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ASTM A234 WPB Elbow

ASTM A234 Pipe Fittings

ASTM A234 WP Grades

ASTM A234 WPB Pipe Fittings

ASTM A234 WPB Elbow Specifications

Material Grades

  • ASTM A234 WPB
  • ASME SA234 WPB
  • Carbon Steel
  • Wrought Carbon Steel
  • Low Temperature Carbon Steel

Elbow Types

  • 45 Degree Elbow
  • 90 Degree Elbow
  • 180 Degree Elbow
  • Long Radius Elbow
  • Short Radius Elbow
  • 3D Elbow
  • 5D Elbow
  • Street Elbow
  • Reducing Elbow

Manufacturing Method

  • Seamless Construction
  • Butt Weld Construction
  • Hot Forming
  • Cold Forming
  • Mandrel Forming
  • Custom Manufacturing

Elbow Testing

  • Dimensional Inspection
  • Visual Inspection
  • Hardness Testing
  • Tensile Testing
  • Hydrostatic Testing
  • Radiographic Testing
  • Ultrasonic Testing
  • PMI Testing

Manufacturing Standards

  • ASME B16.9
  • ASME B16.28
  • MSS-SP-43 Type A
  • MSS-SP-43 Type B
  • JIS B2312
  • JIS B2313

Elbow Sizes

  • Size: 1/2" – 48"
  • Schedule: 5 – XXS
  • Pressure Rating: 150 – 2500 LBS
  • Radius: LR / SR / 3D / 5D
  • End Connection: Butt Weld
  • Custom Sizes Available

ASTM A234 WPB Elbow Dimensions Chart

NPS Outside Diameter (mm) 90° LR Center-to-End A (mm) 45° LR Center-to-End B (mm) 90° 3D Center-to-End A (mm) 45° 3D Center-to-End B (mm)
1/2" 21.3 38 16 - -
3/4" 26.7 38 19 57 24
1" 33.4 38 22 76 31
1 1/4" 42.2 48 25 95 39
1 1/2" 48.3 57 29 114 47
2" 60.3 76 35 152 63
2 1/2" 73.0 95 44 190 79
3" 88.9 114 51 229 95
3 1/2" 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" 273.0 381 159 762 316
12" 323.8 457 190 914 378
14" 355.6 533 222 1067 441
16" 406.4 610 254 1219 505
18" 457.0 686 286 1372 568
20" 508.0 762 318 1524 632
22" 559.0 838 343 1676 694
24" 610.0 914 381 1829 757
26" 660.0 991 406 1981 821
28" 711.0 1067 438 2134 883
30" 762.0 1143 470 2286 964
32" 813.0 1219 502 2438 1010
34" 864.0 1295 533 2591 1073
36" 914.0 1372 565 2743 1135
38" 965.0 1448 600 2896 1200
40" 1016.0 1524 632 3048 1264
42" 1067.0 1600 660 3200 1326
44" 1118.0 1676 695 3353 1389
46" 1168.0 1753 727 3505 1453
48" 1219.0 1829 759 3658 1516

ASTM A234 WPB 90 Degree Elbow Dimensions

NPS DN Outside Diameter (mm) Center-to-Center (A) mm Radius (B) mm Center-to-End (C) mm Back-to-Face (K) mm
1/2" 15 21.34 76.20 38.10 15.87 47.62
3/4" 20 26.67 57.15 28.57 11.11 42.86
1" 25 33.40 76.20 38.10 22.22 55.56
1 1/4" 32 42.16 95.25 47.60 25.40 69.85
1 1/2" 40 48.26 114.30 57.15 28.57 82.55
2" 50 60.32 152.40 76.20 34.92 106.40
2 1/2" 65 73.02 190.50 95.25 44.45 131.80
3" 80 88.90 228.60 114.30 50.80 158.75
4" 100 114.30 304.80 152.40 63.50 209.55
6" 150 168.27 457.20 228.60 95.25 312.70
8" 200 219.07 609.60 304.80 127.00 414.30
10" 250 273.05 762.00 381.00 158.75 517.50
12" 300 323.85 914.40 457.20 190.50 619.10
14" 350 355.60 1066.80 533.40 222.25 711.20
16" 400 406.40 1219.20 609.60 254.00 812.80
18" 450 457.20 1371.60 685.80 285.74 914.40
20" 500 508.00 1524.00 762.00 317.50 1016.00
22" 550 558.80 1676.40 838.20 342.90 1117.60
24" 600 609.60 1828.80 914.40 381.00 1219.20

ASTM A234 WPB 180 Degree Elbow Dimensions

NPS Outside Diameter (mm) 180° LR Center-to-Center (mm) 180° LR Back-to-Face (mm) 180° SR Center-to-Center (mm) 180° SR Back-to-Face (mm)
1/2" 21.3 76 48 – –
3/4" 26.7 76 51 – –
1" 33.4 76 56 51 41
1 1/4" 42.2 95 70 64 52
1 1/2" 48.3 114 83 76 62
2" 60.3 152 106 102 81
2 1/2" 73.0 190 132 127 100
3" 88.9 229 159 152 121
4" 114.3 305 210 203 159
6" 168.3 457 313 305 237
8" 219.1 610 414 406 313
10" 273.0 762 518 508 391
12" 323.8 914 619 610 467
14" 355.6 1067 711 711 533
16" 406.4 1219 813 813 610
18" 457.0 1372 914 914 686
20" 508.0 1524 1016 1016 762
22" 559.0 1676 1118 1118 838
24" 610.0 1829 1219 1219 914

ASTM A234 WPB Elbow Weight Chart

NPS Weight (LBS) Weight (KG)
1/2"0.090.04
3/4"0.090.04
1"0.250.11
1 1/4"0.380.17
1 1/2"0.400.18
2"0.810.37
2 1/2"1.750.79
3"2.631.19
3 1/2"3.501.59
4"4.502.04
5"7.503.40
6"12.005.44
8"23.0010.43
10"43.0019.50
12"62.0028.12
14"80.0036.29
16"100.0045.36
18"126.0057.15
20"160.0072.57
22"197.0089.36
24"238.00107.95
26"275.00124.74
30"367.00166.47
36"531.00240.86

Chemical Composition

Carbon (C)
0.30% max
Manganese (Mn)
0.29–1.06%
Phosphorus (P)
0.05% max
Sulfur (S)
0.058% max
Silicon (Si)
0.10% min
Chromium (Cr)
0.40% max
Molybdenum (Mo)
0.15% max
Nickel (Ni)
0.40% max
Copper (Cu)
0.40% max
Vanadium (V)
0.08% max
Niobium (Nb)
0.02% max
ASTM / ASME: ASTM A234 WPB / ASME SA234 WPB
Pipe Equivalent: ASTM A106 Grade B
Forged Steel Equivalent: ASTM A105
Valve Equivalent: ASTM A216 Grade WCB
European Equivalent: EN 10216-2 P265GH
JIS Equivalent: JIS G3454 STPG 410

Mechanical Performance

415
MPa (60 KSI) minimum
Tensile Strength
240
MPa (35 KSI) minimum
Yield Strength
415–655
MPa
Tensile Strength Range
197
HB maximum
Hardness


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.