Tube: round
ДСТУ 8938
ДСТУ 8938 - Seamless hot-deformed steel pipes - Technical specification
Seamless hot-deformed steel tubes for general purposes, made of carbon and alloy steels. Table 1 of the standard lists outside diameters from 32 to 530 mm with wall thicknesses from 2.5 to 75 mm; a size is ordered by its outside diameter and wall thickness, and the mass per metre follows the formula of the standard at a steel density of 7.85 g/cm³. In force since 1 January 2021 in place of ГОСТ 8731-74, ГОСТ 8732-78 and ГОСТ 9567-75. Tubes ordered by inside diameter or in other sizes are agreed with the producer and are not part of the size table.
| Product | Outer diameter, mm | Inner diameter, mm | Wall thickness, mm | Section area, cm2 | Mass per metre, kg/m | Section perimeter, mm | Second moment of area, cm4 | Elastic section modulus, cm3 | Plastic section modulus, cm3 | Radius of gyration, cm | Torsional constant, cm4 | Torsional modulus, cm3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ДСТУ 8938 seamless tube 178x19 | 178 | 140* | 19 | 94.908 | 74.502 | 559.203 | 3042.023 | 341.8 | 482.625 | 5.661 | 6084.046 | 683.601 |
| ДСТУ 8938 seamless tube 178x20 | 178 | 138* | 20 | 99.274 | 77.93 | 559.203 | 3147.493 | 353.651 | 501.947 | 5.631 | 6294.985 | 707.302 |
| ДСТУ 8938 seamless tube 178x22 | 178 | 134* | 22 | 107.819 | 84.638 | 559.203 | 3345.099 | 375.854 | 538.941 | 5.57 | 6690.197 | 751.708 |
| ДСТУ 8938 seamless tube 178x24 | 178 | 130* | 24 | 116.113 | 91.149 | 559.203 | 3525.779 | 396.155 | 573.792 | 5.51 | 7051.559 | 792.31 |
| ДСТУ 8938 seamless tube 178x25 | 178 | 128* | 25 | 120.166 | 94.33 | 559.203 | 3610.085 | 405.627 | 590.433 | 5.481 | 7220.169 | 811.255 |
| ДСТУ 8938 seamless tube 178x26 | 178 | 126* | 26 | 124.156 | 97.462 | 559.203 | 3690.529 | 414.666 | 606.563 | 5.452 | 7381.059 | 829.332 |
| ДСТУ 8938 seamless tube 178x28 | 178 | 122* | 28 | 131.947 | 103.578 | 559.203 | 3840.314 | 431.496 | 637.317 | 5.395 | 7680.629 | 862.992 |
| ДСТУ 8938 seamless tube 178x30 | 178 | 118* | 30 | 139.487 | 109.497 | 559.203 | 3976.069 | 446.749 | 666.12 | 5.339 | 7952.138 | 893.499 |
| ДСТУ 8938 seamless tube 178x32 | 178 | 114* | 32 | 146.775 | 115.219 | 559.203 | 4098.698 | 460.528 | 693.035 | 5.284 | 8197.395 | 921.056 |
| ДСТУ 8938 seamless tube 178x34 | 178 | 110* | 34 | 153.812 | 120.743 | 559.203 | 4209.076 | 472.93 | 718.125 | 5.231 | 8418.151 | 945.86 |
| ДСТУ 8938 seamless tube 178x35 | 178 | 108* | 35 | 157.237 | 123.431 | 559.203 | 4259.936 | 478.644 | 730.007 | 5.205 | 8519.871 | 957.289 |
