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 121x4 | 121 | 113* | 4 | 14.703 | 11.542 | 380.133 | 251.875 | 41.632 | 54.777 | 4.139 | 503.75 | 83.264 |
| ДСТУ 8938 seamless tube 121x4.5 | 121 | 112* | 4.5 | 16.47 | 12.929 | 380.133 | 279.832 | 46.253 | 61.106 | 4.122 | 559.664 | 92.507 |
| ДСТУ 8938 seamless tube 121x5 | 121 | 111* | 5 | 18.221 | 14.304 | 380.133 | 307.051 | 50.752 | 67.322 | 4.105 | 614.101 | 101.504 |
| ДСТУ 8938 seamless tube 121x5.5 | 121 | 110* | 5.5 | 19.957 | 15.666 | 380.133 | 333.543 | 55.131 | 73.427 | 4.088 | 667.087 | 110.262 |
| ДСТУ 8938 seamless tube 121x6 | 121 | 109* | 6 | 21.677 | 17.016 | 380.133 | 359.323 | 59.392 | 79.422 | 4.071 | 718.646 | 118.785 |
| ДСТУ 8938 seamless tube 121x6.5 | 121 | 108* | 6.5 | 23.381 | 18.354 | 380.133 | 384.403 | 63.538 | 85.308 | 4.055 | 768.806 | 127.075 |
| ДСТУ 8938 seamless tube 121x7 | 121 | 107* | 7 | 25.07 | 19.68 | 380.133 | 408.796 | 67.57 | 91.086 | 4.038 | 817.592 | 135.139 |
| ДСТУ 8938 seamless tube 121x7.5 | 121 | 106* | 7.5 | 26.743 | 20.993 | 380.133 | 432.515 | 71.49 | 96.758 | 4.022 | 865.03 | 142.98 |
| ДСТУ 8938 seamless tube 121x8 | 121 | 105* | 8 | 28.4 | 22.294 | 380.133 | 455.571 | 75.301 | 102.323 | 4.005 | 911.143 | 150.602 |
| ДСТУ 8938 seamless tube 121x8.5 | 121 | 104* | 8.5 | 30.041 | 23.583 | 380.133 | 477.979 | 79.005 | 107.783 | 3.989 | 955.957 | 158.009 |
| ДСТУ 8938 seamless tube 121x9 | 121 | 103* | 9 | 31.667 | 24.859 | 380.133 | 499.749 | 82.603 | 113.139 | 3.973 | 999.498 | 165.206 |
| ДСТУ 8938 seamless tube 121x9.5 | 121 | 102* | 9.5 | 33.277 | 26.123 | 380.133 | 520.894 | 86.098 | 118.392 | 3.956 | 1041.788 | 172.196 |
| ДСТУ 8938 seamless tube 121x10 | 121 | 101* | 10 | 34.872 | 27.374 | 380.133 | 541.426 | 89.492 | 123.543 | 3.94 | 1082.853 | 178.984 |
| ДСТУ 8938 seamless tube 121x11 | 121 | 99* | 11 | 38.013 | 29.84 | 380.133 | 580.7 | 95.984 | 133.544 | 3.908 | 1161.4 | 191.967 |
| ДСТУ 8938 seamless tube 121x12 | 121 | 97* | 12 | 41.092 | 32.257 | 380.133 | 617.665 | 102.093 | 143.148 | 3.877 | 1235.329 | 204.187 |
| ДСТУ 8938 seamless tube 121x13 | 121 | 95* | 13 | 44.108 | 34.625 | 380.133 | 652.412 | 107.837 | 152.364 | 3.846 | 1304.824 | 215.673 |
| ДСТУ 8938 seamless tube 121x14 | 121 | 93* | 14 | 47.061 | 36.943 | 380.133 | 685.033 | 113.229 | 161.201 | 3.815 | 1370.065 | 226.457 |
| ДСТУ 8938 seamless tube 121x15 | 121 | 91* | 15 | 49.951 | 39.212 | 380.133 | 715.615 | 118.283 | 169.665 | 3.785 | 1431.23 | 236.567 |
| ДСТУ 8938 seamless tube 121x16 | 121 | 89* | 16 | 52.779 | 41.431 | 380.133 | 744.246 | 123.016 | 177.765 | 3.755 | 1488.493 | 246.032 |
| ДСТУ 8938 seamless tube 121x17 | 121 | 87* | 17 | 55.543 | 43.602 | 380.133 | 771.011 | 127.44 | 185.51 | 3.726 | 1542.022 | 254.88 |
