答：管道分类办法通常按介质的压力、温度、性质分类，也可按管道材质、温度和压力分类，以及材质状况等分类办法。
这里管道按其材质可分为钢管、有色金属管、铸铁管、非金属管四种。他们的主要用处例举如下：
（1）钢管
1）普通无缝钢管、用于制造流体介质管道或制造构造管件等。规范为 GB/T 8163—1999《保送流体用无缝钢管》。常用规格：构造用无缝钢管外径 5~200，壁厚 0.25~14mm，见表 2-1；保送流体用无缝钢管外径 32~630mm。壁厚 2.5~75mm，见表 2-2。
常用无缝钢管规格尺寸及单位长度理论质量（kg/m）见表 2-3。
| 外径/mm | 壁厚/mm | ||||||||
| 0.25 | 0.30 | 0.40 | 0.50 | 0.60 | 0.80 | 1.0 | 1.2 | 1.4 | |
| 理论重量/（kg/m） | |||||||||
| 5 | 0.0292 | 0.0348 | 0.0454 | 0.055 | 0.065 | 0.083 | 0.099 | 0.112 | 0.124 |
| 6 | 0.0354 | 0.0421 | 0.055 | 0.068 | 0.080 | 0.103 | 0.123 | 0.142 | 0.159 |
| 7 | 0.0416 | 0.0496 | 0.065 | 0.080 | 0.095 | 0.122 | 0.148 | 0.172 | 0.193 |
| 8 | 0.0477 | 0.057 | 0.075 | 0.092 | 0.110 | 0.142 | 0.173 | 0.202 | 0.227 |
| 9 | 0.054 | 0.064 | 0.085 | 0.105 | 0.125 | 0.162 | 0.197 | 0.231 | 0.262 |
| 10 | 0.060 | 0.072 | 0.095 | 0.117 | 0.139 | 0.182 | 0.222 | 0.261 | 0.296 |
| 11 | 0.066 | 0.079 | 0.105 | 0.129 | 0.154 | 0.201 | 0.247 | 0.290 | 0.331 |
| 12 | 0.072 | 0.087 | 0.115 | 0.142 | 0.169 | 0.221 | 0.271 | 0.320 | 0.365 |
| 14 | 0.085 | 0.101 | 0.134 | 0.166 | 0.199 | 0.260 | 0.321 | 0.379 | 0.434 |
| 16 | 0.094 | 0.116 | 0.154 | 0.191 | 0.228 | 0.300 | 0.370 | 0.438 | 0.503 |
| 18 | 0.109 | 0.131 | 0.174 | 0.216 | 0.258 | 0.340 | 0.419 | 0.497 | 0.572 |
| 20 | 0.122 | 0.146 | 0.193 | 0.240 | 0.288 | 0.379 | 0.469 | 0.556 | 0.642 |
| 22 | — | — | 0.212 | 0.265 | 0.318 | 0.419 | 0.518 | 0.616 | 0.710 |
| 25 | — | — | 0.242 | 0.302 | 0.363 | 0.478 | 0.592 | 0.703 | 0.813 |
| 28 | — | — | 0.272 | 0.340 | 0.406 | 0.536 | 0.666 | 0.792 | 0.916 |
| 29 | — | — | 0.282 | 0.352 | 0.418 | 0.553 | 0.691 | 0.823 | 0.951 |
| 30 | — | — | 0.292 | 0.364 | 0.436 | 0.576 | 0.715 | 0.851 | 0.986 |
| 32 | — | — | 0.311 | 0.389 | 0.466 | 0.615 | 0.765 | 0.910 | 1.05 |
| 34 | — | — | 0.331 | 0.413 | 0.496 | 0.655 | 0.814 | 0.968 | 1.12 |
| 36 | — | — | 0.350 | 0.438 | 0.525 | 0.695 | 0.863 | 1.03 | 1.19 |
| 38 | — | — | 0.370 | 0.464 | 0.555 | 0.734 | 0.912 | 1.09 | 1.26 |
| 40 | — | — | 0.390 | 0.494 | 0.585 | 0.774 | 0.962 | 1.15 | 1.33 |
| 42 | — | — | — | — | — | — | 1.01 | 1.21 | 1.41 |
| 44.5 | — | — | — | — | — | — | 1.07 | 1.28 | 1.48 |
