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 325x7.5 | 325 | 310* | 7.5 | 74.809 | 58.725 | 1021.018 | 9431.801 | 580.418 | 756.188 | 11.228 | 18863.601 | 1160.837 |
| ДСТУ 8938 seamless tube 325x8 | 325 | 309* | 8 | 79.671 | 62.542 | 1021.018 | 10013.921 | 616.241 | 804.083 | 11.211 | 20027.842 | 1232.483 |
| ДСТУ 8938 seamless tube 325x8.5 | 325 | 308* | 8.5 | 84.517 | 66.346 | 1021.018 | 10590.417 | 651.718 | 851.669 | 11.194 | 21180.835 | 1303.436 |
| ДСТУ 8938 seamless tube 325x9 | 325 | 307* | 9 | 89.347 | 70.137 | 1021.018 | 11161.326 | 686.851 | 898.947 | 11.177 | 22322.652 | 1373.702 |
| ДСТУ 8938 seamless tube 325x9.5 | 325 | 306* | 9.5 | 94.161 | 73.917 | 1021.018 | 11726.682 | 721.642 | 945.918 | 11.16 | 23453.365 | 1443.284 |
| ДСТУ 8938 seamless tube 325x10 | 325 | 305* | 10 | 98.96 | 77.684 | 1021.018 | 12286.523 | 756.094 | 992.583 | 11.143 | 24573.047 | 1512.187 |
| ДСТУ 8938 seamless tube 325x11 | 325 | 303* | 11 | 108.511 | 85.181 | 1021.018 | 13389.802 | 823.988 | 1085 | 11.108 | 26779.605 | 1647.976 |
| ДСТУ 8938 seamless tube 325x12 | 325 | 301* | 12 | 117.998 | 92.629 | 1021.018 | 14471.449 | 890.551 | 1176.204 | 11.074 | 28942.898 | 1781.101 |
| ДСТУ 8938 seamless tube 325x13 | 325 | 299* | 13 | 127.423 | 100.027 | 1021.018 | 15531.749 | 955.8 | 1266.204 | 11.04 | 31063.497 | 1911.6 |
| ДСТУ 8938 seamless tube 325x14 | 325 | 297* | 14 | 136.785 | 107.376 | 1021.018 | 16570.983 | 1019.753 | 1355.009 | 11.007 | 33141.966 | 2039.506 |
| ДСТУ 8938 seamless tube 325x15 | 325 | 295* | 15 | 146.084 | 114.676 | 1021.018 | 17589.434 | 1082.427 | 1442.625 | 10.973 | 35178.867 | 2164.853 |
| ДСТУ 8938 seamless tube 325x16 | 325 | 293* | 16 | 155.32 | 121.926 | 1021.018 | 18587.379 | 1143.839 | 1529.061 | 10.939 | 37174.759 | 2287.677 |
| ДСТУ 8938 seamless tube 325x17 | 325 | 291* | 17 | 164.494 | 129.128 | 1021.018 | 19565.097 | 1204.006 | 1614.326 | 10.906 | 39130.194 | 2408.012 |
| ДСТУ 8938 seamless tube 325x18 | 325 | 289* | 18 | 173.604 | 136.279 | 1021.018 | 20522.862 | 1262.945 | 1698.426 | 10.873 | 41045.725 | 2525.891 |
| ДСТУ 8938 seamless tube 325x19 | 325 | 287* | 19 | 182.652 | 143.382 | 1021.018 | 21460.948 | 1320.674 | 1781.37 | 10.84 | 42921.896 | 2641.347 |
| ДСТУ 8938 seamless tube 325x20 | 325 | 285* | 20 | 191.637 | 150.435 | 1021.018 | 22379.626 | 1377.208 | 1863.167 | 10.807 | 44759.252 | 2754.416 |
| ДСТУ 8938 seamless tube 325x22 | 325 | 281* | 22 | 209.419 | 164.394 | 1021.018 | 24159.835 | 1486.759 | 2023.347 | 10.741 | 48319.669 | 2973.518 |