| ДСТУ 8938 seamless tube 121x18 | 121 | 85* | 18 | 58.245 | 45.722 | 380.133 | 795.992 | 131.569 | 192.906 | 3.697 | 1591.985 | 263.138 |
| ДСТУ 8938 seamless tube 121x19 | 121 | 83* | 19 | 60.884 | 47.794 | 380.133 | 819.271 | 135.417 | 199.962 | 3.668 | 1638.542 | 270.833 |
| ДСТУ 8938 seamless tube 121x20 | 121 | 81* | 20 | 63.46 | 49.816 | 380.133 | 840.927 | 138.996 | 206.687 | 3.64 | 1681.853 | 277.992 |
| ДСТУ 8938 seamless tube 121x22 | 121 | 77* | 22 | 68.424 | 53.713 | 380.133 | 879.675 | 145.401 | 219.171 | 3.586 | 1759.349 | 290.802 |
| ДСТУ 8938 seamless tube 121x24 | 121 | 73* | 24 | 73.136 | 57.412 | 380.133 | 912.832 | 150.881 | 230.424 | 3.533 | 1825.664 | 301.763 |
| ДСТУ 8938 seamless tube 121x25 | 121 | 71* | 25 | 75.398 | 59.188 | 380.133 | 927.492 | 153.305 | 235.608 | 3.507 | 1854.985 | 306.609 |
| ДСТУ 8938 seamless tube 121x26 | 121 | 69* | 26 | 77.597 | 60.914 | 380.133 | 940.965 | 155.531 | 240.509 | 3.482 | 1881.929 | 311.063 |
| ДСТУ 8938 seamless tube 121x28 | 121 | 65* | 28 | 81.807 | 64.219 | 380.133 | 964.608 | 159.439 | 249.489 | 3.434 | 1929.215 | 318.879 |
| ДСТУ 8938 seamless tube 127x4 | 127 | 119* | 4 | 15.457 | 12.133 | 398.982 | 292.613 | 46.081 | 60.537 | 4.351 | 585.227 | 92.162 |
| ДСТУ 8938 seamless tube 127x4.5 | 127 | 118* | 4.5 | 17.318 | 13.595 | 398.982 | 325.287 | 51.226 | 67.559 | 4.334 | 650.573 | 102.453 |
| ДСТУ 8938 seamless tube 127x5 | 127 | 117* | 5 | 19.164 | 15.044 | 398.982 | 357.14 | 56.242 | 74.462 | 4.317 | 714.28 | 112.485 |
| ДСТУ 8938 seamless tube 127x5.5 | 127 | 116* | 5.5 | 20.994 | 16.48 | 398.982 | 388.187 | 61.132 | 81.248 | 4.3 | 776.373 | 122.263 |
| ДСТУ 8938 seamless tube 127x6 | 127 | 115* | 6 | 22.808 | 17.904 | 398.982 | 418.441 | 65.896 | 87.918 | 4.283 | 836.881 | 131.792 |
| ДСТУ 8938 seamless tube 127x6.5 | 127 | 114* | 6.5 | 24.607 | 19.316 | 398.982 | 447.916 | 70.538 | 94.473 | 4.267 | 895.831 | 141.076 |
| ДСТУ 8938 seamless tube 127x7 | 127 | 113* | 7 | 26.389 | 20.716 | 398.982 | 476.625 | 75.059 | 100.914 | 4.25 | 953.25 | 150.118 |
| ДСТУ 8938 seamless tube 127x7.5 | 127 | 112* | 7.5 | 28.157 | 22.103 | 398.982 | 504.583 | 79.462 | 107.243 | 4.233 | 1009.165 | 158.924 |
| ДСТУ 8938 seamless tube 127x8 | 127 | 111* | 8 | 29.908 | 23.478 | 398.982 | 531.801 | 83.748 | 113.459 | 4.217 | 1063.602 | 167.496 |
| ДСТУ 8938 seamless tube 127x8.5 | 127 | 110* | 8.5 | 31.644 | 24.84 | 398.982 | 558.294 | 87.92 | 119.564 | 4.2 | 1116.587 | 175.841 |
| ДСТУ 8938 seamless tube 127x9 | 127 | 109* | 9 | 33.364 | 26.191 | 398.982 | 584.074 | 91.98 | 125.559 | 4.184 | 1168.147 | 183.96 |
| ДСТУ 8938 seamless tube 127x9.5 | 127 | 108* | 9.5 | 35.068 | 27.528 | 398.982 | 609.154 | 95.93 | 131.445 | 4.168 | 1218.307 | 191.859 |
