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 203x16 | 203 | 171* | 16 | 93.996 | 73.787 | 637.743 | 4138.781 | 407.762 | 560.869 | 6.636 | 8277.563 | 815.523 |
| ДСТУ 8938 seamless tube 203x17 | 203 | 169* | 17 | 99.337 | 77.98 | 637.743 | 4331.721 | 426.771 | 589.77 | 6.604 | 8663.442 | 853.541 |
| ДСТУ 8938 seamless tube 203x18 | 203 | 167* | 18 | 104.615 | 82.123 | 637.743 | 4517.931 | 445.116 | 617.994 | 6.572 | 9035.862 | 890.233 |
| ДСТУ 8938 seamless tube 203x19 | 203 | 165* | 19 | 109.83 | 86.217 | 637.743 | 4697.57 | 462.815 | 645.55 | 6.54 | 9395.14 | 925.63 |
| ДСТУ 8938 seamless tube 203x20 | 203 | 163* | 20 | 114.982 | 90.261 | 637.743 | 4870.794 | 479.881 | 672.447 | 6.509 | 9741.587 | 959.762 |
| ДСТУ 8938 seamless tube 203x22 | 203 | 159* | 22 | 125.098 | 98.202 | 637.743 | 5198.613 | 512.179 | 724.291 | 6.446 | 10397.226 | 1024.357 |
| ДСТУ 8938 seamless tube 203x24 | 203 | 155* | 24 | 134.963 | 105.946 | 637.743 | 5502.603 | 542.128 | 773.592 | 6.385 | 11005.206 | 1084.257 |
| ДСТУ 8938 seamless tube 203x25 | 203 | 153* | 25 | 139.801 | 109.744 | 637.743 | 5646.033 | 556.259 | 797.308 | 6.355 | 11292.066 | 1112.519 |
| ДСТУ 8938 seamless tube 203x26 | 203 | 151* | 26 | 144.576 | 113.492 | 637.743 | 5783.947 | 569.847 | 820.413 | 6.325 | 11567.895 | 1139.694 |
| ДСТУ 8938 seamless tube 203x28 | 203 | 147* | 28 | 153.938 | 120.841 | 637.743 | 6043.8 | 595.448 | 864.817 | 6.266 | 12087.6 | 1190.897 |
| ДСТУ 8938 seamless tube 203x30 | 203 | 143* | 30 | 163.049 | 127.993 | 637.743 | 6283.284 | 619.043 | 906.87 | 6.208 | 12566.568 | 1238.085 |
| ДСТУ 8938 seamless tube 203x32 | 203 | 139* | 32 | 171.908 | 134.948 | 637.743 | 6503.493 | 640.738 | 946.635 | 6.151 | 13006.985 | 1281.476 |
| ДСТУ 8938 seamless tube 203x34 | 203 | 135* | 34 | 180.516 | 141.705 | 637.743 | 6705.489 | 660.639 | 984.175 | 6.095 | 13410.979 | 1321.279 |
| ДСТУ 8938 seamless tube 203x35 | 203 | 133* | 35 | 184.726 | 145.01 | 637.743 | 6799.982 | 669.949 | 1002.132 | 6.067 | 13599.964 | 1339.898 |
| ДСТУ 8938 seamless tube 203x36 | 203 | 131* | 36 | 188.873 | 148.265 | 637.743 | 6890.307 | 678.848 | 1019.556 | 6.04 | 13780.613 | 1357.696 |
| ДСТУ 8938 seamless tube 203x38 | 203 | 127* | 38 | 196.978 | 154.628 | 637.743 | 7058.948 | 695.463 | 1052.841 | 5.986 | 14117.896 | 1390.926 |
| ДСТУ 8938 seamless tube 203x40 | 203 | 123* | 40 | 204.832 | 160.793 | 637.743 | 7212.385 | 710.58 | 1084.093 | 5.934 | 14424.77 | 1421.16 |
