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 159x16 | 159 | 127* | 16 | 71.88 | 56.426 | 499.513 | 1860.335 | 234.004 | 328.549 | 5.087 | 3720.67 | 468.009 |
| ДСТУ 8938 seamless tube 159x17 | 159 | 125* | 17 | 75.838 | 59.533 | 499.513 | 1938.894 | 243.886 | 344.426 | 5.056 | 3877.789 | 487.772 |
| ДСТУ 8938 seamless tube 159x18 | 159 | 123* | 18 | 79.734 | 62.591 | 499.513 | 2013.772 | 253.305 | 359.802 | 5.026 | 4027.545 | 506.609 |
| ДСТУ 8938 seamless tube 159x19 | 159 | 121* | 19 | 83.566 | 65.6 | 499.513 | 2085.085 | 262.275 | 374.686 | 4.995 | 4170.171 | 524.55 |
| ДСТУ 8938 seamless tube 159x20 | 159 | 119* | 20 | 87.336 | 68.559 | 499.513 | 2152.948 | 270.811 | 389.087 | 4.965 | 4305.897 | 541.622 |
| ДСТУ 8938 seamless tube 159x22 | 159 | 115* | 22 | 94.688 | 74.33 | 499.513 | 2278.776 | 286.638 | 416.467 | 4.906 | 4557.551 | 573.277 |
| ДСТУ 8938 seamless tube 159x24 | 159 | 111* | 24 | 101.788 | 79.903 | 499.513 | 2392.136 | 300.898 | 442.008 | 4.848 | 4784.272 | 601.795 |
| ДСТУ 8938 seamless tube 159x25 | 159 | 109* | 25 | 105.243 | 82.616 | 499.513 | 2444.408 | 307.473 | 454.108 | 4.819 | 4888.817 | 614.946 |
| ДСТУ 8938 seamless tube 159x26 | 159 | 107* | 26 | 108.636 | 85.279 | 499.513 | 2493.881 | 313.696 | 465.773 | 4.791 | 4987.763 | 627.392 |
| ДСТУ 8938 seamless tube 159x28 | 159 | 103* | 28 | 115.234 | 90.458 | 499.513 | 2584.834 | 325.136 | 487.825 | 4.736 | 5169.668 | 650.273 |
| ДСТУ 8938 seamless tube 159x30 | 159 | 99* | 30 | 121.58 | 95.44 | 499.513 | 2665.785 | 335.319 | 508.23 | 4.683 | 5331.571 | 670.638 |
| ДСТУ 8938 seamless tube 159x32 | 159 | 95* | 32 | 127.674 | 100.224 | 499.513 | 2737.497 | 344.339 | 527.051 | 4.63 | 5474.994 | 688.679 |
| ДСТУ 8938 seamless tube 159x34 | 159 | 91* | 34 | 133.518 | 104.811 | 499.513 | 2800.7 | 352.289 | 544.351 | 4.58 | 5601.401 | 704.579 |
| ДСТУ 8938 seamless tube 159x35 | 159 | 89* | 35 | 136.345 | 107.031 | 499.513 | 2829.332 | 355.891 | 552.452 | 4.555 | 5658.663 | 711.782 |
| ДСТУ 8938 seamless tube 159x36 | 159 | 87* | 36 | 139.11 | 109.201 | 499.513 | 2856.096 | 359.257 | 560.196 | 4.531 | 5712.193 | 718.515 |
| ДСТУ 8938 seamless tube 165x5 | 165 | 155* | 5 | 25.133 | 19.729 | 518.363 | 805.033 | 97.58 | 128.042 | 5.66 | 1610.066 | 195.16 |
| ДСТУ 8938 seamless tube 165x5.5 | 165 | 154* | 5.5 | 27.56 | 21.634 | 518.363 | 877.447 | 106.357 | 139.977 | 5.643 | 1754.893 | 212.714 |
| ДСТУ 8938 seamless tube 165x6 | 165 | 153* | 6 | 29.971 | 23.527 | 518.363 | 948.463 | 114.965 | 151.758 | 5.625 | 1896.926 | 229.93 |
| ДСТУ 8938 seamless tube 165x6.5 | 165 | 152* | 6.5 | 32.366 | 25.408 | 518.363 | 1018.101 | 123.406 | 163.386 | 5.609 | 2036.202 | 246.812 |
| ДСТУ 8938 seamless tube 165x7 | 165 | 151* | 7 | 34.746 | 27.276 | 518.363 | 1086.378 | 131.682 | 174.862 | 5.592 | 2172.755 | 263.364 |