| 45 | — | — | — | — | — | — | 1.09 | 1.30 | 1.51 |
| 48 | — | — | — | — | — | — | 1.16 | 1.38 | 1.61 |
| 50 | — | — | — | — | — | — | 1.21 | 1.44 | 1.68 |
| 53 | — | — | — | — | — | — | 1.28 | 4.53 | 1.78 |
| 56 | — | — | — | — | — | — | 1.36 | 1.62 | 1.89 |
| 60 | — | — | — | — | — | — | 1.46 | 1.74 | 2.02 |
| 63 | — | — | — | — | — | — | 1.53 | 1.83 | 2.13 |
| 65 | — | — | — | — | — | — | 1.58 | 1.89 | 2.20 |
| 70 | — | — | — | — | — | — | 1.70 | 2.03 | 2.37 |
| 75 | — | — | — | — | — | — | 1.82 | 2.18 | 2.54 |
| 外径/mm | 壁厚/mm | ||||||||
| 1.5 | 1.6 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | 3.0 | 3.2 | |
| 理论重量/（kg/m） | |||||||||
| 5 | 0.129 | 0.134 | — | — | — | — | — | — | — |
| 6 | 0.166 | 0.174 | 0.186 | 0.197 | — | — | — | — | — |
| 7 | 0.203 | 0.213 | 0.230 | 0.247 | 0.260 | 0.277 | — | — | — |
| 8 | 0.240 | 0.253 | 0.296 | 0.315 | 0.339 | — | — | — | — |
| 9 | 0.277 | 0.292 | 0.319 | 0.345 | 0.369 | 0.401 | 0.427 | — | — |
| 10 | 0.314 | 0.332 | 0.363 | 0.395 | 0.423 | 0.462 | 0.496 | 0.518 | 0.536 |
| 11 | 0.351 | 0.371 | 0.407 | 0.444 | 0.477 | 0.524 | 0.566 | 0.592 | 0.615 |
| 12 | 0.388 | 0.411 | 0.452 | 0.493 | 0.532 | 0.586 | 0.635 | 0.666 | 0.694 |
| 14 | 0.462 | 0.490 | 0.541 | 0.592 | 0.640 | 0.709 | 0.772 | 0.814 | 0.852 |
| 16 | 0.536 | 0.568 | 0.629 | 0.691 | 0.747 | 0.832 | 0.910 | 0.962 | 1.01 |
| 18 | 0.610 | 0.647 | 0.717 | 0.789 | 0.856 | 0.956 | 1.05 | 1.11 | 1.17 |
| 20 | 0.684 | 0.726 | 0.806 | 0.888 | 0.965 | 1.08 | 1.19 | 1.26 | 1.33 |
| 22 | 0.758 | 0.806 | 0.895 | 0.986 | 1.07 | 1.20 | 1.33 | 1.·41 | 1.49 |
| 25 | 0.869 | 0.925 | 1.03 | 1.13 | 1.24 | 1.39 | 1.53 | 1.63 | 1.72 |
| 28 | 0.980 | 1.04 | 1.16 | 1.28 | 1.40 | 1.57 | 1.74 | 1.85 | 1.96 |
| 29 | 1.02 | 1.08 | 1.22 | 1.33 | 1.47 | 1.63 | 1.83 | 1.92 | 2.02 |
| 30 | 1.05 | 1.12 | 1.25 | 1.38 | 1.51 | 1.70 | 1.88 | 2.00 | 2.12 |
| 32 | 1.13 | 1.20 | 1.34 | 1.48 | 1.62 | 1.82 | 2.02 | 2.15 | 2.28 |
| 34 | 1.20 | 1.28 | 1.43 | 1.58 | 1.72 | 1.94 | 2.15 | 2.29 | 2.43 |
| 36 | 1.28 | 1.36 | 1.53 | 1.68 | 1.83 | 2.07 | 2.29 | 2.44 | 2.59 |
| 38 | 1.35 | 1.44 | 1.61 | 1.78 | 1.94 | 2.19 | 2.43 | 2.59 | 2.75 |