| ДСТУ 8938 seamless tube 203x42 | 203 | 119* | 42 | 212.434 | 166.761 | 637.743 | 7351.561 | 724.292 | 1113.378 | 5.883 | 14703.123 | 1448.583 |
| ДСТУ 8938 seamless tube 203x45 | 203 | 113* | 45 | 223.367 | 175.343 | 637.743 | 7535.573 | 742.421 | 1153.755 | 5.808 | 15071.146 | 1484.842 |
| ДСТУ 8938 seamless tube 203x48 | 203 | 107* | 48 | 233.734 | 183.482 | 637.743 | 7692.494 | 757.881 | 1190.064 | 5.737 | 15384.989 | 1515.762 |
| ДСТУ 8938 seamless tube 203x50 | 203 | 103* | 50 | 240.332 | 188.66 | 637.743 | 7783.447 | 766.842 | 1212.117 | 5.691 | 15566.894 | 1533.684 |
| ДСТУ 8938 seamless tube 219x6 | 219 | 207* | 6 | 40.15 | 31.517 | 688.009 | 2278.738 | 208.104 | 272.286 | 7.534 | 4557.476 | 416.208 |
| ДСТУ 8938 seamless tube 219x6.5 | 219 | 206* | 6.5 | 43.393 | 34.064 | 688.009 | 2451.637 | 223.894 | 293.607 | 7.517 | 4903.274 | 447.788 |
| ДСТУ 8938 seamless tube 219x7 | 219 | 205* | 7 | 46.621 | 36.598 | 688.009 | 2622.037 | 239.455 | 314.722 | 7.499 | 5244.073 | 478.911 |
| ДСТУ 8938 seamless tube 219x7.5 | 219 | 204* | 7.5 | 49.834 | 39.119 | 688.009 | 2789.96 | 254.791 | 335.633 | 7.482 | 5579.921 | 509.582 |
| ДСТУ 8938 seamless tube 219x8 | 219 | 203* | 8 | 53.03 | 41.629 | 688.009 | 2955.433 | 269.903 | 356.339 | 7.465 | 5910.866 | 539.805 |
| ДСТУ 8938 seamless tube 219x8.5 | 219 | 202* | 8.5 | 56.211 | 44.126 | 688.009 | 3118.478 | 284.793 | 376.842 | 7.448 | 6236.956 | 569.585 |
| ДСТУ 8938 seamless tube 219x9 | 219 | 201* | 9 | 59.376 | 46.61 | 688.009 | 3279.119 | 299.463 | 397.143 | 7.431 | 6558.239 | 598.926 |
| ДСТУ 8938 seamless tube 219x9.5 | 219 | 200* | 9.5 | 62.526 | 49.083 | 688.009 | 3437.381 | 313.916 | 417.243 | 7.415 | 6874.762 | 627.832 |
| ДСТУ 8938 seamless tube 219x10 | 219 | 199* | 10 | 65.659 | 51.543 | 688.009 | 3593.287 | 328.154 | 437.143 | 7.398 | 7186.573 | 656.308 |
| ДСТУ 8938 seamless tube 219x11 | 219 | 197* | 11 | 71.88 | 56.426 | 688.009 | 3898.123 | 355.993 | 476.348 | 7.364 | 7796.245 | 711.986 |
| ДСТУ 8938 seamless tube 219x12 | 219 | 195* | 12 | 78.037 | 61.259 | 688.009 | 4193.815 | 382.997 | 514.764 | 7.331 | 8387.629 | 765.994 |
| ДСТУ 8938 seamless tube 219x13 | 219 | 193* | 13 | 84.132 | 66.044 | 688.009 | 4480.547 | 409.182 | 552.4 | 7.298 | 8961.094 | 818.365 |