| ДСТУ 8938 seamless tube 178x36 | 178 | 106* | 36 | 160.598 | 126.07 | 559.203 | 4308.047 | 484.05 | 741.456 | 5.179 | 8616.094 | 968.1 |
| ДСТУ 8938 seamless tube 178x38 | 178 | 102* | 38 | 167.133 | 131.199 | 559.203 | 4396.426 | 493.98 | 763.091 | 5.129 | 8792.853 | 987.961 |
| ДСТУ 8938 seamless tube 178x40 | 178 | 98* | 40 | 173.416 | 136.131 | 559.203 | 4474.998 | 502.809 | 783.093 | 5.08 | 8949.995 | 1005.617 |
| ДСТУ 8938 seamless tube 178x42 | 178 | 94* | 42 | 179.448 | 140.867 | 559.203 | 4544.515 | 510.62 | 801.528 | 5.032 | 9089.03 | 1021.239 |
| ДСТУ 8938 seamless tube 178x45 | 178 | 88* | 45 | 188.024 | 147.599 | 559.203 | 4633.389 | 520.606 | 826.38 | 4.964 | 9266.779 | 1041.211 |
| ДСТУ 8938 seamless tube 180x5 | 180 | 170* | 5 | 27.489 | 21.579 | 565.487 | 1053.17 | 117.019 | 153.167 | 6.19 | 2106.34 | 234.038 |
| ДСТУ 8938 seamless tube 180x5.5 | 180 | 169* | 5.5 | 30.151 | 23.669 | 565.487 | 1148.789 | 127.643 | 167.532 | 6.173 | 2297.577 | 255.286 |
| ДСТУ 8938 seamless tube 180x6 | 180 | 168* | 6 | 32.798 | 25.747 | 565.487 | 1242.725 | 138.081 | 181.728 | 6.155 | 2485.45 | 276.161 |
| ДСТУ 8938 seamless tube 180x6.5 | 180 | 167* | 6.5 | 35.429 | 27.812 | 565.487 | 1334.999 | 148.333 | 195.756 | 6.138 | 2669.997 | 296.666 |
| ДСТУ 8938 seamless tube 180x7 | 180 | 166* | 7 | 38.045 | 29.865 | 565.487 | 1425.63 | 158.403 | 209.617 | 6.121 | 2851.259 | 316.807 |
| ДСТУ 8938 seamless tube 180x7.5 | 180 | 165* | 7.5 | 40.644 | 31.906 | 565.487 | 1514.637 | 168.293 | 223.313 | 6.105 | 3029.275 | 336.586 |
| ДСТУ 8938 seamless tube 180x8 | 180 | 164* | 8 | 43.228 | 33.934 | 565.487 | 1602.041 | 178.005 | 236.843 | 6.088 | 3204.083 | 356.009 |
| ДСТУ 8938 seamless tube 180x8.5 | 180 | 163* | 8.5 | 45.797 | 35.95 | 565.487 | 1687.861 | 187.54 | 250.209 | 6.071 | 3375.722 | 375.08 |
| ДСТУ 8938 seamless tube 180x9 | 180 | 162* | 9 | 48.349 | 37.954 | 565.487 | 1772.116 | 196.902 | 263.412 | 6.054 | 3544.232 | 393.804 |
| ДСТУ 8938 seamless tube 180x9.5 | 180 | 161* | 9.5 | 50.886 | 39.945 | 565.487 | 1854.825 | 206.092 | 276.453 | 6.037 | 3709.649 | 412.183 |
| ДСТУ 8938 seamless tube 180x10 | 180 | 160* | 10 | 53.407 | 41.925 | 565.487 | 1936.006 | 215.112 | 289.333 | 6.021 | 3872.013 | 430.224 |
| ДСТУ 8938 seamless tube 180x11 | 180 | 158* | 11 | 58.402 | 45.846 | 565.487 | 2093.865 | 232.652 | 314.615 | 5.988 | 4187.73 | 465.303 |
| ДСТУ 8938 seamless tube 180x12 | 180 | 156* | 12 | 63.335 | 49.718 | 565.487 | 2245.842 | 249.538 | 339.264 | 5.955 | 4491.683 | 499.076 |
