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 530x36 | 530 | 458* | 36 | 558.701 | 438.58 | 1665.044 | 171333.992 | 6465.434 | 8800.848 | 17.512 | 342667.985 | 12930.867 |
| ДСТУ 8938 seamless tube 530x38 | 530 | 454* | 38 | 587.352 | 461.071 | 1665.044 | 178781.188 | 6746.46 | 9216.723 | 17.447 | 357562.376 | 13492.92 |
| ДСТУ 8938 seamless tube 530x40 | 530 | 450* | 40 | 615.752 | 483.365 | 1665.044 | 186034.121 | 7020.156 | 9625.333 | 17.382 | 372068.243 | 14040.311 |
| ДСТУ 8938 seamless tube 530x42 | 530 | 446* | 42 | 643.901 | 505.462 | 1665.044 | 193096.2 | 7286.649 | 10026.744 | 17.317 | 386192.401 | 14573.298 |
| ДСТУ 8938 seamless tube 530x45 | 530 | 440* | 45 | 685.653 | 538.237 | 1665.044 | 203338.848 | 7673.164 | 10615.5 | 17.221 | 406677.696 | 15346.328 |
| ДСТУ 8938 seamless tube 530x48 | 530 | 434* | 48 | 726.839 | 570.569 | 1665.044 | 213170.94 | 8044.186 | 11188.416 | 17.126 | 426341.88 | 16088.373 |
| ДСТУ 8938 seamless tube 530x50 | 530 | 430* | 50 | 753.982 | 591.876 | 1665.044 | 219503.079 | 8283.135 | 11561.667 | 17.062 | 439006.157 | 16566.27 |
| ДСТУ 8938 seamless tube 530x56 | 530 | 418* | 56 | 833.904 | 654.615 | 1665.044 | 237466.773 | 8961.01 | 12640.395 | 16.875 | 474933.547 | 17922.021 |
| ДСТУ 8938 seamless tube 530x60 | 530 | 410* | 60 | 885.929 | 695.454 | 1665.044 | 248613.862 | 9381.655 | 13326 | 16.752 | 497227.723 | 18763.31 |
| ДСТУ 8938 seamless tube 530x63 | 530 | 404* | 63 | 924.288 | 725.566 | 1665.044 | 256556.924 | 9681.393 | 13822.956 | 16.661 | 513113.848 | 19362.787 |
| ДСТУ 8938 seamless tube 530x65 | 530 | 400* | 65 | 949.546 | 745.394 | 1665.044 | 261659.374 | 9873.939 | 14146.167 | 16.6 | 523318.748 | 19747.877 |
| ДСТУ 8938 seamless tube 530x70 | 530 | 390* | 70 | 1011.593 | 794.1 | 1665.044 | 273762.311 | 10330.653 | 14926.333 | 16.451 | 547524.622 | 20661.306 |
| ДСТУ 8938 seamless tube 530x75 | 530 | 380* | 75 | 1072.068 | 841.574 | 1665.044 | 284969.206 | 10753.555 | 15667.5 | 16.304 | 569938.413 | 21507.11 |
* Calculated value: worked out from the dimensions the standard specifies, not listed in the standard itself.