| ДСТУ 8938 seamless tube 219x14 | 219 | 191* | 14 | 90.164 | 70.779 | 688.009 | 4758.502 | 434.566 | 589.265 | 7.265 | 9517.005 | 869.133 |
| ДСТУ 8938 seamless tube 219x15 | 219 | 189* | 15 | 96.133 | 75.464 | 688.009 | 5027.862 | 459.165 | 625.365 | 7.232 | 10055.724 | 918.331 |
| ДСТУ 8938 seamless tube 219x16 | 219 | 187* | 16 | 102.039 | 80.101 | 688.009 | 5288.805 | 482.996 | 660.709 | 7.199 | 10577.611 | 965.992 |
| ДСТУ 8938 seamless tube 219x17 | 219 | 185* | 17 | 107.882 | 84.688 | 688.009 | 5541.509 | 506.074 | 695.306 | 7.167 | 11083.018 | 1012.148 |
| ДСТУ 8938 seamless tube 219x18 | 219 | 183* | 18 | 113.663 | 89.225 | 688.009 | 5786.148 | 528.415 | 729.162 | 7.135 | 11572.296 | 1056.831 |
| ДСТУ 8938 seamless tube 219x19 | 219 | 181* | 19 | 119.381 | 93.714 | 688.009 | 6022.897 | 550.036 | 762.286 | 7.103 | 12045.793 | 1100.072 |
| ДСТУ 8938 seamless tube 219x20 | 219 | 179* | 20 | 125.035 | 98.153 | 688.009 | 6251.926 | 570.952 | 794.687 | 7.071 | 12503.851 | 1141.904 |
| ДСТУ 8938 seamless tube 219x22 | 219 | 175* | 22 | 136.157 | 106.883 | 688.009 | 6687.503 | 610.731 | 857.347 | 7.008 | 13375.006 | 1221.462 |
| ДСТУ 8938 seamless tube 219x24 | 219 | 171* | 24 | 147.027 | 115.416 | 688.009 | 7094.214 | 647.873 | 917.208 | 6.946 | 14188.428 | 1295.747 |
| ДСТУ 8938 seamless tube 219x25 | 219 | 169* | 25 | 152.367 | 119.608 | 688.009 | 7287.154 | 665.494 | 946.108 | 6.916 | 14574.308 | 1330.987 |
| ДСТУ 8938 seamless tube 219x26 | 219 | 167* | 26 | 157.645 | 123.751 | 688.009 | 7473.364 | 682.499 | 974.333 | 6.885 | 14946.728 | 1364.998 |
| ДСТУ 8938 seamless tube 219x28 | 219 | 163* | 28 | 168.012 | 131.89 | 688.009 | 7826.226 | 714.724 | 1028.785 | 6.825 | 15652.453 | 1429.448 |
| ДСТУ 8938 seamless tube 219x30 | 219 | 159* | 30 | 178.128 | 139.831 | 688.009 | 8154.046 | 744.662 | 1080.63 | 6.766 | 16308.092 | 1489.323 |
| ДСТУ 8938 seamless tube 219x32 | 219 | 155* | 32 | 187.993 | 147.574 | 688.009 | 8458.036 | 772.423 | 1129.931 | 6.708 | 16916.072 | 1544.847 |
| ДСТУ 8938 seamless tube 219x34 | 219 | 151* | 34 | 197.606 | 155.121 | 688.009 | 8739.38 | 798.117 | 1176.751 | 6.65 | 17478.76 | 1596.234 |
| ДСТУ 8938 seamless tube 219x35 | 219 | 149* | 35 | 202.319 | 158.82 | 688.009 | 8871.922 | 810.221 | 1199.252 | 6.622 | 17743.844 | 1620.442 |
| ДСТУ 8938 seamless tube 219x36 | 219 | 147* | 36 | 206.968 | 162.47 | 688.009 | 8999.233 | 821.848 | 1221.156 | 6.594 | 17998.465 | 1643.695 |