| ДСТУ 8938 seamless tube 180x13 | 180 | 154* | 13 | 68.204 | 53.54 | 565.487 | 2392.084 | 265.787 | 363.289 | 5.922 | 4784.168 | 531.574 |
| ДСТУ 8938 seamless tube 180x14 | 180 | 152* | 14 | 73.011 | 57.313 | 565.487 | 2532.738 | 281.415 | 386.699 | 5.89 | 5065.476 | 562.831 |
| ДСТУ 8938 seamless tube 180x15 | 180 | 150* | 15 | 77.754 | 61.037 | 565.487 | 2667.948 | 296.439 | 409.5 | 5.858 | 5335.897 | 592.877 |
| ДСТУ 8938 seamless tube 180x16 | 180 | 148* | 16 | 82.435 | 64.712 | 565.487 | 2797.857 | 310.873 | 431.701 | 5.826 | 5595.714 | 621.746 |
| ДСТУ 8938 seamless tube 180x17 | 180 | 146* | 17 | 87.054 | 68.337 | 565.487 | 2922.605 | 324.734 | 453.311 | 5.794 | 5845.209 | 649.468 |
| ДСТУ 8938 seamless tube 180x18 | 180 | 144* | 18 | 91.609 | 71.913 | 565.487 | 3042.33 | 338.037 | 474.336 | 5.763 | 6084.659 | 676.073 |
| ДСТУ 8938 seamless tube 180x19 | 180 | 142* | 19 | 96.101 | 75.44 | 565.487 | 3157.169 | 350.797 | 494.785 | 5.732 | 6314.337 | 701.593 |
| ДСТУ 8938 seamless tube 180x20 | 180 | 140* | 20 | 100.531 | 78.917 | 565.487 | 3267.256 | 363.028 | 514.667 | 5.701 | 6534.513 | 726.057 |
| ДСТУ 8938 seamless tube 180x22 | 180 | 136* | 22 | 109.202 | 85.723 | 565.487 | 3473.708 | 385.968 | 552.757 | 5.64 | 6947.416 | 771.935 |
| ДСТУ 8938 seamless tube 180x24 | 180 | 132* | 24 | 117.621 | 92.333 | 565.487 | 3662.725 | 406.969 | 588.672 | 5.58 | 7325.45 | 813.939 |
| ДСТУ 8938 seamless tube 180x25 | 180 | 130* | 25 | 121.737 | 95.563 | 565.487 | 3751.013 | 416.779 | 605.833 | 5.551 | 7502.025 | 833.558 |
| ДСТУ 8938 seamless tube 180x26 | 180 | 128* | 26 | 125.789 | 98.745 | 565.487 | 3835.318 | 426.146 | 622.475 | 5.522 | 7670.636 | 852.293 |
| ДСТУ 8938 seamless tube 180x28 | 180 | 124* | 28 | 133.706 | 104.959 | 565.487 | 3992.467 | 443.607 | 654.229 | 5.464 | 7984.933 | 887.215 |
| ДСТУ 8938 seamless tube 180x30 | 180 | 120* | 30 | 141.372 | 110.977 | 565.487 | 4135.121 | 459.458 | 684 | 5.408 | 8270.243 | 918.916 |
| ДСТУ 8938 seamless tube 180x32 | 180 | 116* | 32 | 148.786 | 116.797 | 565.487 | 4264.202 | 473.8 | 711.851 | 5.354 | 8528.404 | 947.6 |
| ДСТУ 8938 seamless tube 180x34 | 180 | 112* | 34 | 155.949 | 122.42 | 565.487 | 4380.598 | 486.733 | 737.845 | 5.3 | 8761.196 | 973.466 |
| ДСТУ 8938 seamless tube 180x35 | 180 | 110* | 35 | 159.436 | 125.157 | 565.487 | 4434.309 | 492.701 | 750.167 | 5.274 | 8868.618 | 985.402 |
| ДСТУ 8938 seamless tube 180x36 | 180 | 108* | 36 | 162.86 | 127.845 | 565.487 | 4485.169 | 498.352 | 762.048 | 5.248 | 8970.338 | 996.704 |
