Blind flanges are an essential part of a pipework system which helps to seal off the end of pipes or valves and their key properties make a significant contribution to obtaining safe and reliable system operation. Appreciating the mechanical, weight, dimension, size, and physical parameters of blind flanges is an attractive prerequisite as it takes into account several of the important project aspects. Our website presents the actual data on these properties, such as the chemical composition, tensile strength, yield strength, machinability, corrosion resistance, wear resistance, modulus of elasticity, specific gravity, dimensional accuracy, size, and temperature resistance. By studying this chart and table thoroughly, learn about how these properties can improve the pipe shed's ability to flow smoothly, can resist pressure, tolerate load, choose the best materials such as plastics that are lightweight and corrosion-resistant, can adjust to erosion and changes. With the help of our chart and table, not only do you form right judgements, but now you are able to proceed with your project with well thought out decisions.
| Nominal Pipe Size | OD of Flange (D) | Thickness of Flange (B) | Dia of Raised Face (G) | No of Bolt Holes | Dia of Bolt Holes (L) | Dia of Bolt (inches) | Dia of Bolt Circle (K) | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 88.9 | 11.2 | 35.1 | 4 | 15.7 | 1/2 | 60.5 | 0.5 |
| 3/4 | 98.6 | 12.7 | 42.9 | 4 | 15.7 | 1/2 | 69.9 | 1 |
| 1 | 108 | 14.2 | 50.8 | 4 | 15.7 | 1/2 | 79.2 | 1 |
| 1-1/4 | 117.3 | 15.7 | 63.5 | 4 | 15.7 | 1/2 | 88.9 | 1 |
| 1-1/2 | 127 | 17.5 | 73.2 | 4 | 15.7 | 1/2 | 98.6 | 2 |
| 2 | 152.4 | 19.1 | 91.9 | 4 | 19.1 | 5/8 | 120.7 | 2 |
| 2-1/2 | 177.8 | 22.4 | 104.6 | 4 | 19.1 | 5/8 | 139.7 | 3 |
| 3 | 190.5 | 23.9 | 127 | 4 | 19.1 | 5/8 | 152.4 | 4 |
| 3-1/2 | 215.9 | 23.9 | 139.7 | 8 | 19.1 | 5/8 | 177.8 | 6 |
| 4 | 228.6 | 23.9 | 157.2 | 8 | 19.1 | 5/8 | 190.5 | 8 |
| 5 | 254 | 23.9 | 185.7 | 8 | 22.4 | 3/4 | 215.9 | 9 |
| 6 | 279.4 | 25.4 | 215.9 | 8 | 22.4 | 3/4 | 241.3 | 12 |
| 8 | 342.9 | 28.4 | 269.7 | 8 | 22.4 | 3/4 | 298.5 | 20 |
| 10 | 406.4 | 30.2 | 323.9 | 12 | 25.4 | 7/8 | 362 | 32 |
| 12 | 482.6 | 31.8 | 381 | 12 | 25.4 | 7/8 | 431.8 | 50 |
| 14 | 533.4 | 35.1 | 412.8 | 12 | 28.4 | 1 | 476.3 | 64 |
| 16 | 596.9 | 36.6 | 469.9 | 16 | 28.4 | 1 | 539.8 | 82 |
| 18 | 635 | 39.6 | 533.4 | 16 | 31.8 | 1-1/8 | 577.9 | 100 |
| 20 | 698.5 | 42.9 | 584.2 | 20 | 31.8 | 1-1/8 | 635 | 129 |
| 24 | 812.8 | 47.8 | 692.2 | 20 | 35.1 | 1-1/4 | 749.3 | 195 |
| Nominal Pipe Size | OD of Flange (D) | Thickness of Flange (B) | Dia of Raised Face (G) | No of Bolt Holes | Dia of Bolt Holes (L) | Dia of Bolt (inches) | Dia of Bolt Circle (K) | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 35.1 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 42.9 | 4 | 19.1 | 1/2 | 82.6 | 1 |
| 1 | 124 | 17.5 | 50.8 | 4 | 19.1 | 1/2 | 88.9 | 1 |
