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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.

ДСТУ 8938

Geometry

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Outer diameter
Inner diameter
Wall thickness
Section area
Mass per metre
Section perimeter
Second moment of area
Elastic section modulus
Plastic section modulus
Radius of gyration
Torsional constant
Torsional modulus
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 32x2.5 32 27* 2.5 2.317 1.819 100.531 2.538 1.587 2.181 1.047 5.077 3.173
ДСТУ 8938 seamless tube 32x2.6 32 26.8* 2.6 2.401 1.885 100.531 2.615 1.634 2.253 1.044 5.23 3.269
ДСТУ 8938 seamless tube 32x2.8 32 26.4* 2.8 2.569 2.016 100.531 2.763 1.727 2.395 1.037 5.525 3.453
ДСТУ 8938 seamless tube 32x3 32 26* 3 2.733 2.146 100.531 2.904 1.815 2.532 1.031 5.808 3.63
ДСТУ 8938 seamless tube 32x3.2 32 25.6* 3.2 2.895 2.273 100.531 3.039 1.899 2.665 1.024 6.078 3.799
ДСТУ 8938 seamless tube 32x3.5 32 25* 3.5 3.134 2.46 100.531 3.23 2.019 2.857 1.015 6.459 4.037
ДСТУ 8938 seamless tube 32x4 32 24* 4 3.519 2.762 100.531 3.519 2.199 3.157 1 7.037 4.398
ДСТУ 8938 seamless tube 32x4.5 32 23* 4.5 3.888 3.052 100.531 3.774 2.358 3.434 0.985 7.547 4.717
ДСТУ 8938 seamless tube 32x5 32 22* 5 4.241 3.329 100.531 3.997 2.498 3.687 0.971 7.995 4.997
ДСТУ 8938 seamless tube 32x5.5 32 21* 5.5 4.579 3.594 100.531 4.193 2.62 3.918 0.957 8.385 5.241
ДСТУ 8938 seamless tube 32x6 32 20* 6 4.901 3.847 100.531 4.362 2.726 4.128 0.943 8.724 5.452
ДСТУ 8938 seamless tube 32x6.5 32 19* 6.5 5.207 4.088 100.531 4.507 2.817 4.318 0.93 9.015 5.634
ДСТУ 8938 seamless tube 32x7 32 18* 7 5.498 4.316 100.531 4.632 2.895 4.489 0.918 9.264 5.79
ДСТУ 8938 seamless tube 32x7.5 32 17* 7.5 5.773 4.532 100.531 4.737 2.961 4.643 0.906 9.474 5.922
ДСТУ 8938 seamless tube 32x8 32 16* 8 6.032 4.735 100.531 4.825 3.016 4.779 0.894 9.651 6.032
ДСТУ 8938 seamless tube 33.7x2.5 33.7 28.7* 2.5 2.45 1.924 105.872 3.001 1.781 2.439 1.107 6.002 3.562
ДСТУ 8938 seamless tube 33.7x2.6 33.7 28.5* 2.6 2.54 1.994 105.872 3.093 1.835 2.521 1.103 6.185 3.671
ДСТУ 8938 seamless tube 33.7x2.8 33.7 28.1* 2.8 2.718 2.134 105.872 3.271 1.941 2.681 1.097 6.541 3.882
ДСТУ 8938 seamless tube 33.7x3 33.7 27.7* 3 2.893 2.271 105.872 3.441 2.042 2.836 1.091 6.883 4.085
ДСТУ 8938 seamless tube 33.7x3.2 33.7 27.3* 3.2 3.066 2.407 105.872 3.605 2.139 2.988 1.084 7.209 4.279
ДСТУ 8938 seamless tube 33.7x3.5 33.7 26.7* 3.5 3.321 2.607 105.872 3.837 2.277 3.206 1.075 7.673 4.554
ДСТУ 8938 seamless tube 33.7x4 33.7 25.7* 4 3.732 2.93 105.872 4.19 2.487 3.55 1.06 8.38 4.973