| 40 | 1.42 | 1.52 | 1.69 | 1.87 | 2.05 | 2.31 | 2.56 | 2.74 | 2.91 |
| 42 | 1.50 | 1.60 | 1.79 | 1.97 | 2.16 | 2.44 | 2.70 | 2.89 | 3.07 |
| 44.5 | 1.59 | 1.65 | 1.88 | 2.10 | 2.29 | 2.59 | 2.89 | 3.07 | 3.25 |
| 45 | 1.61 | 1.71 | 1.91 | 2.12 | 2.32 | 2.62 | 2.91 | 3.11 | 3.31 |
| 48 | 1.72 | 1.83 | 2.05 | 2.27 | 2.48 | 2.81 | 3.11 | 3.33 | 3.54 |
| 50 | 1.79 | 1.91 | 2.14 | 2.37 | 2.59 | 2.93 | 3.25 | 3.48 | 3.70 |
| 53 | 1.91 | 2.03 | 2.27 | 2.52 | 2.76 | 3.11 | 3.46 | 3.70 | 3.94 |
| 56 | 2.02 | 2.15 | 2.40 | 2.56 | 2.92 | 3.30 | 3.66 | 3.92 | 4.17 |
| 60 | 2.16 | 2.31 | 2.58 | 2.86 | 3.13 | 3.55 | 3.94 | 4.22 | 4.49 |
| 63 | 2.27 | 2.42 | 2.71 | 3.01 | 3.30 | 3.72 | 4.15 | 4.44 | 4.73 |
| 65 | 2.35 | 2.50 | 2.80 | 3.11 | 3.40 | 3.85 | 4.29 | 4.59 | 4.89 |
| 70 | 2.53 | 2.70 | 3.02 | 3.35 | 3.68 | 4.16 | 4.63 | 4.96 | 5.28 |
| 75 | 2.71 | 2.90 | 3.24 | 3.60 | 3.95 | 4.46 | 4.97 | 5.32 | 5.68 |
| 外径/mm | 壁厚/mm | ||||||||
| 3.5 | 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.5 | 7.0 | 7.5 | |
| 理论重量/（kg/m） | |||||||||
| 5 | — | — | — | — | — | — | — | — | — |
| 6 | — | — | — | — | — | — | — | — | — |
| 7 | — | — | — | — | — | — | — | — | — |
| 8 | — | — | — | — | — | — | — | — | — |
| 9 | — | — | — | — | — | — | — | — | — |
| 10 | 0.561 | — | — | — | — | — | — | — | — |
| 11 | 0.647 | — | — | — | — | — | — | — | — |
| 12 | 0.734 | 0.789 | — | — | — | — | — | — | — |
| 14 | 0.906 | 0.986 | — | — | — | — | — | — | — |
| 16 | 1.08 | 1.18 | 1.28 | 1.35 | — | — | — | — | — |
| 18 | 1.25 | 1.38 | 1.50 | 1.60 | — | — | — | — | — |
| 20 | 1.42 | 1.58 | 1.72 | 1.82 | 1.97 | 2.07 | — | — | — |
| 22 | 1.60 | 1.77 | 1.94 | 2.10 | 2.24 | 2.37 | — | — | — |
| 25 | 1.86 | 2.07 | 2.28 | 2.47 | 2.64 | 2.81 | 2.97 | 3.11 | — |
| 28 | 2.11 | 2.37 | 2.61 | 2.84 | 3.05 | 3.26 | 3.45 | 3.68 | — |
| 29 | 2.20 | 2.47 | 2.72 | 2.96 | 3.19 | 3.40 | 3.61 | 3.80 | 3.98 |
| 30 | 2.29 | 2.56 | 2.83 | 3.08 | 3.32 | 3.55 | 3.77 | 3.97 | 4.16 |
| 32 | 2.46 | 2.76 | 3.05 | 3.33 | 3.59 | 3.85 | 4.09 | 4.32 | 4.53 |
| 34 | 2.63 | 2.96 | 3.27 | 3.58 | 3.87 | 4.14 | 4.41 | 4.66 | 4.90 |
| 36 | 2.81 | 3.16 | 3.50 | 3.82 | 4.14 | 4.44 | 4.73 | 5.01 | 5.27 |