| 1-1/4 | 133.4 | 19.1 | 63.5 | 4 | 19.1 | 1/2 | 98.6 | 2 |
| 1-1/2 | 155.4 | 20.6 | 73.2 | 4 | 22.4 | 1/2 | 114.3 | 3 |
| 2 | 165.1 | 22.4 | 91.9 | 8 | 19.1 | 5/8 | 127 | 4 |
| 2-1/2 | 190.5 | 25.4 | 104.6 | 8 | 22.4 | 5/8 | 149.4 | 5 |
| 3 | 209.6 | 28.4 | 127 | 8 | 22.4 | 5/8 | 168.1 | 7 |
| 3-1/2 | 228.6 | 30.2 | 139.7 | 8 | 22.4 | 5/8 | 184.2 | 10 |
| 4 | 254 | 31.8 | 157.2 | 8 | 22.4 | 5/8 | 200.2 | 12 |
| 5 | 279.4 | 35.1 | 185.7 | 8 | 22.4 | 5/8 | 235 | 16 |
| 6 | 317.5 | 36.6 | 215.9 | 12 | 22.4 | 3/4 | 269.7 | 23 |
| 8 | 381 | 41.1 | 269.7 | 12 | 25.4 | 3/4 | 330.2 | 37 |
| 10 | 444.5 | 47.8 | 323.9 | 16 | 28.4 | 1 | 387.4 | 56 |
| 12 | 520.7 | 50.8 | 381 | 16 | 31.8 | 1-1/8 | 450.9 | 84 |
| 14 | 584.2 | 53.8 | 412.8 | 20 | 31.8 | 1-1/8 | 514.4 | 113 |
| 16 | 647.7 | 57.2 | 469.9 | 20 | 35.1 | 1-1/4 | 571.5 | 134 |
| 18 | 711.2 | 60.5 | 533.4 | 24 | 35.1 | 1-1/4 | 628.7 | 179 |
| 20 | 774.7 | 63.5 | 584.2 | 24 | 35.1 | 1-1/4 | 685.8 | 229 |
| 24 | 914.4 | 69.9 | 692.2 | 24 | 41.1 | 1-1/2 | 812.8 | 358 |
| Nominal Pipe Size | OD of Flange (D) | Thickness of Flange (B) | Dia of Raised Face (G) | No of Bolt Holes | Dia of Bolt Holes (L) | Dia of Bolt (inches) | Dia of Bolt Circle (K) | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 95.3 | 14.2 | 35.1 | 4 | 15.7 | 1/2 | 66.5 | 1 |
| 3/4 | 117.3 | 15.7 | 42.9 | 4 | 19.1 | 5/8 | 82.6 | 1 |
| 1 | 124 | 17.5 | 50.8 | 4 | 19.1 | 5/8 | 88.9 | 2 |
| 1-1/4 | 133.4 | 20.6 | 63.5 | 4 | 19.1 | 5/8 | 98.6 | 2 |
| 1-1/2 | 155.4 | 22.4 | 73.2 | 4 | 22.4 | 3/4 | 114.3 | 4 |
| 2 | 165.1 | 25.4 | 91.9 | 8 | 19.1 | 5/8 | 127 | 5 |
| 2-1/2 | 190.5 | 28.4 | 104.6 | 8 | 22.4 | 3/4 | 149.4 | 7 |
| 3 | 209.6 | 31.8 | 127 | 8 | 22.4 | 3/4 | 168.1 | 9 |
| 3-1/2 | 228.6 | 35.1 | 139.7 | 8 | 25.4 | 7/8 | 184.2 | 13 |
| 4 | 273.1 | 38.1 | 157.2 | 8 | 25.4 | 7/8 | 215.9 | 19 |
| 5 | 330.2 | 44.5 | 185.7 | 8 | 28.4 | 1 | 266.7 | 31 |
| 6 | 355.6 | 47.8 | 215.9 | 12 | 28.4 | 1 | 292.1 | 39 |
| 8 | 419.1 | 55.6 | 269.7 | 12 | 31.8 | 1-1/8 | 349.3 | 64 |
| 10 | 508 | 63.5 | 323.9 | 16 | 35.1 | 1-1/4 | 431.8 | 104 |
| 12 | 558.8 | 66.5 | 381 | 20 | 35.1 | 1-1/4 | 489 | 134 |
| 14 | 603.3 | 69.9 | 412.8 | 20 | 38.1 | 1-3/8 | 527.1 | 161 |
| 16 | 685.8 | 76.2 | 469.9 | 20 | 41.1 | 1-1/2 | 603.3 | 225 |
| 18 | 743 | 82.6 | 533.4 | 20 | 44.5 | 1-5/8 | 654.1 | 286 |
| 20 | 812.8 | 88.9 | 584.2 | 24 | 44.5 | 1-5/8 | 723.9 | 367 |
| 24 | 939.8 | 101.6 | 692.2 | 24 | 50.8 | 1-7/8 | 838.2 | 567 |
| Nominal Pipe Size | OD of Flange (D) | Thickness of Flange (B) | Dia of Raised Face (G) | No of Bolt Holes | Dia of Bolt Holes (L) | Dia of Bolt (inches) | Dia of Bolt Circle (K) | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 120.7 | 22.4 | 35.1 | 4 | 22.4 | 3/4 | 82.6 | 2 |
| 3/4 | 130 | 25.4 | 42.9 | 4 | 22.4 | 3/4 | 88.9 | 3 |
| 1 | 149.4 | 28.4 | 50.8 | 4 | 25.4 | 7/8 | 101.6 | 4 |
