常用钢管规格DN对照表
DN15-巾 18mm DN20-巾 25mm DN25Q 32mn, DN32-巾 38mm DN40-巾 45mn, DN50-巾 57mm DN65Q 73mn, DN80-巾 mm DN100-巾 108mm DN125-^ 133mm DN150Q 159mm DN200-^ 219mm DN250-巾 273mm DN300邛 325mm DN350^ 377mm DN400-巾 426mm DN450-巾 480mm DN500-^ 530mm DN600-巾 630mm
焊接钢管规格尺寸大全 外径 壁厚(毫米) (毫米) 32 38 42 45 50 54 57 60 63.5  2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 理论重量(公斤/米) 1.82 2.15 2.46 2.76 3.05 3.33 3.59 3.85 4.09 4.32 4.53 2.19 2.59 2.98 3.35 3.72 4.07 4.41 4.74 5.05 5.35 5. 2.44 2. 3.35 3.75 4.16 4.56 4.95 5.33 5.69 6.04 6.38 2.62 3.11 3.58 4.04 4.49 4.93 5.36 5.77 6.17 6.56 6.94 2.93 3.48 4.01 4.54 5.05 5.55 6.04 6.51 6.97 7.42 7.86 - - - - 3.77 4.36 4.93 5.49 6.04 6.58 7.10 7.61 8.11 8.60 4.00 4.62 5.23 5.83 6.41 6.99 7.55 8.10 8.63 9.16 4.22 4.88 5.52 6.16 6.78 7.39 7.99 8.58 9.15 9.71 4.48 5.18 5.87 6.55 7.21 7.87 8.51 9.14 9.75 10.36 68 70 73 76 83  95 102 108 114 - - - - - - - - - - 4.81 5.57 6.31 7.05 7^7 8.48 9.17 9.86 10.53 11.19 4.96 5.74 6.51 7.27 8.01 8.75 9.47 10.18 10.88 11.56 5.18 6.00 6.81 7.60 8.38 9.16 9.91 10.66 11.39 12.11 5.40 6.26 7.10 7.93 8.75 9.56 10.36 11.14 11.91 12.67 - - - - - - 6.86 7.79 8.71 9.62 10.51 11.39 12.26 13.12 13.96 7.38 8.38 9.38 10.36 11.33 12.28 13.22 14.16 15.07 7.90 8.98 10.04 11.10 12.14 13.17 14.19 15.19 16.18 8.50 9.67 10.82 11.96 13.09 14.21 15.31 16.40 17.48 - - 10.26 11.49 12.70 13.90 15.09 16.27 17.44 18.59 10.85 12.15 13.44 14.72 15.98 17.23 18.47 19.70 壁厚(毫米) 外径 2.5 (毫米)  3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 理论重量(公斤/米) 121  - -  - - - - - - - 11.54 12.93 14.30 15.67 17.02 18.35 19.68 20.99 12.13 13.59 15.04 16.48 17.90 19.32 20.72 22.10 12.73 14.26 15.78 17.29 18.79 20.28 21.75 23.21 - - - - 15.04 16.65 18.24 19.83 21.40 22.96 24.51 15.70 17.39 19.06 20.72 22.36 24.00 25.62 16.37 18.13 19.87 21.60 23.32 25.03 26.73 17.15 18.99 20.82 22. 24.45 26.24 28.02 127 - 133 140 146 152 159  - -  - - -  - - - 168 180 194 203 - - -  - - -  - - -  - - -  — - -  20.10 22.04 23.97 25. 27.79 29.69 21.59 23.70 25.75 27.70 29.87 31.91 23.31 25.60 27.82 30.00 32.28 34.50   29.14 31.50 33.83 36.16      219 245 273 299 325  - - - -  - - -   31.52 34.06 36.60 39.12 -  - -  - - - - -  - -  -  38.23 41.09 43.85 42. 45.92 49.10    53.91        - - 58.74