| ДСТУ 8938 seamless tube 219x38 | 219 | 143* | 38 | 216.079 | 169.622 | 688.009 | 9238.717 | 843.718 | 1263.209 | 6.539 | 18477.433 | 1687.437 |
| ДСТУ 8938 seamless tube 219x40 | 219 | 139* | 40 | 224.938 | 176.576 | 688.009 | 9458.926 | 863.829 | 1302.973 | 6.485 | 18917.851 | 1727.658 |
| ДСТУ 8938 seamless tube 219x42 | 219 | 135* | 42 | 233.546 | 183.334 | 688.009 | 9660.922 | 882.276 | 1340.514 | 6.432 | 19321.844 | 1764.552 |
| ДСТУ 8938 seamless tube 219x45 | 219 | 129* | 45 | 245.987 | 193.1 | 688.009 | 9932.021 | 907.034 | 1392.795 | 6.354 | 19864.041 | 1814.068 |
| ДСТУ 8938 seamless tube 219x48 | 219 | 123* | 48 | 257.862 | 202.422 | 688.009 | 10167.818 | 928.568 | 1440.432 | 6.279 | 20335.636 | 1857.136 |
| ДСТУ 8938 seamless tube 219x50 | 219 | 119* | 50 | 265.465 | 208.39 | 688.009 | 10306.994 | 941.278 | 1469.717 | 6.231 | 20613.988 | 1882.556 |
| ДСТУ 8938 seamless tube 245x6.5 | 245 | 232* | 6.5 | 48.703 | 38.231 | 769.69 | 3465.46 | 282.895 | 369.826 | 8.435 | 6930.919 | 565.789 |
| ДСТУ 8938 seamless tube 245x7 | 245 | 231* | 7 | 52.339 | 41.086 | 769.69 | 3709.064 | 302.781 | 396.622 | 8.418 | 7418.128 | 605.561 |
| ДСТУ 8938 seamless tube 245x7.5 | 245 | 230* | 7.5 | 55.96 | 43.928 | 769.69 | 3949.525 | 322.41 | 423.188 | 8.401 | 7899.05 | 644.82 |
| ДСТУ 8938 seamless tube 245x8 | 245 | 229* | 8 | 59.565 | 46.758 | 769.69 | 4186.87 | 341.785 | 449.523 | 8.384 | 8373.74 | 683.571 |
| ДСТУ 8938 seamless tube 245x8.5 | 245 | 228* | 8.5 | 63.154 | 49.576 | 769.69 | 4421.126 | 360.908 | 475.629 | 8.367 | 8842.252 | 721.816 |
| ДСТУ 8938 seamless tube 245x9 | 245 | 227* | 9 | 66.727 | 52.381 | 769.69 | 4652.32 | 379.781 | 501.507 | 8.35 | 9304.639 | 759.562 |
| ДСТУ 8938 seamless tube 245x9.5 | 245 | 226* | 9.5 | 70.285 | 55.174 | 769.69 | 4880.478 | 398.406 | 527.158 | 8.333 | 9760.956 | 796.813 |
| ДСТУ 8938 seamless tube 245x10 | 245 | 225* | 10 | 73.827 | 57.955 | 769.69 | 5105.628 | 416.786 | 552.583 | 8.316 | 10211.256 | 833.572 |
| ДСТУ 8938 seamless tube 245x11 | 245 | 223* | 11 | 80.865 | 63.479 | 769.69 | 5547.008 | 452.817 | 602.76 | 8.282 | 11094.016 | 905.634 |
| ДСТУ 8938 seamless tube 245x12 | 245 | 221* | 12 | 87.839 | 68.954 | 769.69 | 5976.671 | 487.891 | 652.044 | 8.249 | 11953.341 | 975.783 |
| ДСТУ 8938 seamless tube 245x13 | 245 | 219* | 13 | 94.75 | 74.379 | 769.69 | 6394.825 | 522.027 | 700.444 | 8.215 | 12789.651 | 1044.053 |