ДСТУ 8938 seamless tube 33.7x4.5 33.7 24.7* 4.5 4.128 3.241 105.872 4.504 2.673 3.867 1.045 9.008 5.346
ДСТУ 8938 seamless tube 33.7x5 33.7 23.7* 5 4.508 3.539 105.872 4.783 2.838 4.16 1.03 9.565 5.677
ДСТУ 8938 seamless tube 33.7x5.5 33.7 22.7* 5.5 4.873 3.825 105.872 5.028 2.984 4.429 1.016 10.056 5.968
ДСТУ 8938 seamless tube 33.7x6 33.7 21.7* 6 5.221 4.099 105.872 5.243 3.111 4.676 1.002 10.486 6.223
ДСТУ 8938 seamless tube 33.7x6.5 33.7 20.7* 6.5 5.554 4.36 105.872 5.43 3.223 4.901 0.989 10.86 6.445
ДСТУ 8938 seamless tube 33.7x7 33.7 19.7* 7 5.872 4.609 105.872 5.592 3.319 5.105 0.976 11.184 6.637
ДСТУ 8938 seamless tube 33.7x7.5 33.7 18.7* 7.5 6.173 4.846 105.872 5.731 3.401 5.289 0.964 11.462 6.802
ДСТУ 8938 seamless tube 33.7x8 33.7 17.7* 8 6.459 5.07 105.872 5.849 3.471 5.455 0.952 11.699 6.943
ДСТУ 8938 seamless tube 35x2.5 35 30* 2.5 2.553 2.004 109.956 3.39 1.937 2.646 1.152 6.78 3.874
ДСТУ 8938 seamless tube 35x2.6 35 29.8* 2.6 2.646 2.077 109.956 3.495 1.997 2.735 1.149 6.99 3.994
ДСТУ 8938 seamless tube 35x2.8 35 29.4* 2.8 2.832 2.223 109.956 3.699 2.114 2.91 1.143 7.398 4.227
ДСТУ 8938 seamless tube 35x3 35 29* 3 3.016 2.368 109.956 3.894 2.225 3.081 1.136 7.789 4.451
ДСТУ 8938 seamless tube 35x3.2 35 28.6* 3.2 3.197 2.51 109.956 4.082 2.333 3.247 1.13 8.164 4.665
ДСТУ 8938 seamless tube 35x3.5 35 28* 3.5 3.464 2.719 109.956 4.349 2.485 3.487 1.121 8.698 4.97
ДСТУ 8938 seamless tube 35x4 35 27* 4 3.896 3.058 109.956 4.757 2.719 3.865 1.105 9.515 5.437
ДСТУ 8938 seamless tube 35x4.5 35 26* 4.5 4.312 3.385 109.956 5.123 2.927 4.217 1.09 10.246 5.855
ДСТУ 8938 seamless tube 35x5 35 25* 5 4.712 3.699 109.956 5.449 3.114 4.542 1.075 10.897 6.227
ДСТУ 8938 seamless tube 35x5.5 35 24* 5.5 5.097 4.001 109.956 5.738 3.279 4.842 1.061 11.475 6.557
ДСТУ 8938 seamless tube 35x6 35 23* 6 5.466 4.291 109.956 5.993 3.424 5.118 1.047 11.985 6.849
ДСТУ 8938 seamless tube 35x6.5 35 22* 6.5 5.82 4.569 109.956 6.216 3.552 5.371 1.034 12.433 7.104
ДСТУ 8938 seamless tube 35x7 35 21* 7 6.158 4.834 109.956 6.412 3.664 5.602 1.02 12.823 7.327
ДСТУ 8938 seamless tube 35x7.5 35 20* 7.5 6.48 5.086 109.956 6.581 3.76 5.813 1.008 13.162 7.521
ДСТУ 8938 seamless tube 35x8 35 19* 8 6.786 5.327 109.956 6.726 3.844 6.003 0.996 13.453 7.687
ДСТУ 8938 seamless tube 38x2.5 38 33* 2.5 2.788 2.189 119.381 4.414 2.323 3.156 1.258 8.828 4.646
ДСТУ 8938 seamless tube 38x2.6 38 32.8* 2.6 2.892 2.27 119.381 4.554 2.397 3.264 1.255 9.108 4.794
ДСТУ 8938 seamless tube 38x2.8 38 32.4* 2.8 3.096 2.431 119.381 4.826 2.54 3.477 1.248 9.652 5.08