| ДСТУ 8938 seamless tube 325x24 | 325 | 277* | 24 | 226.949 | 178.155 | 1021.018 | 25865.622 | 1591.731 | 2179.032 | 10.676 | 51731.243 | 3183.461 |
| ДСТУ 8938 seamless tube 325x25 | 325 | 275* | 25 | 235.619 | 184.961 | 1021.018 | 26691.266 | 1642.539 | 2255.208 | 10.643 | 53382.531 | 3285.079 |
| ДСТУ 8938 seamless tube 325x26 | 325 | 273* | 26 | 244.227 | 191.719 | 1021.018 | 27499.091 | 1692.252 | 2330.285 | 10.611 | 54998.182 | 3384.503 |
| ДСТУ 8938 seamless tube 325x28 | 325 | 269* | 28 | 261.255 | 205.085 | 1021.018 | 29062.316 | 1788.45 | 2477.169 | 10.547 | 58124.631 | 3576.9 |
| ДСТУ 8938 seamless tube 325x30 | 325 | 265* | 30 | 278.031 | 218.254 | 1021.018 | 30557.339 | 1880.452 | 2619.75 | 10.484 | 61114.678 | 3760.903 |
| ДСТУ 8938 seamless tube 325x32 | 325 | 261* | 32 | 294.556 | 231.226 | 1021.018 | 31986.175 | 1968.38 | 2758.091 | 10.421 | 63972.349 | 3936.76 |
| ДСТУ 8938 seamless tube 325x34 | 325 | 257* | 34 | 310.829 | 244.001 | 1021.018 | 33350.805 | 2052.357 | 2892.255 | 10.358 | 66701.61 | 4104.714 |
| ДСТУ 8938 seamless tube 325x35 | 325 | 255* | 35 | 318.872 | 250.314 | 1021.018 | 34009.655 | 2092.902 | 2957.792 | 10.327 | 68019.31 | 4185.804 |
| ДСТУ 8938 seamless tube 325x36 | 325 | 253* | 36 | 326.851 | 256.578 | 1021.018 | 34653.183 | 2132.504 | 3022.308 | 10.297 | 69306.367 | 4265.007 |
| ДСТУ 8938 seamless tube 325x38 | 325 | 249* | 38 | 342.622 | 268.958 | 1021.018 | 35895.232 | 2208.937 | 3148.313 | 10.236 | 71790.464 | 4417.875 |
| ДСТУ 8938 seamless tube 325x40 | 325 | 245* | 40 | 358.142 | 281.141 | 1021.018 | 37078.844 | 2281.775 | 3270.333 | 10.175 | 74157.687 | 4563.55 |
| ДСТУ 8938 seamless tube 325x42 | 325 | 241* | 42 | 373.41 | 293.127 | 1021.018 | 38205.881 | 2351.131 | 3388.434 | 10.115 | 76411.761 | 4702.262 |
| ДСТУ 8938 seamless tube 325x45 | 325 | 235* | 45 | 395.841 | 310.735 | 1021.018 | 39794.358 | 2448.884 | 3558.375 | 10.027 | 79588.716 | 4897.767 |
| ДСТУ 8938 seamless tube 325x48 | 325 | 229* | 48 | 417.706 | 327.899 | 1021.018 | 41265.714 | 2539.429 | 3719.856 | 9.939 | 82531.427 | 5078.857 |
| ДСТУ 8938 seamless tube 325x50 | 325 | 225* | 50 | 431.969 | 339.096 | 1021.018 | 42184.472 | 2595.967 | 3822.917 | 9.882 | 84368.943 | 5191.935 |
| ДСТУ 8938 seamless tube 325x56 | 325 | 213* | 56 | 473.25 | 371.501 | 1021.018 | 44661.149 | 2748.378 | 4110.755 | 9.714 | 89322.297 | 5496.757 |