| ДСТУ 8938 seamless tube 245x14 | 245 | 217* | 14 | 101.599 | 79.755 | 769.69 | 6801.679 | 555.239 | 747.969 | 8.182 | 13603.358 | 1110.478 |
| ДСТУ 8938 seamless tube 245x15 | 245 | 215* | 15 | 108.385 | 85.082 | 769.69 | 7197.438 | 587.546 | 794.625 | 8.149 | 14394.876 | 1175.092 |
| ДСТУ 8938 seamless tube 245x16 | 245 | 213* | 16 | 115.108 | 90.36 | 769.69 | 7582.305 | 618.964 | 840.421 | 8.116 | 15164.61 | 1237.927 |
| ДСТУ 8938 seamless tube 245x17 | 245 | 211* | 17 | 121.768 | 95.588 | 769.69 | 7956.482 | 649.509 | 885.366 | 8.083 | 15912.964 | 1299.017 |
| ДСТУ 8938 seamless tube 245x18 | 245 | 209* | 18 | 128.365 | 100.767 | 769.69 | 8320.169 | 679.197 | 929.466 | 8.051 | 16640.338 | 1358.395 |
| ДСТУ 8938 seamless tube 245x19 | 245 | 207* | 19 | 134.9 | 105.896 | 769.69 | 8673.563 | 708.046 | 972.73 | 8.018 | 17347.127 | 1416.092 |
| ДСТУ 8938 seamless tube 245x20 | 245 | 205* | 20 | 141.372 | 110.977 | 769.69 | 9016.862 | 736.07 | 1015.167 | 7.986 | 18033.724 | 1472.141 |
| ДСТУ 8938 seamless tube 245x22 | 245 | 201* | 22 | 154.127 | 120.989 | 769.69 | 9673.945 | 789.71 | 1097.587 | 7.923 | 19347.889 | 1579.42 |
| ДСТУ 8938 seamless tube 245x24 | 245 | 197* | 24 | 166.63 | 130.805 | 769.69 | 10292.948 | 840.241 | 1176.792 | 7.859 | 20585.896 | 1680.481 |
| ДСТУ 8938 seamless tube 245x25 | 245 | 195* | 25 | 172.788 | 135.638 | 769.69 | 10588.64 | 864.379 | 1215.208 | 7.828 | 21177.28 | 1728.758 |
| ДСТУ 8938 seamless tube 245x26 | 245 | 193* | 26 | 178.882 | 140.423 | 769.69 | 10875.372 | 887.785 | 1252.845 | 7.797 | 21750.744 | 1775.571 |
| ДСТУ 8938 seamless tube 245x28 | 245 | 189* | 28 | 190.883 | 149.843 | 769.69 | 11422.687 | 932.464 | 1325.809 | 7.736 | 22845.375 | 1864.929 |
| ДСТУ 8938 seamless tube 245x30 | 245 | 185* | 30 | 202.633 | 159.067 | 769.69 | 11936.334 | 974.395 | 1395.75 | 7.675 | 23872.668 | 1948.789 |
| ДСТУ 8938 seamless tube 245x32 | 245 | 181* | 32 | 214.131 | 168.093 | 769.69 | 12417.722 | 1013.692 | 1462.731 | 7.615 | 24835.444 | 2027.383 |
| ДСТУ 8938 seamless tube 245x34 | 245 | 177* | 34 | 225.378 | 176.922 | 769.69 | 12868.23 | 1050.468 | 1526.815 | 7.556 | 25736.461 | 2100.936 |
| ДСТУ 8938 seamless tube 245x35 | 245 | 175* | 35 | 230.907 | 181.262 | 769.69 | 13082.328 | 1067.945 | 1557.792 | 7.527 | 26164.656 | 2135.89 |
| ДСТУ 8938 seamless tube 245x36 | 245 | 173* | 36 | 236.373 | 185.553 | 769.69 | 13289.21 | 1084.833 | 1588.068 | 7.498 | 26578.42 | 2169.667 |