| 38 | 2.98 | 3.35 | 3.72 | 4.07 | 4.41 | 4.74 | 5.05 | 5.35 | 5.64 |
| 40 | 3.15 | 3.55 | 3.94 | 4.32 | 4.68 | 5.03 | 5.37 | 5.70 | 6.01 |
| 42 | 3.32 | 3.75 | 4.16 | 4.56 | 4.95 | 5.33 | 5.69 | 6.04 | 6.38 |
| 44.5 | 3.54 | 4.00 | 4.44 | 4.87 | 5.29 | 5.70 | 6.06 | 6.47 | 6.84 |
| 45 | 3.58 | 4.04 | 4.49 | 4.93 | 5.36 | 5.77 | 6.17 | 6.56 | 6.94 |
| 48 | 3.84 | 4.34 | 4.83 | 5.30 | 5.76 | 6.21 | 6.65 | 7.08 | 7.49 |
| 50 | 4.01 | 4.54 | 5.05 | 5.55 | 6.04 | 6.51 | 6.97 | 7.42 | 7.86 |
| 53 | 4.27 | 4.83 | 5.38 | 5.92 | 6.44 | 6.95 | 7.45 | 7.94 | 8.42 |
| 56 | 4.53 | 5.13 | 5.71 | 6.29 | 6.85 | 7.40 | 7.93 | 8.40 | 8.97 |
| 60 | 4.88 | 5.52 | 6.16 | 6.78 | 7.39 | 7.99 | 8.58 | 9.15 | 9.71 |
| 63 | 5.13 | 5.81 | 6.49 | 7.14 | 7.77 | 8.41 | 9.04 | 9.57 | 10.23 |
| 65 | 5.31 | 6.02 | 6.71 | 7.40 | 8.07 | 8.73 | 9.38 | 10.01 | 10.65 |
| 70 | 5.74 | 6.51 | 7.27 | 8.01 | 8.75 | 9.47 | 10.18 | 10.88 | 11.56 |
| 75 | 6.17 | 7.00 | 7.82 | 8.62 | 9.41 | 10.18 | 10.96 | 11.71 | 12.48 |
| 外径/mm | 壁厚/mm | ||||||||
| 8.0 | 8.5 | 9 | 9.5 | 10 | 11 | 12 | 13 | 14 | |
| 理论重量/（kg/m） | |||||||||
| 30 | 4.34 | — | — | — | — | — | — | — | — |
| 32 | 4.74 | — | — | — | — | — | — | — | — |
| 34 | 5.13 | — | — | — | — | — | — | — | — |
| 36 | 5.52 | — | — | — | — | — | — | — | — |
| 38 | 5.92 | 6.18 | 6.44 | — | — | — | — | — | — |
| 40 | 6.31 | 6.60 | 6.88 | — | — | — | — | — | — |
| 42 | 6.71 | 7.02 | 7.32 | — | — | — | — | — | — |
| 44.5 | 7.20 | 7.55 | 7.88 | — | — | — | — | — | — |
| 45 | 7.30 | 7.65 | 7.99 | 8.32 | 8.63 | — | — | — | — |
| 48 | 7.89 | 8.28 | 8.66 | 9.02 | 9.37 | — | — | — | — |
| 50 | 8.29 | 8.70 | 9.10 | 9.49 | 9.86 | 10.59 | 11.25 | — | — |
| 53 | 8.88 | 9.33 | 9.77 | 10.19 | 10.60 | 11.39 | 12.13 | — | — |
| 56 | 9.47 | 9.96 | 10.43 | 10.90 | 11.34 | 12.21 | 13.02 | — | — |
| 60 | 10.26 | 10.80 | 11.32 | 11.83 | 12.33 | 13.29 | 14.21 | 15.07 | 15.88 |
| 65 | 11.25 | 11.84 | 12.43 | 13.00 | 13.56 | 14.65 | 15.68 | — | — |
| 70 | 12.23 | 12.89 | 13.54 | 14.17 | 14.80 | 16.01 | 17.16 | 18.27 | 19.33 |
| 75 | 13.17 | 13.91 | 14.61 | 15.30 | 15.99 | 17.31 | 18.65 | — | — |
| 外径/mm | 壁厚/mm | ||||||||
| 1.2 | 1.4 | 1.5 | 1.6 | 1.8 | 2.0 | 2.2 | 2.5 | 2.8 | |