| ДСТУ 8938 seamless tube 325x60 | 325 | 205* | 60 | 499.513 | 392.118 | 1021.018 | 46095.705 | 2836.659 | 4285.5 | 9.606 | 92191.411 | 5673.318 |
| ДСТУ 8938 seamless tube 325x63 | 325 | 199* | 63 | 518.551 | 407.063 | 1021.018 | 47066.955 | 2896.428 | 4407.921 | 9.527 | 94133.911 | 5792.856 |
| ДСТУ 8938 seamless tube 325x65 | 325 | 195* | 65 | 530.929 | 416.779 | 1021.018 | 47667.484 | 2933.384 | 4485.542 | 9.475 | 95334.967 | 5866.767 |
| ДСТУ 8938 seamless tube 325x70 | 325 | 185* | 70 | 560.774 | 440.208 | 1021.018 | 49015.178 | 3016.319 | 4666.083 | 9.349 | 98030.355 | 6032.637 |
| ДСТУ 8938 seamless tube 325x75 | 325 | 175* | 75 | 589.049 | 462.403 | 1021.018 | 50161.172 | 3086.841 | 4828.125 | 9.228 | 100322.344 | 6173.683 |
| ДСТУ 8938 seamless tube 351x8 | 351 | 335* | 8 | 86.205 | 67.671 | 1102.699 | 12684.356 | 722.755 | 941.363 | 12.13 | 25368.712 | 1445.511 |
| ДСТУ 8938 seamless tube 351x8.5 | 351 | 334* | 8.5 | 91.46 | 71.796 | 1102.699 | 13419.241 | 764.629 | 997.308 | 12.113 | 26838.481 | 1529.258 |
| ДСТУ 8938 seamless tube 351x9 | 351 | 333* | 9 | 96.698 | 75.908 | 1102.699 | 14147.554 | 806.128 | 1052.919 | 12.096 | 28295.108 | 1612.257 |
| ДСТУ 8938 seamless tube 351x9.5 | 351 | 332* | 9.5 | 101.921 | 80.008 | 1102.699 | 14869.336 | 847.256 | 1108.197 | 12.079 | 29738.672 | 1694.511 |
| ДСТУ 8938 seamless tube 351x10 | 351 | 331* | 10 | 107.128 | 84.096 | 1102.699 | 15584.625 | 888.013 | 1163.143 | 12.061 | 31169.249 | 1776.026 |
| ДСТУ 8938 seamless tube 351x11 | 351 | 329* | 11 | 117.496 | 92.234 | 1102.699 | 16995.88 | 968.426 | 1272.044 | 12.027 | 33991.761 | 1936.852 |
| ДСТУ 8938 seamless tube 351x12 | 351 | 327* | 12 | 127.8 | 100.323 | 1102.699 | 18381.632 | 1047.386 | 1379.628 | 11.993 | 36763.264 | 2094.773 |
| ДСТУ 8938 seamless tube 351x13 | 351 | 325* | 13 | 138.042 | 108.363 | 1102.699 | 19742.189 | 1124.911 | 1485.904 | 11.959 | 39484.379 | 2249.822 |
| ДСТУ 8938 seamless tube 351x14 | 351 | 323* | 14 | 148.22 | 116.353 | 1102.699 | 21077.859 | 1201.018 | 1590.881 | 11.925 | 42155.718 | 2402.035 |
| ДСТУ 8938 seamless tube 351x15 | 351 | 321* | 15 | 158.336 | 124.294 | 1102.699 | 22388.946 | 1275.723 | 1694.565 | 11.891 | 44777.893 | 2551.447 |
| ДСТУ 8938 seamless tube 351x16 | 351 | 319* | 16 | 168.389 | 132.186 | 1102.699 | 23675.755 | 1349.046 | 1796.965 | 11.858 | 47351.511 | 2698.092 |
| ДСТУ 8938 seamless tube 351x17 | 351 | 317* | 17 | 178.38 | 140.028 | 1102.699 | 24938.587 | 1421.002 | 1898.09 | 11.824 | 49877.175 | 2842.004 |
