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