| ДСТУ 8938 seamless tube 180x38 | 180 | 104* | 38 | 169.52 | 133.073 | 565.487 | 4578.744 | 508.749 | 784.523 | 5.197 | 9157.489 | 1017.499 |
| ДСТУ 8938 seamless tube 180x40 | 180 | 100* | 40 | 175.929 | 138.104 | 565.487 | 4662.123 | 518.014 | 805.333 | 5.148 | 9324.247 | 1036.027 |
| ДСТУ 8938 seamless tube 180x42 | 180 | 96* | 42 | 182.087 | 142.938 | 565.487 | 4736.075 | 526.231 | 824.544 | 5.1 | 9472.151 | 1052.461 |
| ДСТУ 8938 seamless tube 180x45 | 180 | 90* | 45 | 190.852 | 149.819 | 565.487 | 4830.935 | 536.771 | 850.5 | 5.031 | 9661.87 | 1073.541 |
| ДСТУ 8938 seamless tube 194x5 | 194 | 184* | 5 | 29.688 | 23.305 | 609.469 | 1326.536 | 136.756 | 178.647 | 6.684 | 2653.073 | 273.513 |
| ДСТУ 8938 seamless tube 194x5.5 | 194 | 183* | 5.5 | 32.57 | 25.568 | 609.469 | 1447.859 | 149.264 | 195.483 | 6.667 | 2895.718 | 298.528 |
| ДСТУ 8938 seamless tube 194x6 | 194 | 182* | 6 | 35.437 | 27.818 | 609.469 | 1567.209 | 161.568 | 212.136 | 6.65 | 3134.417 | 323.136 |
| ДСТУ 8938 seamless tube 194x6.5 | 194 | 181* | 6.5 | 38.288 | 30.056 | 609.469 | 1684.607 | 173.671 | 228.607 | 6.633 | 3369.215 | 347.342 |
| ДСТУ 8938 seamless tube 194x7 | 194 | 180* | 7 | 41.123 | 32.282 | 609.469 | 1800.076 | 185.575 | 244.897 | 6.616 | 3600.152 | 371.15 |
| ДСТУ 8938 seamless tube 194x7.5 | 194 | 179* | 7.5 | 43.943 | 34.495 | 609.469 | 1913.636 | 197.282 | 261.008 | 6.599 | 3827.273 | 394.564 |
| ДСТУ 8938 seamless tube 194x8 | 194 | 178* | 8 | 46.747 | 36.696 | 609.469 | 2025.309 | 208.795 | 276.939 | 6.582 | 4050.619 | 417.59 |
| ДСТУ 8938 seamless tube 194x8.5 | 194 | 177* | 8.5 | 49.535 | 38.885 | 609.469 | 2135.116 | 220.115 | 292.692 | 6.565 | 4270.232 | 440.23 |
| ДСТУ 8938 seamless tube 194x9 | 194 | 176* | 9 | 52.308 | 41.061 | 609.469 | 2243.077 | 231.245 | 308.268 | 6.548 | 4486.154 | 462.49 |
| ДСТУ 8938 seamless tube 194x9.5 | 194 | 175* | 9.5 | 55.064 | 43.225 | 609.469 | 2349.214 | 242.187 | 323.668 | 6.532 | 4698.427 | 484.374 |
| ДСТУ 8938 seamless tube 194x10 | 194 | 174* | 10 | 57.805 | 45.377 | 609.469 | 2453.546 | 252.943 | 338.893 | 6.515 | 4907.092 | 505.886 |
| ДСТУ 8938 seamless tube 194x11 | 194 | 172* | 11 | 63.24 | 49.644 | 609.469 | 2656.881 | 273.905 | 368.823 | 6.482 | 5313.763 | 547.811 |
| ДСТУ 8938 seamless tube 194x12 | 194 | 170* | 12 | 68.612 | 53.861 | 609.469 | 2853.246 | 294.149 | 398.064 | 6.449 | 5706.492 | 588.298 |
| ДСТУ 8938 seamless tube 194x13 | 194 | 168* | 13 | 73.922 | 58.029 | 609.469 | 3042.801 | 313.691 | 426.625 | 6.416 | 6085.602 | 627.382 |