| ДСТУ 8938 seamless tube 127x10 | 127 | 107* | 10 | 36.757 | 28.854 | 398.982 | 633.547 | 99.771 | 137.223 | 4.152 | 1267.093 | 199.542 |
| ДСТУ 8938 seamless tube 127x11 | 127 | 105* | 11 | 40.087 | 31.468 | 398.982 | 680.322 | 107.137 | 148.46 | 4.12 | 1360.644 | 214.275 |
| ДСТУ 8938 seamless tube 127x12 | 127 | 103* | 12 | 43.354 | 34.033 | 398.982 | 724.499 | 114.094 | 159.276 | 4.088 | 1448.998 | 228.189 |
| ДСТУ 8938 seamless tube 127x13 | 127 | 101* | 13 | 46.558 | 36.548 | 398.982 | 766.177 | 120.658 | 169.68 | 4.057 | 1532.353 | 241.316 |
| ДСТУ 8938 seamless tube 127x14 | 127 | 99* | 14 | 49.7 | 39.014 | 398.982 | 805.451 | 126.843 | 179.681 | 4.026 | 1610.901 | 253.685 |
| ДСТУ 8938 seamless tube 127x15 | 127 | 97* | 15 | 52.779 | 41.431 | 398.982 | 842.415 | 132.664 | 189.285 | 3.995 | 1684.83 | 265.328 |
| ДСТУ 8938 seamless tube 127x16 | 127 | 95* | 16 | 55.795 | 43.799 | 398.982 | 877.162 | 138.136 | 198.501 | 3.965 | 1754.324 | 276.272 |
| ДСТУ 8938 seamless tube 127x17 | 127 | 93* | 17 | 58.748 | 46.117 | 398.982 | 909.783 | 143.273 | 207.338 | 3.935 | 1819.566 | 286.546 |
| ДСТУ 8938 seamless tube 127x18 | 127 | 91* | 18 | 61.638 | 48.386 | 398.982 | 940.365 | 148.089 | 215.802 | 3.906 | 1880.731 | 296.178 |
| ДСТУ 8938 seamless tube 127x19 | 127 | 89* | 19 | 64.465 | 50.605 | 398.982 | 968.997 | 152.598 | 223.902 | 3.877 | 1937.994 | 305.196 |
| ДСТУ 8938 seamless tube 127x20 | 127 | 87* | 20 | 67.23 | 52.776 | 398.982 | 995.762 | 156.813 | 231.647 | 3.849 | 1991.523 | 313.626 |
| ДСТУ 8938 seamless tube 127x22 | 127 | 83* | 22 | 72.571 | 56.968 | 398.982 | 1044.022 | 164.413 | 246.099 | 3.793 | 2088.043 | 328.826 |
| ДСТУ 8938 seamless tube 127x24 | 127 | 79* | 24 | 77.66 | 60.963 | 398.982 | 1085.786 | 170.99 | 259.224 | 3.739 | 2171.573 | 341.98 |
| ДСТУ 8938 seamless tube 127x25 | 127 | 77* | 25 | 80.111 | 62.887 | 398.982 | 1104.425 | 173.925 | 265.308 | 3.713 | 2208.85 | 347.85 |
| ДСТУ 8938 seamless tube 127x26 | 127 | 75* | 26 | 82.498 | 64.761 | 398.982 | 1121.666 | 176.64 | 271.085 | 3.687 | 2243.333 | 353.281 |
| ДСТУ 8938 seamless tube 127x28 | 127 | 71* | 28 | 87.085 | 68.362 | 398.982 | 1152.243 | 181.456 | 281.745 | 3.637 | 2304.485 | 362.911 |
| ДСТУ 8938 seamless tube 127x30 | 127 | 67* | 30 | 91.42 | 71.765 | 398.982 | 1178.065 | 185.522 | 291.27 | 3.59 | 2356.131 | 371.044 |
| ДСТУ 8938 seamless tube 133x4 | 133 | 125* | 4 | 16.211 | 12.725 | 417.832 | 337.525 | 50.756 | 66.585 | 4.563 | 675.051 | 101.511 |
| ДСТУ 8938 seamless tube 133x4.5 | 133 | 124* | 4.5 | 18.166 | 14.261 | 417.832 | 375.417 | 56.454 | 74.336 | 4.546 | 750.834 | 112.907 |
| ДСТУ 8938 seamless tube 133x5 | 133 | 123* | 5 | 20.106 | 15.783 | 417.832 | 412.403 | 62.016 | 81.962 | 4.529 | 824.806 | 124.031 |
