloy ASTM B564 Nickel alloy, high corrosion resistance, good heat resistance Chemical, pharmaceutical, aviation, maritime industry
Inconel ASTM B564 Nickel-chromium alloy, high heat and corrosion resistance Chemical, petroleum, aviation industry
Monel ASTM B564 Nickel-copper alloy, very good corrosion resistance in harsh environments Chemical, marine, oil and gas industry
Duplex stainless steel ASTM A182 Dual stainless steel, corrosion resistant and durable Oil and gas, marine, chemical industry
Super duplex stainless steel ASTM A182 Super duplex stainless steel, extremely high strength and corrosion resistance Oil and gas, marine, chemical industry
Galvanized steel ASTM A105 (galvanized) Galvanized carbon steel, enhanced corrosion resistance Water systems, construction, light industry
Aluminum ASTM B241 Light, good corrosion resistance, easy to process Light industry, gas systems, aviation
PVC (Polyvinyl Chloride) ASTM D2466 PVC plastic, good corrosion resistance, light weight, low cost Water system, wastewater treatment, light industry
CPVC (Chlorinated PVC) ASTM F439 CPVC plastic, improved heat resistance compared to PVC Hot water system, chemical industry

Note:

  • ASTM: American Society for Testing and Materials, an international organization that develops and publishes technical standards.
  • Common applications are listed based on material properties and their applicability in different industries.
  • Material selection should be based on the specific requirements of the system, including operating temperature, pressure, corrosive environment, and other factors.

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