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Welded Elbows

Welded Elbows Specifications

Material Grades

  • Stainless Steel
  • ASTM A403 WP304
  • ASTM A403 WP304L
  • ASTM A403 WP304H
  • ASTM A403 WP316
  • ASTM A403 WP316L
  • ASTM A403 WP316H
  • ASTM A403 WP316Ti
  • ASTM A403 WP317L
  • ASTM A403 WP347
  • ASTM A403 WP904L
  • Inconel
  • Incoloy
  • Hastelloy
  • Monel

Welded Elbow Types

  • Welded 45° Elbow
  • Welded 90° Elbow
  • Welded 180° Return
  • Long Radius Elbow
  • Short Radius Elbow
  • 1.5D Long Radius Elbow
  • 1D Short Radius Elbow
  • 3D Elbow
  • 5D Elbow
  • Custom Radius Elbow
  • Fabricated Welded Elbow
  • Heavy Wall Welded Elbow

Manufacturing Standards

  • ASME B16.9
  • ASME B16.28
  • ASME B16.25
  • MSS SP-43
  • MSS SP-75
  • ASTM A403
  • ASTM A234
  • ASTM A420
  • ASTM A815
  • JIS B2312
  • JIS B2313
  • DIN 2605
  • DIN 2615
  • EN 10253-1
  • EN 10253-2

Size & Schedule

  • Welded Construction: 8" to 48"
  • General Butt Weld Range: 1/2" to 48"
  • Schedule 5S
  • Schedule 10S
  • Schedule 20S
  • Schedule 30
  • Schedule STD
  • Schedule 40S
  • Schedule 60
  • Schedule XS
  • Schedule 80S
  • Schedule 100
  • Schedule 120
  • Schedule 140

Radius & Configuration

  • Long Radius (LR)
  • Short Radius (SR)
  • 1D Radius
  • 1.5D Radius
  • 2D Radius
  • 3D Radius
  • 5D Radius
  • 6D Radius
  • 10D Radius
  • 15D Radius
  • 20D Radius
  • Custom Radius

Connection & End Type

  • Butt Weld Ends
  • Welded Ends
  • Beveled Ends
  • ASME B16.25 Bevel
  • Plain Ends
  • Weldable Ends
  • Custom End Preparation

Manufacturing Process

  • Welded Fabrication
  • Hot Forming
  • Cold Forming
  • Mandrel Forming
  • Segmental Fabrication
  • Induction Bending
  • Welding
  • Heat Treatment
  • Solution Annealing
  • End Preparation
  • Custom Fabrication

Mechanical Properties

  • Tensile Strength: 485 MPa Min.
  • Yield Strength: 170 MPa Min.
  • Elongation: 35% Min.
  • Hardness: 192 HBW Max.
  • Material: ASTM A403 WP304L
  • UNS: S30403

Chemical Composition

  • Carbon: 0.030% Max.
  • Chromium: 18.0–20.0%
  • Nickel: 8.0–12.0%
  • Manganese: 2.00% Max.
  • Silicon: 0.75% Max.
  • Phosphorus: 0.045% Max.
  • Sulfur: 0.030% Max.
  • Nitrogen: 0.10% Max.
  • Iron: Balance

Physical Properties

  • Density: Approx. 8000 kg/m³
  • Elastic Modulus: Approx. 193 GPa
  • Thermal Conductivity: Approx. 16.2 W/m·K
  • Specific Heat: Approx. 500 J/kg·K
  • Electrical Resistivity: Approx. 720 nΩ·m
  • Thermal Expansion: Approx. 17.2 × 10⁻⁶ /°C

Testing & Inspection

  • Visual Inspection
  • Dimensional Inspection
  • Chemical Analysis
  • Tensile Testing
  • Yield Strength Testing
  • Hardness Testing
  • Hydrostatic Testing
  • Ultrasonic Testing
  • Radiographic Testing
  • Dye Penetrant Testing
  • PMI Testing
  • Weld Inspection
  • EN 10204 3.1 Certificate

Surface Treatment

  • Pickling
  • Passivation
  • Solution Annealing
  • Bright Annealing
  • Electropolishing
  • Shot Blasting
  • Polishing
  • Sand Blasting
  • Custom Surface Finish