| ДСТУ 8938 seamless tube 133x5.5 | 133 | 122* | 5.5 | 22.03 | 17.294 | 417.832 | 448.498 | 67.443 | 89.465 | 4.512 | 896.996 | 134.887 |
| ДСТУ 8938 seamless tube 133x6 | 133 | 121* | 6 | 23.939 | 18.792 | 417.832 | 483.716 | 72.739 | 96.846 | 4.495 | 967.432 | 145.479 |
| ДСТУ 8938 seamless tube 133x6.5 | 133 | 120* | 6.5 | 25.832 | 20.278 | 417.832 | 518.072 | 77.906 | 104.106 | 4.478 | 1036.144 | 155.811 |
| ДСТУ 8938 seamless tube 133x7 | 133 | 119* | 7 | 27.709 | 21.751 | 417.832 | 551.579 | 82.944 | 111.246 | 4.462 | 1103.158 | 165.888 |
| ДСТУ 8938 seamless tube 133x7.5 | 133 | 118* | 7.5 | 29.57 | 23.213 | 417.832 | 584.253 | 87.858 | 118.268 | 4.445 | 1168.505 | 175.715 |
| ДСТУ 8938 seamless tube 133x8 | 133 | 117* | 8 | 31.416 | 24.662 | 417.832 | 616.106 | 92.647 | 125.171 | 4.428 | 1232.211 | 185.295 |
| ДСТУ 8938 seamless tube 133x8.5 | 133 | 116* | 8.5 | 33.246 | 26.098 | 417.832 | 647.152 | 97.316 | 131.957 | 4.412 | 1294.305 | 194.632 |
| ДСТУ 8938 seamless tube 133x9 | 133 | 115* | 9 | 35.06 | 27.522 | 417.832 | 677.406 | 101.866 | 138.627 | 4.396 | 1354.813 | 203.731 |
| ДСТУ 8938 seamless tube 133x9.5 | 133 | 114* | 9.5 | 36.859 | 28.934 | 417.832 | 706.881 | 106.298 | 145.182 | 4.379 | 1413.763 | 212.596 |
| ДСТУ 8938 seamless tube 133x10 | 133 | 113* | 10 | 38.642 | 30.334 | 417.832 | 735.591 | 110.615 | 151.623 | 4.363 | 1471.182 | 221.23 |
| ДСТУ 8938 seamless tube 133x11 | 133 | 111* | 11 | 42.16 | 33.096 | 417.832 | 790.767 | 118.912 | 164.168 | 4.331 | 1581.534 | 237.825 |
| ДСТУ 8938 seamless tube 133x12 | 133 | 109* | 12 | 45.616 | 35.809 | 417.832 | 843.039 | 126.773 | 176.268 | 4.299 | 1686.079 | 253.546 |
| ДСТУ 8938 seamless tube 133x13 | 133 | 107* | 13 | 49.009 | 38.472 | 417.832 | 892.512 | 134.212 | 187.932 | 4.267 | 1785.025 | 268.425 |
| ДСТУ 8938 seamless tube 133x14 | 133 | 105* | 14 | 52.339 | 41.086 | 417.832 | 939.288 | 141.246 | 199.169 | 4.236 | 1878.575 | 282.493 |
| ДСТУ 8938 seamless tube 133x15 | 133 | 103* | 15 | 55.606 | 43.651 | 417.832 | 983.465 | 147.889 | 209.985 | 4.206 | 1966.93 | 295.779 |
| ДСТУ 8938 seamless tube 133x16 | 133 | 101* | 16 | 58.811 | 46.166 | 417.832 | 1025.143 | 154.157 | 220.389 | 4.175 | 2050.285 | 308.314 |
| ДСТУ 8938 seamless tube 133x17 | 133 | 99* | 17 | 61.952 | 48.632 | 417.832 | 1064.416 | 160.063 | 230.39 | 4.145 | 2128.833 | 320.125 |
| ДСТУ 8938 seamless tube 133x18 | 133 | 97* | 18 | 65.031 | 51.049 | 417.832 | 1101.381 | 165.621 | 239.994 | 4.115 | 2202.761 | 331.242 |
| ДСТУ 8938 seamless tube 133x19 | 133 | 95* | 19 | 68.047 | 53.417 | 417.832 | 1136.128 | 170.846 | 249.21 | 4.086 | 2272.256 | 341.693 |
| ДСТУ 8938 seamless tube 133x20 | 133 | 93* | 20 | 71 | 55.735 | 417.832 | 1168.749 | 175.752 | 258.047 | 4.057 | 2337.497 | 351.503 |
