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Stainless Steel Flanges
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ANSI B 16.5 Class 150 lb
We are a fast growing organization, engaged in manufacturing, supply and export of welding neck flanges, industrial weld neck flanges and forged flanges. Our weld neck flanges are drilled with the wall thickness of flange having the same dimensions of pipe. Flanges for heavier pipes have smaller bore, while flanges of lighter pipes have larger bore. These weld neck flanges, industrial weld neck flanges, forged flanges are normally used for high-pressure, cold or hot temperature.
We manufacture standard range of ANSI B 16.5 Class 150 lb–Weld Neck Flanges that can be availed in different diameters, thicknesses and weights as per clients’ requirements.
| Pipe | Flange Data | Hub Data | Raised Face | Drilling Data | Weight |
 |  | A | B | C | D | E | F | G | H | I | J |  |
| Outside Diameter In Mm | Overall Diameter In Mm | Inside Diameter In Mm | Flange Thickness min In Mm | Overall Length In Mm | Diameter at Weld Bevel In Mm | Hub Diameter In Mm | Face Diameter In Mm | Number of Holes | Bolt Hole Diameter In Mm | Diameter of Circle of Holes In Mm | Kg/ Piece |
| ½ | 0.840 | 3.500 | 0.620 | 0.440 | 1.880 | 0.840 | 1.190 | 1.380 | 4 | 0.620 | 2.380 | 0.48 |
| 21.30 | 88.90 | 15.70 | 11.20 | 47.80 | 21.30 | 30.20 | 35.00 | | 15.70 | 60.45 | |
| ¾ | 1.050 | 3.880 | 0.820 | 0.500 | 2.060 | 1.050 | 1.500 | 1.690 | 4 | 0.620 | 2.750 | 0.71 |
| 26.70 | 98.60 | 20.80 | 12.70 | 52.30 | 26.70 | 38.10 | 42.90 | | 15.70 | 69.85 | |
| 1 | 1.315 | 4.250 | 1.050 | 0.560 | 2.190 | 1.320 | 1.940 | 2.000 | 4 | 0.620 | 3.120 | 1.01 |
| 33.40 | 108.0 | 26.70 | 14.20 | 55.60 | 33.50 | 49.30 | 50.80 | | 15.70 | 79.25 | |
| 1 ¼ | 1.660 | 4.620 | 1.380 | 0.620 | 2.250 | 1.660 | 2.310 | 2.500 | 4 | 0.620 | 3.500 | 1.33 |
| 42.20 | 117.3 | 35.10 | 15.70 | 57.15 | 42.20 | 58.70 | 63.50 | | 15.70 | 88.90 | |
| 1 ½ | 1.900 | 5.000 | 1.610 | 0.690 | 2.440 | 1.900 | 2.560 | 2.880 | 4 | 0.620 | 3.880 | 1.72 |
| 48.30 | 127.0 | 40.90 | 17.50 | 62.00 | 48.30 | 65.00 | 73.15 | | 15.70 | 98.60 | |
| 2 | 2.375 | 6.000 | 2.070 | 0.750 | 2.500 | 2.380 | 3.060 | 3.620 | 4 | 0.750 | 4.750 | 2.58 |
| 60.30 | 152.4 | 52.60 | 19.10 | 63.50 | 60.45 | 77.70 | 91.90 | | 19.10 | 120.7 | |
| 2 ½ | 2.875 | 7.000 | 2.470 | 0.880 | 2.750 | 2.880 | 3.560 | 4.120 | 4 | 0.750 | 5.500 | 4.11 |
| 73.00 | 177.8 | 62.70 | 22.40 | 69.85 | 73.15 | 90.40 | 104.6 | | 19.10 | 139.7 | |
| 3 | 3.500 | 7.500 | 3.070 | 0.940 | 2.750 | 3.500 | 4.250 | 5.000 | 4 | 0.750 | 6.000 | 4.92 |