| 理论重量/（kg/m） | |||||||||
| 80 | — | 2.71 | 2.90 | 3.09 | 3.47 | 3.84 | 4.22 | 4.77 | 5.32 |
| 85 | — | 2.88 | 3.08 | 3.29 | 3.69 | 4.09 | 4.48 | 5.08 | 5.66 |
| 90 | — | 3.05 | 3.27 | 3.49 | 3.91 | 4.34 | 4.76 | 5.39 | 6.01 |
| 95 | — | 3.21 | 3.46 | 3.68 | 4.13 | 4.59 | 5.02 | 5.70 | 6.36 |
| 100 | — | 3.40 | 3.64 | 3.88 | 4.35 | 4.83 | 5.30 | 6.00 | 6.70 |
| 110 | — | 3.74 | 4.03 | 4.28 | 4.81 | 5.32 | 5.84 | 6.62 | 7.39 |
| 120 | — | — | 4.36 | 4.66 | 5.25 | 5.83 | 6.38 | 7.24 | 8.07 |
| 125 | — | — | — | — | 5.46 | 6.06 | 6.64 | 7.54 | 8.42 |
| 130 | — | — | — | — | — | — | — | 7.86 | 8.78 |
| 140 | — | — | — | — | — | — | — | — | — |
| 150 | — | — | — | — | — | — | — | — | — |
| 外径/mm | 壁厚/mm | ||||||||
| 3.0 | 3.5 | 4.0 | 4.5 | 5.0 | 5.5 | 6.0 | 6.5 | 7.0 | |
| 理论重量/（kg/m） | |||||||||
| 80 | 5.69 | 6.60 | 7.49 | 8.37 | 9.24 | 10.07 | 10.91 | 11.75 | 12.59 |
| 85 | 6.06 | 7.04 | 7.98 | 8.93 | 9.86 | 10.75 | 11.65 | 12.55 | 13.45 |
| 90 | 6.43 | 7.47 | 8.47 | 9.49 | 10.47 | 11.42 | 12.39 | 13.35 | 14.31 |
| 95 | 6.81 | 7.90 | 8.98 | 10.04 | 11.10 | 12.14 | 13.17 | 14.19 | 15.19 |
| 100 | 7.17 | 8.32 | 9.46 | 10.59 | 11.71 | 12.77 | 13.87 | 14.95 | 16.03 |
| 110 | 7.92 | 9.19 | 10.46 | 11.70 | 12.93 | 14.19 | 15.40 | 16.60 | 17.75 |
| 120 | 8.66 | 10.06 | 11.44 | 12.93 | 14.30 | 15.51 | 16.89 | 18.20 | 19.50 |
| 125 | 9.02 | 10.50 | 11.91 | 13.37 | 14.80 | 16.15 | 17.55 | 19.02 | 20.35 |
| 130 | 9.40 | 10.92 | 12.43 | 13.92 | 15.48 | 16.88 | 18.35 | 19.80 | 21.20 |
| 140 | 10.11 | 11.80 | 13.42 | 15.05 | 16.65 | 18.24 | 19.83 | 21.40 | 22.96 |
| 150 | 10.85 | 12.65 | 14.39 | 16.11 | 17.85 | 19.55 | 21.25 | 23.00 | 24.68 |
| 160 | — | 13.53 | 15.38 | 17.25 | 19.09 | 20.96 | 22.79 | 24.60 | 26.41 |
| 170 | — | 14.31 | 16.31 | 18.35 | 20.30 | 22.31 | 24.27 | 26.21 | 28.14 |
| 180 | — | 15.20 | 17.30 | 19.50 | 21.59 | 23.67 | 25.75 | 27.81 | 29.87 |
| 190 | — | — | 18.29 | 20.60 | 22.80 | 25.02 | 27.22 | 29.41 | 31.59 |
| 200 | — | — | 19.67 | 21.65 | 24.00 | 26.38 | 28.70 | 31.02 | 33.32 |
| 外径/mm | 壁厚/mm | ||||||||
| 7.5 | 8.0 | 8.5 | 9.0 | 9.5 | 10 | 11 | 12 | 13 | |
| 理论重量/（kg/m） | |||||||||