| 1-1/4 | 158.8 | 28.4 | 63.5 | 4 | 25.4 | 1 | 111.3 | 4 |
| 1-1/2 | 177.8 | 31.8 | 73.2 | 4 | 28.4 | 1-1/8 | 124 | 6 |
| 2 | 215.9 | 38.1 | 91.9 | 8 | 25.4 | 1 | 165.1 | 11 |
| 2-1/2 | 244.3 | 41.1 | 104.6 | 8 | 28.4 | 1-1/8 | 190.5 | 16 |
| 3 | 241.3 | 38.1 | 127 | 8 | 25.4 | 7/8 | 190.5 | 13 |
| 4 | 292.1 | 44.5 | 157.2 | 8 | 31.8 | 1-1/8 | 235 | 24 |
| 5 | 349.3 | 50.8 | 185.7 | 8 | 35.1 | 1-1/4 | 279.4 | 39 |
| 6 | 381 | 55.6 | 215.9 | 12 | 31.8 | 1-1/8 | 317.5 | 52 |
| 8 | 469.9 | 63.5 | 269.7 | 12 | 38.1 | 1-3/8 | 393.7 | 91 |
| 10 | 546.1 | 69.9 | 323.9 | 16 | 38.1 | 1-3/8 | 469.9 | 132 |
| 12 | 609.6 | 79.2 | 381 | 20 | 38.1 | 1-3/8 | 533.4 | 188 |
| 14 | 641.4 | 85.9 | 412.8 | 20 | 41.1 | 1-1/2 | 558.8 | 236 |
| 16 | 704.9 | 88.9 | 469.9 | 20 | 44.5 | 1-5/8 | 616 | 272 |
| 18 | 787.4 | 101.6 | 533.4 | 20 | 50.8 | 1-7/8 | 685.8 | 386 |
| 20 | 857.3 | 108 | 584.2 | 20 | 53.8 | 2 | 749.3 | 488 |
| 24 | 1041.4 | 139.7 | 692.2 | 20 | 66.5 | 2-1/2 | 901.7 | 919 |
| Nominal Pipe Size | OD of Flange (D) | Thickness of Flange (B) | Dia of Raised Face (G) | No of Bolt Holes | Dia of Bolt Holes (L) | Dia of Bolt (inches) | Dia of Bolt Circle (K) | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 120.7 | 22.4 | 35.1 | 4 | 22.4 | 3/4 | 82.6 | 2 |
| 3/4 | 130 | 25.4 | 42.9 | 4 | 22.4 | 3/4 | 88.9 | 3 |
| 1 | 149.4 | 28.4 | 50.8 | 4 | 25.4 | 7/8 | 101.6 | 4 |
| 1-1/4 | 158.8 | 28.4 | 63.5 | 4 | 25.4 | 1 | 111.3 | 4 |
| 1-1/2 | 177.8 | 31.8 | 73.2 | 4 | 28.4 | 1-1/8 | 124 | 6 |
| 2 | 215.9 | 38.1 | 91.9 | 8 | 25.4 | 1 | 165.1 | 11 |
| 2-1/2 | 244.3 | 41.1 | 104.6 | 8 | 28.4 | 1-1/8 | 190.5 | 16 |
| 3 | 266.7 | 47.8 | 127 | 8 | 31.8 | 1-1/4 | 203.2 | 22 |
| 4 | 311.2 | 53.8 | 157.2 | 8 | 35.1 | 1-1/2 | 241.3 | 33 |
| 5 | 374.7 | 73.2 | 185.7 | 8 | 41.1 | 1-3/4 | 292.1 | 64 |
| 6 | 393.7 | 82.6 | 215.9 | 12 | 38.1 | 2 | 317.5 | 73 |
| 8 | 482.6 | 91.9 | 269.7 | 12 | 44.5 | 2 | 393.7 | 136 |
| 10 | 584.2 | 108 | 323.9 | 12 | 50.8 | 2-1/2 | 482.6 | 231 |
| 12 | 673.1 | 124 | 381 | 16 | 53.8 | 2-3/4 | 571.5 | 313 |
| 14 | 749.3 | 133.4 | 412.8 | 16 | 60.5 | 2-1/4 | 635 | 442 |
| 16 | 825.5 | 146.1 | 469.9 | 16 | 66.5 | 2-1/2 | 704.9 | 590 |
| 18 | 914.4 | 162.1 | 533.4 | 16 | 73.2 | 2-3/4 | 774.7 | 794 |
| 20 | 984.3 | 177.8 | 584.2 | 16 | 79.2 | 3 | 831.9 | 1009 |
| 24 | 1168.4 | 203.2 | 692.2 | 16 | 91.9 | 3-1/2 | 990.6 | 1644 |
| Nominal Pipe Size | OD of Flange (D) | Thickness of Flange (B) | Dia of Raised Face (G) | No of Bolt Holes | Dia of Bolt Holes (L) | Dia of Bolt (inches) | Dia of Bolt Circle (K) | Approx Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 133.4 | 30.2 | 35.1 | 4 | 22.4 | 3/4 | 88.9 | 3 |
| 3/4 | 139.7 | 31.8 | 42.9 | 4 | 22.4 | 3/4 | 95.3 | 4 |
| 1 | 158.8 | 35.1 | 50.8 | 4 | 25.4 | 7/8 | 108 | 5 |
| 1-1/4 | 184.2 | 38.1 | 63.5 | 4 | 28.4 | 1 | 130 | 8 |
| 1-1/2 | 203.2 | 44.5 | 73.2 | 4 | 31.8 | 1-1/8 | 146.1 | 10 |
