山東聊城20#鋼管廠生產的熱軋20#鋼管外徑及壁厚公差對比
| 6.5 | 7 | 8 | 8.5 | 9 | 10 | 12 | |
32 | 4.088 |
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38 | 5.049 |
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42 | 5.691 |
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45 | 6.172 |
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50 | 6.973 | 7.423 | 8.286 | 8.699 |
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54 | 7.614 | 8.114 | 9.075 | 9.538 |
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57 | 8.095 | 8.632 | 9.667 | 10.167 |
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60 | 8.576 | 9.149 | 10.259 | 10.796 |
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63.5 | 9.137 | 9.754 | 10.950 | 11.529 |
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68 | 9.858 | 10.530 | 11.838 | 12.473 |
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70 | 10.179 | 10.876 | 12.232 | 12.892 | 13.539 | 14.797 | 17.164 | |
73 | 10.660 | 11.394 | 12.824 | 13.521 | 14.205 | 15.537 | 18.052 | |
76 | 11.141 | 11.912 | 13.416 | 14.150 | 14.871 | 16.277 | 18.940 | |
89 | 13.225 | 14.156 | 15.981 | 16.875 | 17.756 | 19.483 | 22.787 | |
108 | 16.270 | 17.436 | 19.729 | 20.858 | 21.973 | 24.168 | 28.410 | |
133 | 20.278 | 21.751 | 24.662 | 26.098 | 27.522 | 30.334 | 35.809 | |
159 | 24.446 | 26.240 | 29.791 | 31.548 | 33.293 | 36.746 | 43.503 | |
219 | 34.064 | 36.598 | 41.629 | 44.126 | 46.610 | 51.543 | 61.259 | |
273 | 42.720 | 45.920 | 52.283 | 55.445 | 58.596 | 64.860 | 77.240 | |
325 | 51.056 | 54.897 | 62.542 | 66.346 | 70.137 | 77.684 | 92.629 | |
355 | 55.865 | 60.076 | 68.460 | 72.634 | 76.796 | 85.082 | 101.507 | |
377 | 59.391 | 63.873 | 72.801 | 77.246 | 81.679 | 90.508 | 108.018 | |
426 | 67.246 | 72.332 | 82.468 | 87.518 | 92.555 | 102.592 | 122.519 | |
450 | 71.093 | 76.475 | 87.203 | 92.549 | 97.882 | 108.511 | 129.621 | |
480 | 75.902 | 81.654 | 93.122 | 98.837 | 104.540 | 115.909 | 138.499 | |
530 | 83.917 | 90.286 | 102.987 | 109.319 | 115.638 | 128.240 | 153.296 | |
630 | 99.947 | 107.549 | 122.716 | 130.281 | 137.833 | 152.902 | 182.890 |