| ДСТУ 8938 seamless tube 245x38 | 245 | 169* | 38 | 247.118 | 193.987 | 769.69 | 13681.979 | 1116.896 | 1646.553 | 7.441 | 27363.958 | 2233.793 |
| ДСТУ 8938 seamless tube 245x40 | 245 | 165* | 40 | 257.611 | 202.224 | 769.69 | 14047.828 | 1146.761 | 1702.333 | 7.385 | 28095.656 | 2293.523 |
| ДСТУ 8938 seamless tube 245x42 | 245 | 161* | 42 | 267.852 | 210.264 | 769.69 | 14388.015 | 1174.532 | 1755.474 | 7.329 | 28776.03 | 2349.064 |
| ДСТУ 8938 seamless tube 245x45 | 245 | 155* | 45 | 282.743 | 221.954 | 769.69 | 14852.861 | 1212.478 | 1830.375 | 7.248 | 29705.722 | 2424.957 |
| ДСТУ 8938 seamless tube 245x48 | 245 | 149* | 48 | 297.069 | 233.199 | 769.69 | 15266.747 | 1246.265 | 1899.696 | 7.169 | 30533.495 | 2492.53 |
| ДСТУ 8938 seamless tube 245x50 | 245 | 145* | 50 | 306.305 | 240.45 | 769.69 | 15516.277 | 1266.635 | 1942.917 | 7.117 | 31032.554 | 2533.27 |
| ДСТУ 8938 seamless tube 273x6.5 | 273 | 260* | 6.5 | 54.42 | 42.72 | 857.655 | 4834.184 | 354.153 | 461.736 | 9.425 | 9668.368 | 708.305 |
| ДСТУ 8938 seamless tube 273x7 | 273 | 259* | 7 | 58.496 | 45.92 | 857.655 | 5177.302 | 379.29 | 495.406 | 9.408 | 10354.604 | 758.579 |
| ДСТУ 8938 seamless tube 273x7.5 | 273 | 258* | 7.5 | 62.557 | 49.107 | 857.655 | 5516.469 | 404.137 | 528.818 | 9.391 | 11032.937 | 808.274 |
| ДСТУ 8938 seamless tube 273x8 | 273 | 257* | 8 | 66.602 | 52.282 | 857.655 | 5851.714 | 428.697 | 561.971 | 9.373 | 11703.429 | 857.394 |
| ДСТУ 8938 seamless tube 273x8.5 | 273 | 256* | 8.5 | 70.631 | 55.445 | 857.655 | 6183.069 | 452.972 | 594.867 | 9.356 | 12366.139 | 905.944 |
| ДСТУ 8938 seamless tube 273x9 | 273 | 255* | 9 | 74.644 | 58.596 | 857.655 | 6510.564 | 476.964 | 627.507 | 9.339 | 13021.128 | 953.929 |
| ДСТУ 8938 seamless tube 273x9.5 | 273 | 254* | 9.5 | 78.642 | 61.734 | 857.655 | 6834.228 | 500.676 | 659.892 | 9.322 | 13668.457 | 1001.352 |
| ДСТУ 8938 seamless tube 273x10 | 273 | 253* | 10 | 82.624 | 64.86 | 857.655 | 7154.093 | 524.109 | 692.023 | 9.305 | 14308.185 | 1048.219 |
| ДСТУ 8938 seamless tube 273x11 | 273 | 251* | 11 | 90.541 | 71.074 | 857.655 | 7782.539 | 570.149 | 755.528 | 9.271 | 15565.078 | 1140.299 |
| ДСТУ 8938 seamless tube 273x12 | 273 | 249* | 12 | 98.395 | 77.24 | 857.655 | 8396.141 | 615.102 | 818.028 | 9.237 | 16792.282 | 1230.204 |
* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.