| ДСТУ 8938 seamless tube 165x7.5 | 165 | 150* | 7.5 | 37.11 | 29.131 | 518.363 | 1153.311 | 139.795 | 186.188 | 5.575 | 2306.622 | 279.591 |
| ДСТУ 8938 seamless tube 165x8 | 165 | 149* | 8 | 39.458 | 30.975 | 518.363 | 1218.919 | 147.748 | 197.363 | 5.558 | 2437.839 | 295.496 |
| ДСТУ 8938 seamless tube 165x8.5 | 165 | 148* | 8.5 | 41.791 | 32.806 | 518.363 | 1283.22 | 155.542 | 208.389 | 5.541 | 2566.44 | 311.084 |
| ДСТУ 8938 seamless tube 165x9 | 165 | 147* | 9 | 44.108 | 34.625 | 518.363 | 1346.23 | 163.179 | 219.267 | 5.525 | 2692.46 | 326.359 |
| ДСТУ 8938 seamless tube 165x9.5 | 165 | 146* | 9.5 | 46.409 | 36.431 | 518.363 | 1407.967 | 170.663 | 229.998 | 5.508 | 2815.935 | 341.325 |
| ДСТУ 8938 seamless tube 165x10 | 165 | 145* | 10 | 48.695 | 38.225 | 518.363 | 1468.449 | 177.994 | 240.583 | 5.491 | 2936.898 | 355.988 |
| ДСТУ 8938 seamless tube 165x11 | 165 | 143* | 11 | 53.219 | 41.777 | 518.363 | 1585.714 | 192.208 | 261.32 | 5.459 | 3171.428 | 384.416 |
| ДСТУ 8938 seamless tube 165x12 | 165 | 141* | 12 | 57.68 | 45.279 | 518.363 | 1698.161 | 205.838 | 281.484 | 5.426 | 3396.321 | 411.675 |
| ДСТУ 8938 seamless tube 165x13 | 165 | 139* | 13 | 62.078 | 48.731 | 518.363 | 1805.923 | 218.9 | 301.084 | 5.394 | 3611.846 | 437.799 |
| ДСТУ 8938 seamless tube 165x14 | 165 | 137* | 14 | 66.413 | 52.134 | 518.363 | 1909.132 | 231.41 | 320.129 | 5.362 | 3818.265 | 462.82 |
| ДСТУ 8938 seamless tube 165x15 | 165 | 135* | 15 | 70.686 | 55.488 | 518.363 | 2007.919 | 243.384 | 338.625 | 5.33 | 4015.839 | 486.768 |
| ДСТУ 8938 seamless tube 165x16 | 165 | 133* | 16 | 74.896 | 58.793 | 518.363 | 2102.412 | 254.838 | 356.581 | 5.298 | 4204.824 | 509.676 |
| ДСТУ 8938 seamless tube 165x17 | 165 | 131* | 17 | 79.042 | 62.048 | 518.363 | 2192.737 | 265.786 | 374.006 | 5.267 | 4385.474 | 531.573 |
| ДСТУ 8938 seamless tube 165x18 | 165 | 129* | 18 | 83.127 | 65.254 | 518.363 | 2279.018 | 276.245 | 390.906 | 5.236 | 4558.036 | 552.489 |
| ДСТУ 8938 seamless tube 165x19 | 165 | 127* | 19 | 87.148 | 68.411 | 518.363 | 2361.378 | 286.228 | 407.29 | 5.205 | 4722.756 | 572.455 |
| ДСТУ 8938 seamless tube 165x20 | 165 | 125* | 20 | 91.106 | 71.518 | 518.363 | 2439.938 | 295.75 | 423.167 | 5.175 | 4879.875 | 591.5 |
| ДСТУ 8938 seamless tube 165x22 | 165 | 121* | 22 | 98.835 | 77.585 | 518.363 | 2586.128 | 313.47 | 453.427 | 5.115 | 5172.257 | 626.94 |
| ДСТУ 8938 seamless tube 165x24 | 165 | 117* | 24 | 106.311 | 83.455 | 518.363 | 2718.518 | 329.517 | 481.752 | 5.057 | 5437.036 | 659.035 |
| ДСТУ 8938 seamless tube 165x25 | 165 | 115* | 25 | 109.956 | 86.315 | 518.363 | 2779.819 | 336.948 | 495.208 | 5.028 | 5559.637 | 673.895 |
| ДСТУ 8938 seamless tube 165x26 | 165 | 113* | 26 | 113.537 | 89.127 | 518.363 | 2838.003 | 344 | 508.205 | 5 | 5676.006 | 688.001 |