| ДСТУ 8938 seamless tube 194x14 | 194 | 166* | 14 | 79.168 | 62.147 | 609.469 | 3225.706 | 332.547 | 454.515 | 6.383 | 6451.411 | 665.094 |
| ДСТУ 8938 seamless tube 194x15 | 194 | 164* | 15 | 84.352 | 66.216 | 609.469 | 3402.117 | 350.734 | 481.74 | 6.351 | 6804.235 | 701.468 |
| ДСТУ 8938 seamless tube 194x16 | 194 | 162* | 16 | 89.473 | 70.236 | 609.469 | 3572.192 | 368.267 | 508.309 | 6.319 | 7144.384 | 736.534 |
| ДСТУ 8938 seamless tube 194x17 | 194 | 160* | 17 | 94.531 | 74.206 | 609.469 | 3736.083 | 385.163 | 534.231 | 6.287 | 7472.165 | 770.326 |
| ДСТУ 8938 seamless tube 194x18 | 194 | 158* | 18 | 99.526 | 78.128 | 609.469 | 3893.941 | 401.437 | 559.512 | 6.255 | 7787.883 | 802.874 |
| ДСТУ 8938 seamless tube 194x19 | 194 | 156* | 19 | 104.458 | 81.999 | 609.469 | 4045.918 | 417.105 | 584.161 | 6.224 | 8091.836 | 834.21 |
| ДСТУ 8938 seamless tube 194x20 | 194 | 154* | 20 | 109.327 | 85.822 | 609.469 | 4192.16 | 432.181 | 608.187 | 6.192 | 8384.32 | 864.363 |
| ДСТУ 8938 seamless tube 194x22 | 194 | 150* | 22 | 118.878 | 93.319 | 609.469 | 4468.025 | 460.621 | 654.397 | 6.131 | 8936.049 | 921.242 |
| ДСТУ 8938 seamless tube 194x24 | 194 | 146* | 24 | 128.177 | 100.619 | 609.469 | 4722.681 | 486.874 | 698.208 | 6.07 | 9445.362 | 973.749 |
| ДСТУ 8938 seamless tube 194x25 | 194 | 144* | 25 | 132.732 | 104.195 | 609.469 | 4842.406 | 499.217 | 719.233 | 6.04 | 9684.812 | 998.434 |
| ДСТУ 8938 seamless tube 194x26 | 194 | 142* | 26 | 137.225 | 107.721 | 609.469 | 4957.245 | 511.056 | 739.683 | 6.01 | 9914.489 | 1022.112 |
| ДСТУ 8938 seamless tube 194x28 | 194 | 138* | 28 | 146.021 | 114.627 | 609.469 | 5172.802 | 533.279 | 778.885 | 5.952 | 10345.604 | 1066.557 |
| ДСТУ 8938 seamless tube 194x30 | 194 | 134* | 30 | 154.566 | 121.335 | 609.469 | 5370.408 | 553.65 | 815.88 | 5.894 | 10740.816 | 1107.301 |
| ДСТУ 8938 seamless tube 194x32 | 194 | 130* | 32 | 162.86 | 127.845 | 609.469 | 5551.089 | 572.277 | 850.731 | 5.838 | 11102.177 | 1144.554 |
| ДСТУ 8938 seamless tube 194x34 | 194 | 126* | 34 | 170.903 | 134.159 | 609.469 | 5715.839 | 589.262 | 883.501 | 5.783 | 11431.678 | 1178.523 |
| ДСТУ 8938 seamless tube 194x35 | 194 | 124* | 35 | 174.83 | 137.241 | 609.469 | 5792.543 | 597.169 | 899.127 | 5.756 | 11585.086 | 1194.339 |
| ДСТУ 8938 seamless tube 194x36 | 194 | 122* | 36 | 178.694 | 140.275 | 609.469 | 5865.624 | 604.703 | 914.256 | 5.729 | 11731.247 | 1209.407 |
