公称外径 mm 公称壁厚 mm 5.0 5.5 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 18.0 20.0 22.0 219 26.39 28.96 31.51 36.60 41.63 273 33.04 36.28 39.51 45.92 325 39.46 43.33 47.26 54.90 62.54 70.13 377 45.88 50.39 54.89 63.87 72.80 81.67 426 51.91 57.03 62.14 72.33 82.46 92.55 102.59 457 55.73 61.24 66.73 77.69 88.58 99.43 110.23 120.98 131.60 142.34 508 74.28 86.48 98.64 110.75 122.81 134.82 1