| ДСТУ 8938 seamless tube 165x28 | 165 | 109* | 28 | 120.511 | 94.602 | 518.363 | 2945.452 | 357.024 | 532.849 | 4.944 | 5890.903 | 714.049 |
| ДСТУ 8938 seamless tube 165x30 | 165 | 105* | 30 | 127.235 | 99.879 | 518.363 | 3041.7 | 368.691 | 555.75 | 4.889 | 6083.4 | 737.382 |
| ДСТУ 8938 seamless tube 165x32 | 165 | 101* | 32 | 133.706 | 104.959 | 518.363 | 3127.555 | 379.098 | 576.971 | 4.836 | 6255.11 | 758.195 |
| ДСТУ 8938 seamless tube 165x34 | 165 | 97* | 34 | 139.927 | 109.842 | 518.363 | 3203.793 | 388.339 | 596.575 | 4.785 | 6407.586 | 776.677 |
| ДСТУ 8938 seamless tube 165x35 | 165 | 95* | 35 | 142.942 | 112.21 | 518.363 | 3238.54 | 392.55 | 605.792 | 4.76 | 6477.08 | 785.101 |
| ДСТУ 8938 seamless tube 165x36 | 165 | 93* | 36 | 145.896 | 114.528 | 518.363 | 3271.161 | 396.504 | 614.628 | 4.735 | 6542.322 | 793.009 |
| ДСТУ 8938 seamless tube 168x5 | 168 | 158* | 5 | 25.604 | 20.099 | 527.788 | 851.14 | 101.326 | 132.887 | 5.766 | 1702.281 | 202.652 |
| ДСТУ 8938 seamless tube 168x5.5 | 168 | 157* | 5.5 | 28.078 | 22.041 | 527.788 | 927.855 | 110.459 | 145.29 | 5.749 | 1855.709 | 220.918 |
| ДСТУ 8938 seamless tube 168x6 | 168 | 156* | 6 | 30.536 | 23.971 | 527.788 | 1003.117 | 119.419 | 157.536 | 5.731 | 2006.234 | 238.837 |
| ДСТУ 8938 seamless tube 168x6.5 | 168 | 155* | 6.5 | 32.979 | 25.888 | 527.788 | 1076.946 | 128.208 | 169.626 | 5.715 | 2153.891 | 256.416 |
| ДСТУ 8938 seamless tube 168x7 | 168 | 154* | 7 | 35.406 | 27.794 | 527.788 | 1149.359 | 136.828 | 181.561 | 5.698 | 2298.718 | 273.657 |
| ДСТУ 8938 seamless tube 168x7.5 | 168 | 153* | 7.5 | 37.817 | 29.686 | 527.788 | 1220.376 | 145.283 | 193.343 | 5.681 | 2440.751 | 290.566 |
| ДСТУ 8938 seamless tube 168x8 | 168 | 152* | 8 | 40.212 | 31.567 | 527.788 | 1290.013 | 153.573 | 204.971 | 5.664 | 2580.027 | 307.146 |
| ДСТУ 8938 seamless tube 168x8.5 | 168 | 151* | 8.5 | 42.592 | 33.435 | 527.788 | 1358.29 | 161.701 | 216.447 | 5.647 | 2716.58 | 323.402 |
| ДСТУ 8938 seamless tube 168x9 | 168 | 150* | 9 | 44.956 | 35.291 | 527.788 | 1425.224 | 169.669 | 227.772 | 5.63 | 2850.447 | 339.339 |
| ДСТУ 8938 seamless tube 168x9.5 | 168 | 149* | 9.5 | 47.305 | 37.134 | 527.788 | 1490.832 | 177.48 | 238.947 | 5.614 | 2981.664 | 354.96 |
| ДСТУ 8938 seamless tube 168x10 | 168 | 148* | 10 | 49.637 | 38.965 | 527.788 | 1555.132 | 185.135 | 249.973 | 5.597 | 3110.265 | 370.27 |
| ДСТУ 8938 seamless tube 168x11 | 168 | 146* | 11 | 54.255 | 42.59 | 527.788 | 1679.88 | 199.986 | 271.583 | 5.564 | 3359.76 | 399.971 |
| ДСТУ 8938 seamless tube 168x12 | 168 | 144* | 12 | 58.811 | 46.166 | 527.788 | 1799.605 | 214.239 | 292.608 | 5.532 | 3599.21 | 428.477 |
| ДСТУ 8938 seamless tube 168x13 | 168 | 142* | 13 | 63.303 | 49.693 | 527.788 | 1914.444 | 227.91 | 313.057 | 5.499 | 3828.888 | 455.82 |