| 2 | 235 | 50.8 | 91.9 | 8 | 28.4 | 1 | 171.5 | 18 |
| 2-1/2 | 266.7 | 57.2 | 104.6 | 8 | 31.8 | 1-1/8 | 196.9 | 25 |
| 3 | 304.8 | 66.5 | 127 | 8 | 35.1 | 1-1/4 | 228.6 | 39 |
| 4 | 355.6 | 76.2 | 157.2 | 8 | 41.1 | 1-1/2 | 273.1 | 61 |
| 5 | 419.1 | 91.9 | 185.7 | 8 | 47.8 | 1-3/4 | 323.9 | 102 |
| 6 | 482.6 | 108 | 215.9 | 8 | 53.8 | 2 | 368.3 | 156 |
| 8 | 552.5 | 127 | 269.7 | 12 | 53.8 | 2 | 438.2 | 240 |
| 10 | 673.1 | 165.1 | 323.9 | 12 | 66.5 | 2-1/2 | 539.8 | 465 |
| 12 | 762 | 184.2 | 381 | 12 | 73.2 | 2-3/4 | 619.3 | 590 |
| Physical Properties | Metric | Comments |
|---|---|---|
| Density | 0.190 - 9.01 g/cc | Average value: 7.79 g/cc Grade Count:1432 |
| Porosity | 0.000 - 5.00 % | Average value: 2.97 % Grade Count:15 |
| Particle Size | 0.000 - 300 µm | Average value: 37.9 µm Grade Count:88 |
| Permeability | 0.0150 - 1.00 | Average value: 0.509 Grade Count:4 |
| Thickness | 20.0 - 508 microns | Average value: 86.8 microns Grade Count:14 |
| Mechanical Properties | Metric | Comments |
| Hardness, Brinell | 80.0 - 600 | Average value: 251 Grade Count:564 |
| Hardness, Knoop | 97.0 - 662 | Average value: 301 Grade Count:276 |
| Hardness, Rockwell A | 51.1 - 58.0 | Average value: 54.0 Grade Count:8 |
| Hardness, Rockwell B | 37.0 - 130 | Average value: 86.2 Grade Count:503 |
| Hardness, Rockwell C | 10.0 - 71.0 | Average value: 39.6 Grade Count:447 |
| Hardness, Vickers | 82.0 - 1100 | Average value: 294 Grade Count:339 |
| Tensile Strength, Ultimate | 32.3 - 3100 MPa | Average value: 935 MPa Grade Count:1729 |
| Tensile Strength, Yield | 25.0 - 2500 MPa | Average value: 669 MPa Grade Count:1638 |
| Elongation at Break | 0.000 - 88.0 % | Average value: 26.5 % Grade Count:1583 |
| Elongation at Yield | 0.000 - 62.0 % | Average value: 22.7 % Grade Count:22 |
| Reduction of Area | 0.500 - 88.0 % | Average value: 49.3 % Grade Count:308 |
| Modulus of Elasticity | 2.36 - 310 GPa | Average value: 196 GPa Grade Count:1175 |
| Flexural Yield Strength | 58.0 - 938 MPa | Average value: 479 MPa Grade Count:4 |
| Compressive Yield Strength | 262 - 3000 MPa | Average value: 1080 MPa Grade Count:11 |
| Notched Tensile Strength | 710 - 2230 MPa | Average value: 1740 MPa Grade Count:30 |
| Bulk Modulus | 166 GPa | Average value: 166 GPa Grade Count:14 |
| Poissons Ratio | 0.120 - 0.380 | Average value: 0.282 Grade Count:310 |
| Fatigue Strength | 85.0 - 1070 MPa | Average value: 439 MPa Grade Count:54 |
| Fracture Toughness | 17.6 - 165 MPa-m½ | Average value: 90.9 MPa-m½ Grade Count:9 |
| Machinability | 18.0 - 65.0 % | Average value: 31.7 % Grade Count:126 |
| Shear Modulus | 62.1 - 86.5 GPa | Average value: 77.6 GPa Grade Count:324 |
| Shear Strength | 74.5 - 597 MPa | Average value: 358 MPa Grade Count:5 |
| Izod Impact | 16.3 - 208 J | Average value: 115 J Grade Count:140 |
| Izod Impact Unnotched | 13.6 - 149 J | Average value: 77.8 J Grade Count:13 |