ДСТУ 8938 seamless tube 38x3 38 32* 3 3.299 2.589 119.381 5.088 2.678 3.684 1.242 10.176 5.356
ДСТУ 8938 seamless tube 38x3.2 38 31.6* 3.2 3.498 2.746 119.381 5.341 2.811 3.886 1.236 10.682 5.622
ДСТУ 8938 seamless tube 38x3.5 38 31* 3.5 3.793 2.978 119.381 5.702 3.001 4.18 1.226 11.404 6.002
ДСТУ 8938 seamless tube 38x4 38 30* 4 4.273 3.354 119.381 6.259 3.294 4.645 1.21 12.519 6.589
ДСТУ 8938 seamless tube 38x4.5 38 29* 4.5 4.736 3.718 119.381 6.764 3.56 5.081 1.195 13.527 7.12
ДСТУ 8938 seamless tube 38x5 38 28* 5 5.184 4.069 119.381 7.218 3.799 5.487 1.18 14.436 7.598
ДСТУ 8938 seamless tube 38x5.5 38 27* 5.5 5.616 4.408 119.381 7.627 4.014 5.865 1.165 15.253 8.028
ДСТУ 8938 seamless tube 38x6 38 26* 6 6.032 4.735 119.381 7.992 4.206 6.216 1.151 15.984 8.413
ДСТУ 8938 seamless tube 38x6.5 38 25* 6.5 6.432 5.049 119.381 8.318 4.378 6.541 1.137 16.636 8.756
ДСТУ 8938 seamless tube 38x7 38 24* 7 6.817 5.352 119.381 8.607 4.53 6.841 1.124 17.214 9.06
ДСТУ 8938 seamless tube 38x7.5 38 23* 7.5 7.186 5.641 119.381 8.862 4.664 7.118 1.11 17.723 9.328
ДСТУ 8938 seamless tube 38x8 38 22* 8 7.54 5.919 119.381 9.085 4.782 7.371 1.098 18.171 9.564
ДСТУ 8938 seamless tube 40x2.5 40 35* 2.5 2.945 2.312 125.664 5.2 2.6 3.521 1.329 10.4 5.2
ДСТУ 8938 seamless tube 40x2.6 40 34.8* 2.6 3.055 2.398 125.664 5.367 2.684 3.643 1.325 10.734 5.367
ДСТУ 8938 seamless tube 40x2.8 40 34.4* 2.8 3.272 2.569 125.664 5.692 2.846 3.882 1.319 11.385 5.692
ДСТУ 8938 seamless tube 40x3 40 34* 3 3.487 2.737 125.664 6.007 3.003 4.116 1.312 12.013 6.007
ДСТУ 8938 seamless tube 40x3.2 40 33.6* 3.2 3.7 2.904 125.664 6.31 3.155 4.344 1.306 12.62 6.31
ДСТУ 8938 seamless tube 40x3.5 40 33* 3.5 4.013 3.151 125.664 6.745 3.372 4.677 1.296 13.49 6.745
ДСТУ 8938 seamless tube 40x4 40 32* 4 4.524 3.551 125.664 7.419 3.71 5.205 1.281 14.838 7.419
ДСТУ 8938 seamless tube 40x4.5 40 31* 4.5 5.019 3.94 125.664 8.033 4.017 5.702 1.265 16.066 8.033
ДСТУ 8938 seamless tube 40x5 40 30* 5 5.498 4.316 125.664 8.59 4.295 6.167 1.25 17.181 8.59
ДСТУ 8938 seamless tube 40x5.5 40 29* 5.5 5.961 4.68 125.664 9.095 4.547 6.602 1.235 18.189 9.095
ДСТУ 8938 seamless tube 40x6 40 28* 6 6.409 5.031 125.664 9.549 4.775 7.008 1.221 19.098 9.549
ДСТУ 8938 seamless tube 40x6.5 40 27* 6.5 6.841 5.37 125.664 9.958 4.979 7.386 1.206 19.915 9.958
ДСТУ 8938 seamless tube 40x7 40 26* 7 7.257 5.697 125.664 10.323 5.162 7.737 1.193 20.646 10.323
ДСТУ 8938 seamless tube 40x7.5 40 25* 7.5 7.658 6.011 125.664 10.649 5.324 8.063 1.179 21.298 10.649
ДСТУ 8938 seamless tube 40x8 40 24* 8 8.042 6.313 125.664 10.938 5.469 8.363 1.166 21.876 10.938
