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ASTM A234 WPB Pipe Fittings

ASTM A234 Pipe Fittings

ASTM A234 WP Grades

ASTM A234 WPB Pipe Fittings

ASTM A234 WPB Pipe Fittings Specifications

Material Grades

  • ASTM A234 WPB
  • ASME SA234 WPB
  • Carbon Steel
  • Suitable for A106 Grade B Pipe
  • Seamless & Welded Construction

Manufacturing Method

  • Seamless Pipe Fittings
  • Welded Pipe Fittings
  • Hot Formed Fittings
  • Cold Formed Fittings
  • Buttweld Fittings
  • Custom Manufacturing

Fittings Types

  • 90° Elbow
  • 45° Elbow
  • 180° Return Elbow
  • Equal Tee
  • Reducing Tee
  • Reducer
  • Cross
  • Cap
  • Stub End
  • Wye

Fittings Testing

  • Dimensional Inspection
  • Visual Inspection
  • Hardness Testing
  • Tensile Testing
  • Yield Strength Testing
  • Hydrostatic Testing
  • Radiographic Testing
  • Ultrasonic Testing

Manufacturing Standards

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

Fittings Sizes

  • Size: 1/2" – 48"
  • Thickness: Schedule 5S – S160
  • Thickness: XXS
  • Pressure Rating: 150# – 2500#
  • Connection: Butt Weld
  • Custom Sizes Available

ASTM A234 WPB Pipe Fittings Dimensions Chart

NPS O.D. (mm) O.D. (inch) 90° Elbow 45° Elbow
Center to Face (in.) 		180° Return Elbow
Long Radius Short Radius Center to Center Back to Face
1/2" 21.3 0.840 1 1/2 – 5/8 2 1 7/8
3/4" 26.7 1.050 1 1/8 – 7/16 2 1/4 1 11/16
1" 33.4 1.315 1 1/2 1 7/8 3 2 3/16
1 1/4" 42.2 1.660 1 7/8 1 1/4 1 3 3/4 2 3/4
1 1/2" 48.3 1.900 2 1/4 1 1/2 1 1/8 4 1/2 3 1/4
2" 60.3 2.375 3 2 1 3/8 6 4 3/16
2 1/2" 73.0 2.875 3 3/4 2 1/2 1 3/4 7 1/2 5 3/16
3" 88.9 3.500 4 1/2 3 2 9 6 1/4
3 1/2" 101.6 4.000 5 1/4 3 1/2 2 1/4 10 1/2 7 1/4
4" 114.3 4.500 6 4 2 1/2 12 8 1/4
5" 141.3 5.563 7 1/2 5 3 1/8 15 10 5/16
6" 168.3 6.625 9 6 3 3/4 18 12 5/16
8" 219.1 8.625 12 8 5 24 16 5/16
10" 273.1 10.750 15 10 6 1/4 30 20 3/8
12" 323.9 12.750 18 12 7 1/2 36 24 3/8

ASTM A234 WPB Tee, Cross, Cap & Stub End Dimensions

NPS O.D. (mm) End Cap (in.) Straight Tee Length (in.) Straight Cross Center to End (in.) Stub End Lap Diameter (in.) Long Stub End Length (in.) Short Stub End Length (in.)
1/2" 21.3 1 1 – 1 3/8 3 2
3/4" 26.7 1 1 1/8 – 1 11/16 3 2
1" 33.4 1 1/2 1 1/2 1 1/2 2 4 2
1 1/4" 42.2 1 1/2 1 7/8 1 7/8 2 1/2 4 2
1 1/2" 48.3 1 1/2 2 1/4 2 1/4 2 7/8 4 2
2" 60.3 1 1/2 2 1/2 2 1/2 3 5/8 6 2 1/2
2 1/2" 73.0 1 1/2 3 3 4 1/8 6 2 1/2
3" 88.9 2 3 3/8 3 3/8 5 6 2 1/2
4" 114.3 2 1/2 4 1/8 4 1/8 6 3/16 6 3
6" 168.3 3 1/2 5 5/8 5 5/8 8 1/2 8 3 1/2
8" 219.1 4 7 7 10 5/8 8 4
10" 273.1 5 8 1/2 8 1/2 12 3/4 10 5
12" 323.9 6 10 10 15 10 6

ASTM A234 WPB Pipe Fittings Weight Chart

DN Schedule 10S Schedule 40S Schedule 80S
90° Elbow (kg) 45° Elbow (kg) Equal Tee (kg) 90° Elbow (kg) 45° Elbow (kg) Equal Tee (kg) 90° Elbow (kg) 45° Elbow (kg) Equal Tee (kg)
8 0.02 0.01 0.03 0.03 0.02 0.06 0.04 0.03 0.07
10 0.03 0.02 0.05 0.03 0.02 0.03 0.06 0.04 0.09
15 0.06 0.03 0.09 0.08 0.04 0.10 0.10 0.05 0.14
20 0.07 0.03 0.13 0.08 0.04 0.17 0.11 0.05 0.20
25 0.14 0.08 0.28 0.15 0.11 0.29 0.22 0.14 0.38
32 0.23 0.11 0.49 0.26 0.17 0.59 0.40 0.23 0.68
40 0.30 0.17 0.68 0.40 0.23 0.86 0.51 0.29 1.02
50 0.50 0.25 0.85 0.70 0.40 1.28 0.91 0.59 1.59
65 0.85 0.48 1.41 1.40 0.77 2.19 1.81 0.99 3.13
80 1.25 0.63 1.77 2.20 1.08 3.31 2.97 1.50 4.45
90 1.70 0.75 2.67 2.83 1.42 4.08 4.00 2.00 5.44
100 2.10 1.08 3.46 4.47 2.09 5.27 6.18 2.81 7.71
150 5.45 2.72 8.07 10.89 5.44 10.99 16.32 8.16 13.61
200 10.20 5.33 15.65 21.54 10.77 20.91 33.11 16.56 28.12
250 18.15 9.75 26.46 38.56 19.27 35.38 51.71 25.86 49.90
300 25.80 13.62 39.46 59.42 29.71 62.14 79.38 39.69 83.91

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
Flange Equivalent: ASTM A105
Valve Equivalent: ASTM A216 Grade WCB
Bolt Equivalent: ASTM A193 Grade B7
Nut Equivalent: ASTM A194 Grade 2H

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.