| ДСТУ 8938 seamless tube 133x22 | 133 | 89* | 22 | 76.718 | 60.223 | 417.832 | 1227.963 | 184.656 | 274.611 | 4.001 | 2455.925 | 369.312 |
| ДСТУ 8938 seamless tube 133x24 | 133 | 85* | 24 | 82.184 | 64.514 | 417.832 | 1279.709 | 192.437 | 289.752 | 3.946 | 2559.417 | 384.875 |
| ДСТУ 8938 seamless tube 133x25 | 133 | 83* | 25 | 84.823 | 66.586 | 417.832 | 1302.987 | 195.938 | 296.808 | 3.919 | 2605.975 | 391.876 |
| ДСТУ 8938 seamless tube 133x26 | 133 | 81* | 26 | 87.399 | 68.608 | 417.832 | 1324.643 | 199.194 | 303.533 | 3.893 | 2649.285 | 398.389 |
| ДСТУ 8938 seamless tube 133x28 | 133 | 77* | 28 | 92.363 | 72.505 | 417.832 | 1363.391 | 205.021 | 316.017 | 3.842 | 2726.781 | 410.042 |
| ДСТУ 8938 seamless tube 133x30 | 133 | 73* | 30 | 97.075 | 76.204 | 417.832 | 1396.548 | 210.007 | 327.27 | 3.793 | 2793.097 | 420.015 |
| ДСТУ 8938 seamless tube 133x32 | 133 | 69* | 32 | 101.536 | 79.706 | 417.832 | 1424.681 | 214.238 | 337.355 | 3.746 | 2849.362 | 428.475 |
| ДСТУ 8938 seamless tube 140x4.5 | 140 | 131* | 4.5 | 19.156 | 15.037 | 439.823 | 440.118 | 62.874 | 82.652 | 4.793 | 880.236 | 125.748 |
| ДСТУ 8938 seamless tube 140x5 | 140 | 130* | 5 | 21.206 | 16.647 | 439.823 | 483.756 | 69.108 | 91.167 | 4.776 | 967.512 | 138.216 |
| ДСТУ 8938 seamless tube 140x5.5 | 140 | 129* | 5.5 | 23.24 | 18.243 | 439.823 | 526.399 | 75.2 | 99.552 | 4.759 | 1052.798 | 150.4 |
| ДСТУ 8938 seamless tube 140x6 | 140 | 128* | 6 | 25.258 | 19.828 | 439.823 | 568.062 | 81.152 | 107.808 | 4.742 | 1136.123 | 162.303 |
| ДСТУ 8938 seamless tube 140x6.5 | 140 | 127* | 6.5 | 27.261 | 21.4 | 439.823 | 608.759 | 86.966 | 115.936 | 4.726 | 1217.518 | 173.931 |
| ДСТУ 8938 seamless tube 140x7 | 140 | 126* | 7 | 29.248 | 22.96 | 439.823 | 648.506 | 92.644 | 123.937 | 4.709 | 1297.013 | 185.288 |
| ДСТУ 8938 seamless tube 140x7.5 | 140 | 125* | 7.5 | 31.22 | 24.507 | 439.823 | 687.318 | 98.188 | 131.813 | 4.692 | 1374.637 | 196.377 |
| ДСТУ 8938 seamless tube 140x8 | 140 | 124* | 8 | 33.175 | 26.043 | 439.823 | 725.21 | 103.601 | 139.563 | 4.675 | 1450.421 | 207.203 |
| ДСТУ 8938 seamless tube 140x8.5 | 140 | 123* | 8.5 | 35.115 | 27.565 | 439.823 | 762.196 | 108.885 | 147.189 | 4.659 | 1524.393 | 217.77 |
| ДСТУ 8938 seamless tube 140x9 | 140 | 122* | 9 | 37.039 | 29.076 | 439.823 | 798.291 | 114.042 | 154.692 | 4.642 | 1596.582 | 228.083 |
| ДСТУ 8938 seamless tube 140x9.5 | 140 | 121* | 9.5 | 38.948 | 30.574 | 439.823 | 833.509 | 119.073 | 162.073 | 4.626 | 1667.019 | 238.146 |
| ДСТУ 8938 seamless tube 140x10 | 140 | 120* | 10 | 40.841 | 32.06 | 439.823 | 867.865 | 123.981 | 169.333 | 4.61 | 1735.73 | 247.961 |
| ДСТУ 8938 seamless tube 140x11 | 140 | 118* | 11 | 44.579 | 34.995 | 439.823 | 934.046 | 133.435 | 183.495 | 4.577 | 1868.091 | 266.87 |
* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.