ДСТУ 8938 seamless tube 42x2.5 42 37* 2.5 3.102 2.435 131.947 6.075 2.893 3.906 1.399 12.149 5.785
ДСТУ 8938 seamless tube 42x2.6 42 36.8* 2.6 3.218 2.526 131.947 6.272 2.987 4.042 1.396 12.544 5.973
ДСТУ 8938 seamless tube 42x2.8 42 36.4* 2.8 3.448 2.707 131.947 6.657 3.17 4.31 1.389 13.314 6.34
ДСТУ 8938 seamless tube 42x3 42 36* 3 3.676 2.885 131.947 7.03 3.347 4.572 1.383 14.059 6.695
ДСТУ 8938 seamless tube 42x3.2 42 35.6* 3.2 3.901 3.062 131.947 7.39 3.519 4.828 1.376 14.78 7.038
ДСТУ 8938 seamless tube 42x3.5 42 35* 3.5 4.233 3.323 131.947 7.908 3.766 5.202 1.367 15.817 7.532
ДСТУ 8938 seamless tube 42x4 42 34* 4 4.775 3.749 131.947 8.715 4.15 5.797 1.351 17.43 8.3
ДСТУ 8938 seamless tube 42x4.5 42 33* 4.5 5.301 4.162 131.947 9.453 4.501 6.359 1.335 18.906 9.003
ДСТУ 8938 seamless tube 42x5 42 32* 5 5.812 4.562 131.947 10.127 4.823 6.887 1.32 20.255 9.645
ДСТУ 8938 seamless tube 42x5.5 42 31* 5.5 6.307 4.951 131.947 10.741 5.115 7.383 1.305 21.482 10.23
ДСТУ 8938 seamless tube 42x6 42 30* 6 6.786 5.327 131.947 11.298 5.38 7.848 1.29 22.597 10.76
ДСТУ 8938 seamless tube 42x6.5 42 29* 6.5 7.249 5.691 131.947 11.803 5.62 8.283 1.276 23.605 11.241
ДСТУ 8938 seamless tube 42x7 42 28* 7 7.697 6.042 131.947 12.257 5.837 8.689 1.262 24.515 11.674
ДСТУ 8938 seamless tube 42x7.5 42 27* 7.5 8.129 6.381 131.947 12.666 6.031 9.068 1.248 25.332 12.063
ДСТУ 8938 seamless tube 42x8 42 26* 8 8.545 6.708 131.947 13.031 6.205 9.419 1.235 26.063 12.411
ДСТУ 8938 seamless tube 42x8.5 42 25* 8.5 8.946 7.022 131.947 13.357 6.36 9.744 1.222 26.714 12.721
ДСТУ 8938 seamless tube 42x9 42 24* 9 9.331 7.324 131.947 13.646 6.498 10.044 1.209 27.292 12.996
ДСТУ 8938 seamless tube 42x9.5 42 23* 9.5 9.7 7.614 131.947 13.901 6.619 10.32 1.197 27.802 13.239
ДСТУ 8938 seamless tube 42x10 42 22* 10 10.053 7.892 131.947 14.125 6.726 10.573 1.185 28.249 13.452
ДСТУ 8938 seamless tube 42.4x2.5 42.4 37.4* 2.5 3.134 2.46 133.204 6.261 2.953 3.985 1.413 12.521 5.906
ДСТУ 8938 seamless tube 42.4x2.6 42.4 37.2* 2.6 3.251 2.552 133.204 6.464 3.049 4.124 1.41 12.929 6.099
ДСТУ 8938 seamless tube 42.4x2.8 42.4 36.8* 2.8 3.483 2.734 133.204 6.862 3.237 4.398 1.404 13.725 6.474
ДСТУ 8938 seamless tube 42.4x3 42.4 36.4* 3 3.713 2.915 133.204 7.247 3.419 4.666 1.397 14.495 6.837
ДСТУ 8938 seamless tube 42.4x3.2 42.4 36* 3.2 3.941 3.094 133.204 7.62 3.594 4.928 1.391 15.24 7.189
ДСТУ 8938 seamless tube 42.4x3.5 42.4 35.4* 3.5 4.277 3.358 133.204 8.156 3.847 5.311 1.381 16.312 7.694

* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.