| ДСТУ 8938 seamless tube 168x14 | 168 | 140* | 14 | 67.733 | 53.17 | 527.788 | 2024.532 | 241.016 | 332.939 | 5.467 | 4049.063 | 482.031 |
| ДСТУ 8938 seamless tube 168x15 | 168 | 138* | 15 | 72.1 | 56.598 | 527.788 | 2130.001 | 253.572 | 352.26 | 5.435 | 4260.002 | 507.143 |
| ДСТУ 8938 seamless tube 168x16 | 168 | 136* | 16 | 76.404 | 59.977 | 527.788 | 2230.983 | 265.593 | 371.029 | 5.404 | 4461.966 | 531.186 |
| ДСТУ 8938 seamless tube 168x17 | 168 | 134* | 17 | 80.645 | 63.306 | 527.788 | 2327.607 | 277.096 | 389.255 | 5.372 | 4655.214 | 554.192 |
| ДСТУ 8938 seamless tube 168x18 | 168 | 132* | 18 | 84.823 | 66.586 | 527.788 | 2420 | 288.095 | 406.944 | 5.341 | 4840 | 576.191 |
| ДСТУ 8938 seamless tube 168x19 | 168 | 130* | 19 | 88.938 | 69.817 | 527.788 | 2508.288 | 298.606 | 424.105 | 5.311 | 5016.575 | 597.211 |
| ДСТУ 8938 seamless tube 168x20 | 168 | 128* | 20 | 92.991 | 72.998 | 527.788 | 2592.593 | 308.642 | 440.747 | 5.28 | 5185.186 | 617.284 |
| ДСТУ 8938 seamless tube 168x22 | 168 | 124* | 22 | 100.908 | 79.213 | 527.788 | 2749.742 | 327.35 | 472.501 | 5.22 | 5499.484 | 654.7 |
| ДСТУ 8938 seamless tube 168x24 | 168 | 120* | 24 | 108.573 | 85.23 | 527.788 | 2892.396 | 344.333 | 502.272 | 5.161 | 5784.793 | 688.666 |
| ДСТУ 8938 seamless tube 168x25 | 168 | 118* | 25 | 112.312 | 88.165 | 527.788 | 2958.577 | 352.212 | 516.433 | 5.132 | 5917.154 | 704.423 |
| ДСТУ 8938 seamless tube 168x26 | 168 | 116* | 26 | 115.988 | 91.05 | 527.788 | 3021.477 | 359.7 | 530.123 | 5.104 | 6042.954 | 719.399 |
| ДСТУ 8938 seamless tube 168x28 | 168 | 112* | 28 | 123.15 | 96.673 | 527.788 | 3137.873 | 373.556 | 556.117 | 5.048 | 6275.746 | 747.113 |
| ДСТУ 8938 seamless tube 168x30 | 168 | 108* | 30 | 130.062 | 102.099 | 527.788 | 3242.444 | 386.005 | 580.32 | 4.993 | 6484.888 | 772.01 |
| ДСТУ 8938 seamless tube 168x32 | 168 | 104* | 32 | 136.722 | 107.327 | 527.788 | 3336.02 | 397.145 | 602.795 | 4.94 | 6672.039 | 794.29 |
| ДСТУ 8938 seamless tube 168x34 | 168 | 100* | 34 | 143.131 | 112.358 | 527.788 | 3419.399 | 407.071 | 623.605 | 4.888 | 6838.797 | 814.143 |
| ДСТУ 8938 seamless tube 168x35 | 168 | 98* | 35 | 146.241 | 114.799 | 527.788 | 3457.506 | 411.608 | 633.407 | 4.862 | 6915.012 | 823.216 |
| ДСТУ 8938 seamless tube 168x36 | 168 | 96* | 36 | 149.288 | 117.191 | 527.788 | 3493.35 | 415.875 | 642.816 | 4.837 | 6986.701 | 831.75 |
| ДСТУ 8938 seamless tube 168x38 | 168 | 92* | 38 | 155.195 | 121.828 | 527.788 | 3558.614 | 423.645 | 660.491 | 4.789 | 7117.228 | 847.289 |
| ДСТУ 8938 seamless tube 168x40 | 168 | 88* | 40 | 160.85 | 126.267 | 527.788 | 3615.898 | 430.464 | 676.693 | 4.741 | 7231.795 | 860.928 |
| ДСТУ 8938 seamless tube 168x42 | 168 | 84* | 42 | 166.253 | 130.509 | 527.788 | 3665.88 | 436.414 | 691.488 | 4.696 | 7331.761 | 872.829 |