| ДСТУ 8938 seamless tube 351x18 | 351 | 315* | 18 | 188.307 | 147.821 | 1102.699 | 26177.742 | 1491.609 | 1997.946 | 11.791 | 52355.484 | 2983.218 |
| ДСТУ 8938 seamless tube 351x19 | 351 | 313* | 19 | 198.172 | 155.565 | 1102.699 | 27393.517 | 1560.884 | 2096.542 | 11.757 | 54787.034 | 3121.768 |
| ДСТУ 8938 seamless tube 351x20 | 351 | 311* | 20 | 207.973 | 163.259 | 1102.699 | 28586.208 | 1628.844 | 2193.887 | 11.724 | 57172.417 | 3257.688 |
| ДСТУ 8938 seamless tube 351x22 | 351 | 307* | 22 | 227.388 | 178.5 | 1102.699 | 30903.515 | 1760.884 | 2384.851 | 11.658 | 61807.03 | 3521.768 |
| ДСТУ 8938 seamless tube 351x24 | 351 | 303* | 24 | 246.552 | 193.543 | 1102.699 | 33131.992 | 1887.863 | 2570.904 | 11.592 | 66263.983 | 3775.726 |
| ДСТУ 8938 seamless tube 351x25 | 351 | 301* | 25 | 256.04 | 200.991 | 1102.699 | 34213.638 | 1949.495 | 2662.108 | 11.56 | 68427.277 | 3898.99 |
| ДСТУ 8938 seamless tube 351x26 | 351 | 299* | 26 | 265.465 | 208.39 | 1102.699 | 35273.938 | 2009.911 | 2752.109 | 11.527 | 70547.876 | 4019.822 |
| ДСТУ 8938 seamless tube 351x28 | 351 | 295* | 28 | 284.126 | 223.039 | 1102.699 | 37331.623 | 2127.158 | 2928.529 | 11.463 | 74663.246 | 4254.316 |
| ДСТУ 8938 seamless tube 351x30 | 351 | 291* | 30 | 302.535 | 237.49 | 1102.699 | 39307.286 | 2239.731 | 3100.23 | 11.399 | 78614.573 | 4479.463 |
| ДСТУ 8938 seamless tube 351x32 | 351 | 287* | 32 | 320.694 | 251.745 | 1102.699 | 41203.137 | 2347.757 | 3267.275 | 11.335 | 82406.275 | 4695.514 |
| ДСТУ 8938 seamless tube 351x34 | 351 | 283* | 34 | 338.601 | 265.802 | 1102.699 | 43021.355 | 2451.359 | 3429.727 | 11.272 | 86042.71 | 4902.719 |
| ДСТУ 8938 seamless tube 351x35 | 351 | 281* | 35 | 347.46 | 272.756 | 1102.699 | 43902.024 | 2501.54 | 3509.252 | 11.241 | 87804.048 | 5003.08 |
| ДСТУ 8938 seamless tube 351x36 | 351 | 279* | 36 | 356.257 | 279.661 | 1102.699 | 44764.088 | 2550.66 | 3587.652 | 11.209 | 89528.176 | 5101.321 |
| ДСТУ 8938 seamless tube 351x38 | 351 | 275* | 38 | 373.661 | 293.324 | 1102.699 | 46433.455 | 2645.781 | 3741.113 | 11.147 | 92866.91 | 5291.562 |
| ДСТУ 8938 seamless tube 351x40 | 351 | 271* | 40 | 390.814 | 306.789 | 1102.699 | 48031.545 | 2736.84 | 3890.173 | 11.086 | 96063.089 | 5473.68 |
| ДСТУ 8938 seamless tube 351x42 | 351 | 267* | 42 | 407.716 | 320.057 | 1102.699 | 49560.415 | 2823.955 | 4034.898 | 11.025 | 99120.83 | 5647.911 |
| ДСТУ 8938 seamless tube 351x45 | 351 | 261* | 45 | 432.597 | 339.589 | 1102.699 | 51728.364 | 2947.485 | 4243.995 | 10.935 | 103456.728 | 5894.97 |