Welded Elbows Dimensions as per ASME B16.9

NPS OD (mm) OD (inch) 90° LR C-F (mm) 90° SR C-F (mm) 45° LR C-F (mm)
1/2" 21.3 0.840 38 — 16
3/4" 26.7 1.050 38 — 19
1" 33.4 1.315 38 25 22
1-1/4" 42.2 1.660 48 32 25
1-1/2" 48.3 1.900 57 38 29
2" 60.3 2.375 76 51 35
2-1/2" 73.0 2.875 95 64 44
3" 88.9 3.500 114 76 51
3-1/2" 101.6 4.000 133 89 57
4" 114.3 4.500 152 102 64
5" 141.3 5.563 190 127 79
6" 168.3 6.625 229 152 95
8" 219.1 8.625 305 203 127
10" 273.1 10.750 381 254 159
12" 323.9 12.750 457 305 191
14" 355.6 14.000 533 356 221
16" 406.4 16.000 610 406 253
18" 457.0 18.000 686 457 286
20" 508.0 20.000 762 508 318
22" 559.0 22.000 838 559 349
24" 610.0 24.000 914 610 381

Large Size Welded Elbow Dimensions

NPS OD (mm) 90° LR C-F (mm) 90° SR C-F (mm) 45° LR C-F (mm)
26" 660 991 660 413
28" 711 1067 711 445
30" 762 1143 762 476
32" 813 1219 813 508
34" 864 1295 864 540
36" 914 1372 914 572
38" 965 1448 965 603
40" 1016 1524 1016 635
42" 1067 1600 — 667
44" 1118 1676 — 699
46" 1168 1753 — 730
48" 1220 1829 — 762

Welded Elbow Schedule & Wall Thickness

Schedule Designation Application
5S Light Wall Low Pressure / Corrosion Resistant Service
10S Light Wall General Process Piping
20S Medium Wall Industrial Piping
STD Standard Wall General Industrial Service
40S Standard Wall Process Piping
XS Extra Strong Higher Pressure Service
80S Heavy Wall High Pressure Service
160 Extra Heavy Wall High Pressure / High Temperature
XXS Double Extra Strong Heavy Duty Piping

Welded Elbow Weight Information

Elbow Type Angle Radius Weight Basis Weight Determination
Welded Elbow 45° Long Radius Material + Size + Schedule Calculated per actual configuration
Welded Elbow 90° Long Radius Material + Size + Schedule Calculated per actual configuration
Welded Elbow 90° Short Radius Material + Size + Schedule Calculated per actual configuration
Welded Elbow Custom Custom Radius Drawing Based Calculated from final dimensions

Actual component weight varies according to nominal pipe size, outside diameter, wall thickness, elbow angle, radius, material density, welding construction and end preparation.


Welded Elbow Angle & Radius

Elbow Type Angle Radius Type Radius Connection
Welded Long Radius Elbow 45° LR 1.5D Butt Weld
Welded Long Radius Elbow 90° LR 1.5D Butt Weld
Welded Short Radius Elbow 90° SR 1D Butt Weld
Welded Return 180° LR 1.5D Butt Weld
Custom Welded Elbow Custom Custom As per drawing Butt Weld

Chemical Composition

Carbon (C)
0.030% Max.
Chromium (Cr)
18.0–20.0%
Nickel (Ni)
8.0–12.0%
Manganese (Mn)
2.00% Max.
Silicon (Si)
0.75% Max.
Phosphorus (P)
0.045% Max.
Sulfur (S)
0.030% Max.
Nitrogen (N)
0.10% Max.
Iron (Fe)
Balance

Physical Properties

Density: Approx. 8000 kg/m³
Elastic Modulus: Approx. 193 GPa
Thermal Conductivity: Approx. 16.2 W/m·K
Specific Heat: Approx. 500 J/kg·K
Electrical Resistivity: Approx. 720 nΩ·m
Thermal Expansion: Approx. 17.2 × 10⁻⁶ /°C

Mechanical Performance

485
MPa (70 ksi)
Tensile Strength
170
MPa (25 ksi)
Yield Strength
35%
Minimum
Elongation
192
HBW Maximum
Brinell Hardness
170
MPa Minimum
0.2% Yield Strength
S30403
UNS
Material Grade


MANUFACTURING

Forging Process

Each flange follows a rigorous 8-step forging and quality-control process to ensure conformance with ASTM A182 and ASME standards.

1

Material Selection

Prime 304 stainless steel billet sourced and certified.

2

Billet Preparation

Heat to 1100°C – 1250°C for optimal forgeability.

3

Forging

Shape billet into flange geometry under controlled pressure.

4

Heat Treatment

Solution anneal at 1040°C – 1120°C, then quench.

5

Machining & Finishing

CNC machining, drilling, and surface finishing.

6

Testing & Inspection

Tensile, hardness, PMI, visual and impact tests performed.