| ДСТУ 8938 seamless tube 168x45 | 168 | 78* | 45 | 173.887 | 136.501 | 527.788 | 3728.575 | 443.878 | 711.18 | 4.631 | 7457.151 | 887.756 |
| ДСТУ 8938 seamless tube 178x5 | 178 | 168* | 5 | 27.175 | 21.332 | 559.203 | 1017.492 | 114.325 | 149.687 | 6.119 | 2034.983 | 228.65 |
| ДСТУ 8938 seamless tube 178x5.5 | 178 | 167* | 5.5 | 29.806 | 23.398 | 559.203 | 1109.765 | 124.693 | 163.715 | 6.102 | 2219.531 | 249.385 |
| ДСТУ 8938 seamless tube 178x6 | 178 | 166* | 6 | 32.421 | 25.451 | 559.203 | 1200.396 | 134.876 | 177.576 | 6.085 | 2400.793 | 269.752 |
| ДСТУ 8938 seamless tube 178x6.5 | 178 | 165* | 6.5 | 35.021 | 27.491 | 559.203 | 1289.404 | 144.877 | 191.271 | 6.068 | 2578.808 | 289.754 |
| ДСТУ 8938 seamless tube 178x7 | 178 | 164* | 7 | 37.605 | 29.52 | 559.203 | 1376.808 | 154.698 | 204.801 | 6.051 | 2753.616 | 309.395 |
| ДСТУ 8938 seamless tube 178x7.5 | 178 | 163* | 7.5 | 40.173 | 31.536 | 559.203 | 1462.628 | 164.34 | 218.168 | 6.034 | 2925.256 | 328.68 |
| ДСТУ 8938 seamless tube 178x8 | 178 | 162* | 8 | 42.726 | 33.54 | 559.203 | 1546.883 | 173.807 | 231.371 | 6.017 | 3093.765 | 347.614 |
| ДСТУ 8938 seamless tube 178x8.5 | 178 | 161* | 8.5 | 45.262 | 35.531 | 559.203 | 1629.591 | 183.1 | 244.412 | 6 | 3259.183 | 366.2 |
| ДСТУ 8938 seamless tube 178x9 | 178 | 160* | 9 | 47.784 | 37.51 | 559.203 | 1710.773 | 192.222 | 257.292 | 5.984 | 3421.546 | 384.443 |
| ДСТУ 8938 seamless tube 178x9.5 | 178 | 159* | 9.5 | 50.289 | 39.477 | 559.203 | 1790.447 | 201.174 | 270.012 | 5.967 | 3580.894 | 402.348 |
| ДСТУ 8938 seamless tube 178x10 | 178 | 158* | 10 | 52.779 | 41.431 | 559.203 | 1868.632 | 209.959 | 282.573 | 5.95 | 3737.264 | 419.917 |
| ДСТУ 8938 seamless tube 178x11 | 178 | 156* | 11 | 57.711 | 45.303 | 559.203 | 2020.608 | 227.035 | 307.223 | 5.917 | 4041.217 | 454.069 |
| ДСТУ 8938 seamless tube 178x12 | 178 | 154* | 12 | 62.581 | 49.126 | 559.203 | 2166.851 | 243.466 | 331.248 | 5.884 | 4333.701 | 486.933 |
| ДСТУ 8938 seamless tube 178x13 | 178 | 152* | 13 | 67.387 | 52.899 | 559.203 | 2307.505 | 259.27 | 354.657 | 5.852 | 4615.01 | 518.54 |
| ДСТУ 8938 seamless tube 178x14 | 178 | 150* | 14 | 72.131 | 56.623 | 559.203 | 2442.715 | 274.462 | 377.459 | 5.819 | 4885.43 | 548.925 |
| ДСТУ 8938 seamless tube 178x15 | 178 | 148* | 15 | 76.812 | 60.297 | 559.203 | 2572.624 | 289.059 | 399.66 | 5.787 | 5145.248 | 578.118 |
| ДСТУ 8938 seamless tube 178x16 | 178 | 146* | 16 | 81.43 | 63.923 | 559.203 | 2697.371 | 303.075 | 421.269 | 5.755 | 5394.743 | 606.151 |
| ДСТУ 8938 seamless tube 178x17 | 178 | 144* | 17 | 85.985 | 67.499 | 559.203 | 2817.096 | 316.528 | 442.295 | 5.724 | 5634.193 | 633.055 |
| ДСТУ 8938 seamless tube 178x18 | 178 | 142* | 18 | 90.478 | 71.025 | 559.203 | 2931.935 | 329.431 | 462.744 | 5.693 | 5863.871 | 658.862 |
* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.