| ДСТУ 8938 seamless tube 351x48 | 351 | 255* | 48 | 456.913 | 358.677 | 1102.699 | 53751.844 | 3062.783 | 4443.696 | 10.846 | 107503.688 | 6125.566 |
| ДСТУ 8938 seamless tube 351x50 | 351 | 251* | 50 | 472.81 | 371.156 | 1102.699 | 55023.819 | 3135.26 | 4571.717 | 10.788 | 110047.638 | 6270.521 |
| ДСТУ 8938 seamless tube 351x56 | 351 | 239* | 56 | 518.991 | 407.408 | 1102.699 | 58490.946 | 3332.817 | 4931.939 | 10.616 | 116981.893 | 6665.635 |
| ДСТУ 8938 seamless tube 351x60 | 351 | 231* | 60 | 548.522 | 430.59 | 1102.699 | 60530.097 | 3449.008 | 5152.86 | 10.505 | 121060.194 | 6898.017 |
| ДСТУ 8938 seamless tube 351x63 | 351 | 225* | 63 | 570.011 | 447.458 | 1102.699 | 61926.661 | 3528.585 | 5308.821 | 10.423 | 123853.322 | 7057.169 |
| ДСТУ 8938 seamless tube 351x65 | 351 | 221* | 65 | 584.022 | 458.457 | 1102.699 | 62797.704 | 3578.217 | 5408.282 | 10.369 | 125595.407 | 7156.433 |
| ДСТУ 8938 seamless tube 351x70 | 351 | 211* | 70 | 617.951 | 485.092 | 1102.699 | 64777.515 | 3691.026 | 5641.603 | 10.238 | 129555.03 | 7382.053 |
| ДСТУ 8938 seamless tube 351x75 | 351 | 201* | 75 | 650.31 | 510.493 | 1102.699 | 66494.978 | 3788.888 | 5853.825 | 10.112 | 132989.955 | 7577.775 |
| ДСТУ 8938 seamless tube 356x8 | 356 | 340* | 8 | 87.462 | 68.658 | 1118.407 | 13246.985 | 744.213 | 969.003 | 12.307 | 26493.971 | 1488.425 |
| ДСТУ 8938 seamless tube 356x9 | 356 | 338* | 9 | 98.112 | 77.018 | 1118.407 | 14776.884 | 830.162 | 1083.924 | 12.272 | 29553.769 | 1660.324 |
| ДСТУ 8938 seamless tube 356x9.5 | 356 | 337* | 9.5 | 103.413 | 81.18 | 1118.407 | 15531.72 | 872.569 | 1140.877 | 12.255 | 31063.439 | 1745.137 |
| ДСТУ 8938 seamless tube 356x10 | 356 | 336* | 10 | 108.699 | 85.329 | 1118.407 | 16279.865 | 914.599 | 1197.493 | 12.238 | 32559.73 | 1829.198 |
| ДСТУ 8938 seamless tube 356x11 | 356 | 334* | 11 | 119.223 | 93.59 | 1118.407 | 17756.245 | 997.542 | 1309.719 | 12.204 | 35512.49 | 1995.084 |
| ДСТУ 8938 seamless tube 356x12 | 356 | 332* | 12 | 129.685 | 101.803 | 1118.407 | 19206.34 | 1079.008 | 1420.608 | 12.17 | 38412.681 | 2158.016 |
| ДСТУ 8938 seamless tube 356x13 | 356 | 330* | 13 | 140.084 | 109.966 | 1118.407 | 20630.464 | 1159.015 | 1530.169 | 12.136 | 41260.929 | 2318.03 |
| ДСТУ 8938 seamless tube 356x14 | 356 | 328* | 14 | 150.419 | 118.079 | 1118.407 | 22028.929 | 1237.58 | 1638.411 | 12.102 | 44057.859 | 2475.161 |
| ДСТУ 8938 seamless tube 356x15 | 356 | 326* | 15 | 160.692 | 126.144 | 1118.407 | 23402.045 | 1314.722 | 1745.34 | 12.068 | 46804.091 | 2629.443 |
