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ASTM A234 WP11 Pipe Fittings

ASTM A234 Pipe Fittings

ASTM A234 WP Grades

ASTM A234 WPB Pipe Fittings

ASTM A234 WP11 Pipe Fittings Specifications

Material Grades

  • ASTM A234 WP11
  • ASME SA234 WP11
  • Alloy Steel WP11
  • Chrome Moly Steel

Fitting Types

  • Elbow
  • Tee
  • Reducer
  • End Cap
  • Stub End
  • Bend
  • Wye
  • Cross
  • Adapter

Manufacturing Method

  • Seamless
  • Butt Weld
  • Welded
  • Hot Formed
  • Cold Formed

Testing

  • Visual Inspection
  • Dimensional Inspection
  • Material Testing
  • NDT Testing
  • Hydrostatic Testing

Manufacturing Standards

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

Sizes & Pressure

  • Size: NPS 1/2" to 48"
  • Schedule: 5 to XXS
  • Pressure Class: 150 LBS to 2500 LBS
  • Metric: NPT, ISO, JIS, DIN, EN

ASTM A234 WP11 Pipe Fittings Dimensions Chart

NPS O.D. (mm) O.D. (Inch) 90° LR Elbow 90° SR Elbow 45° Elbow 180° LR Radius 180° LR Center to Center 180° LR 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 3 4 1/2 3 1/4
2 60.3 2.375 3 2 1 3/8 4 6 4 3/16
2 1/2 73.0 2.875 3 3/4 2 1/2 1 3/4 5 7 1/2 5 3/16
3 88.9 3.500 4 1/2 3 2 6 9 6 1/4
3 1/2 101.6 4.000 5 1/4 3 1/2 2 1/4 7 10 1/2 7 1/4
4 114.3 4.500 6 4 2 1/2 8 12 8 1/4
5 141.3 5.563 7 1/2 5 3 1/8 10 15 10 5/16
6 168.3 6.625 9 6 3 3/4 12 18 12 5/16
8 219.1 8.625 12 8 5 12 24 16 5/16
10 273.1 10.750 15 10 6 1/4 15 30 20 3/8
12 323.9 12.750 18 12 7 1/2 18 36 24 3/8

ASTM A234 WP11 Pipe Cap, Tee, Cross & Stub End Dimensions

NPS O.D. (mm) Pipe End Cap (Inch) Straight Tee Length (Inch) Straight Cross Center to End (Inch) Stub End Lap Diameter (Inch) Long Stub End (Inch) Short Stub End (Inch)
1/2 21.3 0.840 1 1 – 1 3/8 3
3/4 26.7 1.050 1 1/8 – 1 11/16 3 2
1 33.4 1.315 1 1/2 1 1/2 2 4 2
1 1/4 42.2 1.660 1 7/8 1 7/8 2 1/2 4 2
1 1/2 48.3 1.900 2 1/4 2 1/4 2 7/8 4 2
2 60.3 2.375 2 1/2 2 1/2 3 5/8 6 2 1/2
2 1/2 73.0 2.875 3 3 4 1/8 6 2 1/2
3 88.9 3.500 3 3/8 3 3/8 5 6 2 1/2
3 1/2 101.6 4.000 3 3/4 3 3/4 5 1/2 6 3
4 114.3 4.500 4 1/8 4 1/8 6 3/16 6 3
5 141.3 5.563 4 7/8 4 7/8 7 5/16 8 3
6 168.3 6.625 5 5/8 5 5/8 8 1/2 8 3 1/2
8 219.1 8.625 7 7 10 5/8 8 4
10 273.1 10.750 8 1/2 8 1/2 12 3/4 10 5
12 323.9 12.750 10 10 15 10 6

ASTM A234 WP11 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 0.020.010.03 0.030.020.06 0.040.030.07
10 0.030.020.05 0.030.020.03 0.060.040.09
15 0.060.030.09 0.080.040.10 0.100.050.14
20 0.070.030.13 0.080.040.17 0.110.050.20
25 0.140.080.28 0.150.110.29 0.220.140.38
32 0.230.110.49 0.260.170.59 0.400.230.68
40 0.300.170.68 0.400.230.86 0.510.291.02
50 0.500.250.85 0.700.401.28 0.910.591.59
65 0.850.481.41 1.400.772.19 1.810.993.13
80 1.250.631.77 2.201.083.31 2.971.504.45
90 1.700.752.67 2.831.424.08 4.002.005.44
100 2.101.083.46 4.472.095.27 6.182.817.71
150 5.452.728.07 10.895.4410.99 16.328.1613.61
200 10.205.3315.65 21.5410.7720.91 33.1116.5628.12
250 18.159.7526.46 38.5619.2735.38 51.7125.8649.90
300 25.8013.6239.46 59.4229.7162.14 79.3839.6983.91

ASTM A234 WP11 Reducer & Reducing Tee Weight Chart

Size Schedule 10S Schedule 40S Schedule 80S
Concentric Reducer Eccentric Reducer Reducing Tee Concentric Reducer Eccentric Reducer Reducing Tee Concentric Reducer Eccentric Reducer Reducing Tee
40 × 25 0.190.190.60 0.260.260.76 0.340.340.90
50 × 25 0.280.280.73 0.400.401.10 0.540.541.37
50 × 40 0.310.310.76 0.450.451.15 0.590.591.43
80 × 50 0.550.551.56 1.001.002.91 1.791.793.91
100 × 50 0.780.782.94 1.501.504.48 1.951.956.55
100 × 80 0.870.873.04 1.741.744.64 2.332.336.79
150 × 80 1.821.826.86 3.953.959.68 5.515.5111.57
150 × 100 1.961.967.10 4.074.0711.94 5.965.9611.97
200 × 100 3.013.0113.46 6.556.5517.98 9.239.2324.18
200 × 150 3.193.1914.08 6.746.7418.82 10.1210.1225.31

Chemical Composition

Carbon (C)
0.05–0.20%
Manganese (Mn)
0.30–0.80%
Phosphorus (P)
0.04% Max
Sulfur (S)
0.04% Max
Silicon (Si)
0.50–1.00%
Chromium (Cr)
1.00–1.50%
Molybdenum (Mo)
0.44–0.65%

Equivalent Grade

ASTM / ASME ASTM A234 WP11 / ASME SA234 WP11
Pipe Equivalent ASTM A335 P11
Forging / Flange Equivalent ASTM A182 F11
Valve Equivalent ASTM A217 WC6
European Equivalent X11CrMo5

Mechanical Performance

415–585
MPa
Class 1 Tensile Strength
205
MPa Min
Class 1 Yield Strength
520–690
MPa
Class 3 Tensile Strength
310
MPa Min
Class 3 Yield Strength
150–2500
LBS
Pressure Class
550
°F / 288°C
Maximum Listed Temperature


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.