| 80 | 13.39 | 14.15 | 14.96 | 15.71 | 16.45 | 17.22 | 18.66 | 20.10 | |
| 85 | 14.31 | 15.13 | 16.01 | 16.85 | 17.63 | 18.45 | 20.01 | 21.60 | |
| 90 | 15.22 | 16.11 | 17.05 | 17.95 | 18.79 | 19.67 | 21.43 | 23.08 | |
| 95 | 16.18 | 17.16 | 18.13 | 19.09 | 20.03 | 20.96 | 22.79 | 24.56 | |
| 100 | 17.09 | 18.09 | 19.15 | 20.15 | 21.15 | 22.19 | 24.14 | 26.04 | |
| 110 | 19.00 | 20.08 | 21.30 | 22.50 | 23.54 | 24.70 | 26.85 | 29.00 | |
| 120 | 20.85 | 22.10 | 23.40 | 24.70 | 25.89 | 27.20 | 29.57 | 31.96 | |
| 125 | 21.73 | 23.08 | 24.42 | 25.75 | 27.06 | 28.36 | 30.92 | 33.44 | |
| 130 | 22.70 | 24.10 | 25.50 | 26.90 | 28.23 | 29.70 | 32.27 | 34.92 | |
| 140 | 24.51 | 26.04 | 27.57 | 29.08 | 30.57 | 32.06 | 34.99 | 37.88 | |
| 150 | 26.36 | 28.01 | 29.66 | 31.29 | 32.91 | 34.52 | 37.71 | 40.84 | |
| 160 | 28.20 | 29.99 | 31.76 | 33.51 | 35.26 | 36.99 | 40.42 | 43.80 | |
| 170 | 30.05 | 31.96 | 33.85 | 35.73 | 37.60 | 39.46 | 43.13 | 46.76 | |
| 180 | 31.91 | 33.93 | 35.95 | 37.95 | 39.95 | 41.92 | 45.85 | 49.72 | |
| 190 | 33.72 | 35.90 | 38.04 | 40.17 | 42.28 | 44.39 | 48.56 | 52.67 | |
| 200 | 35.60 | 37.88 | 40.14 | 42.39 | 44.63 | 46.85 | 51.27 | 55.63 | |
注：1.本表乃参考 GB/T 8163—1999。
2.壁厚 ≤1mm，钢管长 1.5—7mm；壁厚 ＞1mm，钢管长 1.5~9mm。
| 外径/mm | 壁厚/mm | ||||||||||
| 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | |
| 理论重量/（kg/m） | |||||||||||
| 32 | 1.82 | 2.15 | 2.46 | 2.76 | 3.05 | 3.33 | 3.59 | 3.85 | 4.09 | 4.32 | 4.53 |
| 38 | 2.19 | 2.59 | 2.98 | 3.35 | 3.72 | 4.07 | 4.41 | 4.74 | 5.05 | 5.35 | 5.64 |
| 42 | 2.44 | 2.89 | 3.53 | 3.75 | 4.16 | 4.56 | 4.95 | 5.33 | 5.69 | 6.04 | 6.38 |
| 45 | 2.62 | 3.11 | 3.58 | 4.04 | 4.49 | 4.93 | 5.36 | 5.77 | 6.17 | 6.56 | 6.94 |
| 50 | 2.93 | 3.48 | 4.01 | 4.54 | 5.05 | 5.55 | 6.04 | 6.51 | 6.97 | 7.42 | 7.86 |
| 54 | — | 3.77 | 4.36 | 4.93 | 5.49 | 6.04 | 6.58 | 7.10 | 7.61 | 8.11 | 8.60 |
| 57 | — | 4.00 | 4.62 | 5.23 | 5.83 | 6.41 | 6.99 | 7.55 | 8.10 | 8.63 | 9.16 |
| 60 | — | 4.22 | 4.88 | 5.52 | 6.16 | 6.78 | 7.39 | 7.99 | 8.58 | 9.15 | 9.74 |
| 63.5 | — | 4.48 | 5.18 | 5.87 | 6.55 | 7.21 | 7.87 | 8.51 | 9.14 | 9.75 | 10.36 |
| 68 | — | 4.81 | 5.57 | 6.31 | 7.05 | 7.77 | 8.48 | 9.17 | 9.86 | 10.53 | 11.19 |