| ДСТУ 8938 seamless tube 356x16 | 356 | 324* | 16 | 170.903 | 134.159 | 1118.407 | 24750.12 | 1390.456 | 1850.965 | 12.034 | 49500.241 | 2780.912 |
| ДСТУ 8938 seamless tube 356x17 | 356 | 322* | 17 | 181.05 | 142.124 | 1118.407 | 26073.461 | 1464.801 | 1955.295 | 12.001 | 52146.922 | 2929.602 |
| ДСТУ 8938 seamless tube 356x18 | 356 | 320* | 18 | 191.134 | 150.041 | 1118.407 | 27372.371 | 1537.774 | 2058.336 | 11.967 | 54744.743 | 3075.547 |
| ДСТУ 8938 seamless tube 356x19 | 356 | 318* | 19 | 201.156 | 157.908 | 1118.407 | 28647.154 | 1609.391 | 2160.097 | 11.934 | 57294.308 | 3218.781 |
| ДСТУ 8938 seamless tube 356x20 | 356 | 316* | 20 | 211.115 | 165.725 | 1118.407 | 29898.11 | 1679.669 | 2260.587 | 11.9 | 59796.22 | 3359.338 |
| ДСТУ 8938 seamless tube 356x22 | 356 | 312* | 22 | 230.844 | 181.213 | 1118.407 | 32329.734 | 1816.277 | 2457.781 | 11.834 | 64659.468 | 3632.554 |
| ДСТУ 8938 seamless tube 356x24 | 356 | 308* | 24 | 250.322 | 196.503 | 1118.407 | 34669.611 | 1947.731 | 2649.984 | 11.769 | 69339.222 | 3895.462 |
| ДСТУ 8938 seamless tube 356x25 | 356 | 306* | 25 | 259.967 | 204.074 | 1118.407 | 35805.876 | 2011.566 | 2744.233 | 11.736 | 71611.752 | 4023.132 |
| ДСТУ 8938 seamless tube 356x26 | 356 | 304* | 26 | 269.549 | 211.596 | 1118.407 | 36920.079 | 2074.162 | 2837.259 | 11.703 | 73840.157 | 4148.323 |
| ДСТУ 8938 seamless tube 356x28 | 356 | 300* | 28 | 288.524 | 226.491 | 1118.407 | 39083.443 | 2195.699 | 3019.669 | 11.639 | 78166.887 | 4391.398 |
| ДСТУ 8938 seamless tube 356x30 | 356 | 296* | 30 | 307.248 | 241.189 | 1118.407 | 41161.983 | 2312.471 | 3197.28 | 11.575 | 82323.965 | 4624.942 |
| ДСТУ 8938 seamless tube 356x32 | 356 | 292* | 32 | 325.72 | 255.69 | 1118.407 | 43157.943 | 2424.604 | 3370.155 | 11.511 | 86315.886 | 4849.207 |
| ДСТУ 8938 seamless tube 356x34 | 356 | 288* | 34 | 343.942 | 269.994 | 1118.407 | 45073.542 | 2532.221 | 3538.357 | 11.448 | 90147.084 | 5064.443 |
| ДСТУ 8938 seamless tube 356x35 | 356 | 286* | 35 | 352.958 | 277.072 | 1118.407 | 46001.89 | 2584.376 | 3620.727 | 11.416 | 92003.78 | 5168.752 |
| ДСТУ 8938 seamless tube 356x36 | 356 | 284* | 36 | 361.911 | 284.101 | 1118.407 | 46910.965 | 2635.447 | 3701.952 | 11.385 | 93821.93 | 5270.895 |
| ДСТУ 8938 seamless tube 356x38 | 356 | 280* | 38 | 379.63 | 298.01 | 1118.407 | 48672.37 | 2734.403 | 3861.003 | 11.323 | 97344.739 | 5468.806 |
* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.