| 88.90 | 190.5 | 78.00 | 23.90 | 69.85 | 88.90 | 108.0 | 127.0 | | 19.10 | 152.4 | |
| 3 ½ | 4.000 | 8.500 | 3.550 | 0.940 | 2.810 | 4.000 | 4.810 | 5.500 | 8 | 0.750 | 7.000 | 6.08 |
| 101.6 | 215.9 | 90.20 | 23.90 | 71.40 | 101.6 | 122.2 | 139.7 | | 19.10 | 177.8 | |
| 4 | 4.500 | 9.000 | 4.030 | 0.940 | 3.000 | 4.500 | 5.310 | 6.190 | 8 | 0.750 | 7.500 | 6.84 |
| 114.3 | 228.6 | 102.4 | 23.90 | 76.20 | 114.3 | 134.9 | 157.2 | | 19.10 | 190.5 | |
| 5 | 5.563 | 10.00 | 5.050 | 0.940 | 3.500 | 5.560 | 6.440 | 7.310 | 8 | 0.880 | 8.500 | 8.56 |
| 141.3 | 254.0 | 128.3 | 23.90 | 88.90 | 141.2 | 163.6 | 185.7 | | 22.40 | 215.9 | |
| 6 | 6.625 | 11.00 | 6.070 | 1.000 | 3.500 | 6.630 | 7.560 | 8.500 | 8 | 0.880 | 9.500 | 10.6 |
| 168.3 | 279.4 | 154.2 | 25.40 | 88.90 | 168.4 | 192.0 | 215.9 | | 22.40 | 241.3 | |
| 8 | 8.625 | 13.50 | 7.980 | 1.120 | 4.000 | 8.630 | 9.690 | 10.62 | 8 | 0.880 | 11.75 | 17.6 |
| 219.1 | 342.9 | 202.7 | 28.40 | 101.6 | 219.2 | 246.1 | 269.7 | | 22.40 | 298.5 | |
| 10 | 10.75 | 16.00 | 10.02 | 1.190 | 4.000 | 10.75 | 12.00 | 12.75 | 12 | 1.000 | 14.25 | 24.0 |
| 273.0 | 406.4 | 254.5 | 30.20 | 101.6 | 273.0 | 304.8 | 323.8 | | 25.40 | 362.0 | |
| 12 | 12.75 | 19.00 | 12.00 | 1.250 | 4.500 | 12.75 | 14.38 | 15.00 | 12 | 1.000 | 17.00 | 36.5 |
| 323.8 | 482.6 | 304.8 | 31.75 | 114.3 | 323.8 | 365.3 | 381.0 | | 25.40 | 431.8 | |
| 14 | 14.00 | 21.00 |  | 1.380 | 5.000 | 14.00 | 15.75 | 16.25 | 12 | 1.120 | 18.75 | 48.4 |
| 355.6 | 533.4 | 35.10 | 127.0 | 355.6 | 400.1 | 412.7 | | 28.40 | 476.3 | |
| 16 | 16.00 | 23.50 | 1.440 | 5.000 | 16.00 | 18.00 | 18.50 | 16 | 1.120 | 21.25 | 60.6 |
| 406.4 | 596.9 | 36.60 | 127.0 | 406.4 | 475.2 | 469.9 | | 28.40 | 539.8 | |
| 18 | 18.00 | 25.00 | 1.560 | 5.500 | 18.00 | 19.88 | 21.00 | 16 | 1.250 | 22.75 | 68.3 |
| 457.2 | 635.0 | 39.60 | 139.7 | 457.2 | 505.0 | 533.4 | | 31.75 | 577.9 | |
| 20 | 20.00 | 27.50 | 1.690 | 5.690 | 20.00 | 22.00 | 23.00 | 20 | 1.250 | 25.00 | 84.5 |
| 508.0 | 698.5 | 42.90 | 144.5 | 508.0 | 558.8 | 584.2 | | 31.75 | 635.0 | |
| 24 | 24.00 | 32.00 | 1.880 | 6.000 | 24.00 | 26.12 | 27.25 | 20 | 1.380 | 29.50 | 115 |
| 609.6 | 812.8 | 47.80 | 152.4 | 609.6 | 663.4 | 692.1 | | 35.10 | 749.3 | |
Notes - Dimensions B corresponds to the pipe inside diameter. Values quoted assume 40S/Standard wall thickness
- Weights are based on manufacturer's data and are approximate.
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Weld Neck Flanges
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