| 70 | — | 4.96 | 5.74 | 6.51 | 7.27 | 8.01 | 8.75 | 9.47 | 10.18 | 10.88 | 11.56 |
| 73 | — | 5.18 | 6.00 | 6.81 | 7.60 | 8.38 | 9.16 | 9.91 | 10.66 | 11.39 | 12.11 |
| 76 | — | 5.40 | 6.26 | 7.10 | 7.93 | 8.75 | 9.56 | 10.36 | 11.14 | 11.91 | 12.67 |
| 83 | — | — | 6.86 | 7.79 | 8.71 | 9.62 | 10.51 | 11.39 | 12.26 | 13.12 | 13.96 |
| 89 | — | — | 7.38 | 8.38 | 9.38 | 10.36 | 11.33 | 12.28 | 13.22 | 14.16 | 15.07 |
| 95 | — | — | 7.90 | 8.98 | 10.04 | 11.10 | 12.14 | 13.17 | 14.19 | 15.19 | 16.18 |
| 102 | — | — | 8.50 | 9.67 | 10.82 | 11.96 | 13.09 | 14.21 | 15.31 | 16.40 | 17.48 |
| 108 | — | — | — | 10.26 | 11.49 | 12.70 | 13.90 | 15.09 | 16.27 | 17.44 | 18.59 |
| 114 | — | — | — | 10.85 | 12.15 | 13.44 | 14.72 | 15.98 | 17.23 | 18.47 | 19.70 |
| 121 | — | — | — | 11.54 | 19.93 | 14.30 | 15.67 | 17.02 | 18.35 | 19.68 | 20.99 |
| 127 | — | — | — | 12.13 | 13.59 | 15.04 | 16.48 | 17.90 | 19.32 | 20.72 | 22.10 |
| 133 | — | — | — | 12.73 | 14.26 | 15.78 | 17.29 | 18.79 | 20.28 | 21.75 | 23.21 |
| 140 | — | — | — | — | 15.04 | 16.65 | 18.24 | 19.83 | 21.40 | 22.96 | 24.51 |
| 146 | — | — | — | — | 15.70 | 17.39 | 19.06 | 20.72 | 22.36 | 24.00 | 25.62 |
| 159 | — | — | — | — | 17.15 | 18.99 | 20.82 | 22.64 | 24.45 | 26.24 | 28.02 |
| 168 | — | — | — | — | — | 20.10 | 22.04 | 23.97 | 25.89 | 27.79 | 29.69 |
| 180 | — | — | — | — | — | 21.59 | 23.70 | 25.75 | 27.70 | 29.87 | 31.91 |
| 194 | — | — | — | — | — | 23.31 | 25.60 | 27.82 | 30.00 | 32.28 | 34.50 |
| 203 | — | — | — | — | — | — | — | 29.14 | 31.50 | 33.83 | 36.16 |
| 219 | — | — | — | — | — | — | — | 31.52 | 34.06 | 36.60 | 39.12 |
| 245 | — | — | — | — | — | — | — | — | 38.23 | 41.09 | 43.85 |
| 273 | — | — | — | — | — | — | — | — | 42.64 | 45.94 | 49.10 |
| 299 | — | — | — | — | — | — | — | — | — | — | 53.91 |
| 325 | — | — | — | — | — | — | — | — | — | — | 58.74 |
| 外径/mm | 壁厚/mm | ||||||||||
| 8 | 8.5 | 9 | 9.5 | 10 | 11 | 12 | 13 | 14 | 15 | ||
| 理论重量/（kg/m） | |||||||||||
| 32 | 4.74 | — | — | — | — | — | — | — | — | — | |
| 38 | 5.92 | — | — | — | — | — | — | — | — | — | |
| 42 | 6.71 | 7.02 | 7.32 | 7.60 | 7.88 | — | — | — | — | — | |