| ДСТУ 8938 seamless tube 194x38 | 194 | 118* | 38 | 186.234 | 146.193 | 609.469 | 6001.378 | 618.699 | 943.059 | 5.677 | 12002.756 | 1237.398 |
| ДСТУ 8938 seamless tube 194x40 | 194 | 114* | 40 | 193.522 | 151.915 | 609.469 | 6124.007 | 631.341 | 969.973 | 5.625 | 12248.014 | 1262.682 |
| ДСТУ 8938 seamless tube 194x42 | 194 | 110* | 42 | 200.559 | 157.439 | 609.469 | 6234.385 | 642.72 | 995.064 | 5.575 | 12468.77 | 1285.44 |
| ДСТУ 8938 seamless tube 194x45 | 194 | 104* | 45 | 210.644 | 165.355 | 609.469 | 6378.82 | 657.61 | 1029.42 | 5.503 | 12757.641 | 1315.221 |
| ДСТУ 8938 seamless tube 203x6 | 203 | 191* | 6 | 37.134 | 29.15 | 637.743 | 1803.07 | 177.642 | 232.926 | 6.968 | 3606.139 | 355.285 |
| ДСТУ 8938 seamless tube 203x6.5 | 203 | 190* | 6.5 | 40.126 | 31.499 | 637.743 | 1938.813 | 191.016 | 251.071 | 6.951 | 3877.625 | 382.032 |
| ДСТУ 8938 seamless tube 203x7 | 203 | 189* | 7 | 43.103 | 33.836 | 637.743 | 2072.429 | 204.18 | 269.026 | 6.934 | 4144.859 | 408.36 |
| ДСТУ 8938 seamless tube 203x7.5 | 203 | 188* | 7.5 | 46.064 | 36.16 | 637.743 | 2203.942 | 217.137 | 286.793 | 6.917 | 4407.884 | 434.274 |
| ДСТУ 8938 seamless tube 203x8 | 203 | 187* | 8 | 49.009 | 38.472 | 637.743 | 2333.372 | 229.889 | 304.371 | 6.9 | 4666.745 | 459.778 |
| ДСТУ 8938 seamless tube 203x8.5 | 203 | 186* | 8.5 | 51.938 | 40.772 | 637.743 | 2460.743 | 242.438 | 321.762 | 6.883 | 4921.486 | 484.875 |
| ДСТУ 8938 seamless tube 203x9 | 203 | 185* | 9 | 54.852 | 43.059 | 637.743 | 2586.076 | 254.786 | 338.967 | 6.866 | 5172.152 | 509.572 |
| ДСТУ 8938 seamless tube 203x9.5 | 203 | 184* | 9.5 | 57.75 | 45.334 | 637.743 | 2709.393 | 266.935 | 355.987 | 6.849 | 5418.785 | 533.87 |
| ДСТУ 8938 seamless tube 203x10 | 203 | 183* | 10 | 60.633 | 47.597 | 637.743 | 2830.715 | 278.888 | 372.823 | 6.833 | 5661.43 | 557.776 |
| ДСТУ 8938 seamless tube 203x11 | 203 | 181* | 11 | 66.35 | 52.085 | 637.743 | 3067.464 | 302.213 | 405.948 | 6.799 | 6134.927 | 604.426 |
| ДСТУ 8938 seamless tube 203x12 | 203 | 179* | 12 | 72.005 | 56.524 | 637.743 | 3296.493 | 324.778 | 438.348 | 6.766 | 6592.986 | 649.555 |
| ДСТУ 8938 seamless tube 203x13 | 203 | 177* | 13 | 77.597 | 60.914 | 637.743 | 3517.972 | 346.598 | 470.032 | 6.733 | 7035.945 | 693.197 |
| ДСТУ 8938 seamless tube 203x14 | 203 | 175* | 14 | 83.127 | 65.254 | 637.743 | 3732.07 | 367.692 | 501.009 | 6.7 | 7464.14 | 735.383 |
| ДСТУ 8938 seamless tube 203x15 | 203 | 173* | 15 | 88.593 | 69.545 | 637.743 | 3938.952 | 388.074 | 531.285 | 6.668 | 7877.903 | 776.148 |
* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.