| Charpy Impact | 0.500 - 404 J | Average value: 115 J Grade Count:253 |
| Charpy Impact, Unnotched | 7.46 - 294 J | Average value: 157 J Grade Count:9 |
| Charpy Impact Unnotched | 1.59 - 60.0 J/cm² | Average value: 22.0 J/cm² Grade Count:3 |
| Charpy Impact, Notched | 0.710 - 294 J/cm² | Average value: 137 J/cm² Grade Count:5 |
| Taber Abrasion, mg/1000 Cycles | 3.20 - 30.0 | Average value: 11.3 Grade Count:3 |
| Electrical Properties | Metric | Comments |
| Electrical Resistivity | 0.00000450 - 0.000145 ohm-cm | Average value: 0.0000729 ohm-cm Grade Count:962 |
| Magnetic Permeability | 1.00 - 3000 | Average value: 178 Grade Count:316 |
| Magnetic Coercive Force, Hc | 1.20 - 7.00 Oe | Average value: 2.40 Oe Grade Count:6 |
| Magnetic Saturation Flux Density, Bmax | 11900 - 17000 Gauss | Average value: 15000 Gauss Grade Count:6 |
| Magnetic Remanence, Br | 2500 - 8500 Gauss | Average value: 6000 Gauss Grade Count:6 |
| Curie Temperature | -115 - 732 °C | Average value: 266 °C Grade Count:14 |
| Thermal Properties | Metric | Comments |
| CTE, linear | 7.02 - 21.1 µm/m-°C | Average value: 15.4 µm/m-°C Grade Count:977 |
| Specific Heat Capacity | 0.200 - 0.850 J/g-°C | Average value: 0.478 J/g-°C Grade Count:934 |
| Thermal Conductivity | 10.0 - 34.3 W/m-K | Average value: 16.7 W/m-K Grade Count:567 |
| Melting Point | 1230 - 1530 °C | Average value: 1440 °C Grade Count:580 |
| Solidus | 1230 - 1480 °C | Average value: 1410 °C Grade Count:553 |
| Liquidus | 1360 - 1530 °C | Average value: 1460 °C Grade Count:553 |
| Maximum Service Temperature, Air | 100 - 1400 °C | Average value: 837 °C Grade Count:368 |
| Minimum Service Temperature, Air | -200 - -30.0 °C | Average value: -133 °C Grade Count:26 |
| Optical Properties | Metric | Comments |
| Emissivity (0-1) | 0.7 | Average value: 0.700 Grade Count:4 |
| Processing Properties | Metric | Comments |
| Processing Temperature | 382 - 863 °C | Average value: 767 °C Grade Count:4 |
| Annealing Temperature | 593 - 1200 °C | Average value: 977 °C Grade Count:31 |
| Hot-Working Temperature | 482 - 1290 °C | Average value: 960 °C Grade Count:13 |
Find out all specifications and parameters on blind flanges at our pdf chart and table, including data on mechanical characteristics of blind flanges, weight, dimensions, sizes, and physical properties. Our website provides an exhaustive compilation of the information that is critical for engineers and professionals in various sectors. In piping systems, a blind flange is an important fitting used to seal the place where the nipple or nozzle is joined to the pipe. They are used for pressure tests as well as temporary shutdowns. Our complete information section will help an operator find the appropriate blind flange that will ensure both efficient and reliable operation. Please visit our website for this important information needed in better planning and successful execution of projects.