| 45 | 7.30 | 7.65 | 7.99 | 8.32 | 8.63 | — | — | — | — | — | |
| 50 | 8.29 | 8.70 | 9.10 | 9.49 | 9.86 | — | — | — | — | — | |
| 54 | 9.08 | 9.54 | 9.99 | 10.43 | 10.85 | 11.67 | — | — | — | — | |
| 57 | 9.67 | 10.17 | 10.65 | 11.13 | 11.59 | 12.48 | 13.32 | 14.11 | — | — | |
| 60 | 10.26 | 10.80 | 11.32 | 11.83 | 12.33 | 13.29 | 14.21 | 15.07 | 15.88 | ||
| 63.5 | 10.95 | 11.53 | 12.10 | 12.65 | 13.19 | 14.24 | 15.24 | 16.19 | 17.09 | ||
| 68 | 11.84 | 12.47 | 13.10 | 13.71 | 14.30 | 15.46 | 16.57 | 17.63 | 18.64 | 19.61 | |
| 70 | 12.23 | 12.89 | 13.54 | 14.17 | 14.80 | 16.01 | 17.16 | 18.27 | 19.33 | 20.35 | |
| 73 | 12.82 | 13.52 | 14.21 | 14.88 | 15.54 | 16.82 | 18.05 | 19.24 | 20.37 | 21.46 | |
| 76 | 13.42 | 14.15 | 14.87 | 15.58 | 16.28 | 17.63 | 18.94 | 20.20 | 21.41 | 22.57 | |
| 83 | 14.80 | 15.62 | 16.42 | 17.22 | 18.00 | 19.53 | 21.01 | 22.44 | 23.82 | 25.15 | |
| 89 | 15.98 | 16.87 | 17.76 | 18.63 | 19.48 | 21.16 | 22.79 | 24.37 | 25.89 | 27.37 | |
| 95 | 17.16 | 18.13 | 19.09 | 20.03 | 20.96 | 22.79 | 24.56 | 26.29 | 27.97 | 29.59 | |
| 102 | 18.55 | 19.60 | 20.64 | 21.67 | 22.69 | 24.69 | 26.53 | 28.63 | 30.38 | 32.18 | |
| 108 | 19.73 | 20.86 | 21.97 | 23.08 | 24.17 | 26.31 | 28.41 | 30.46 | 32.45 | 34.40 | |
| 114 | 20.91 | 22.12 | 23.31 | 24.48 | 25.65 | 27.94 | 30.19 | 32.38 | 34.53 | 36.62 | |
| 121 | 22.29 | 23.58 | 24.86 | 26.12 | 27.37 | 29.84 | 32.26 | 34.62 | 36.94 | 39.21 | |
| 127 | 23.48 | 24.84 | 26.19 | 27.53 | 28.85 | 31.47 | 34.03 | 36.55 | 39.01 | 41.43 | |
| 133 | 24.66 | 36.10 | 27.53 | 28.93 | 30.33 | 33.10 | 35.81 | 38.47 | 41.09 | 43.65 | |
| 140 | 26.04 | 27.57 | 29.08 | 30.57 | 32.06 | 34.99 | 37.88 | 40.72 | 43.50 | 46.24 | |
| 146 | 27.23 | 28.82 | 30.41 | 31.98 | 33.54 | 36.62 | 39.66 | 42.64 | 45.57 | 48.46 | |
| 152 | 28.41 | 30.08 | 31.74 | 33.39 | 35.02 | 38.25 | 41.43 | 44.56 | 47.65 | 50.68 | |
| 159 | 29.79 | 31.55 | 33.29 | 35.03 | 36.75 | 40.15 | 43.50 | 46.81 | 50.06 | 53.27 | |
| 168 | 31.57 | 33.43 | 35.29 | 37.13 | 38.97 | 42.59 | 46.17 | 49.69 | 53.17 | 56.60 | |
| 180 | 33.93 | 35.95 | 37.95 | 39.95 | 41.92 | 45.85 | 49.72 | 53.54 | 57.31 | 61.04 | |
| 194 | 36.70 | 28.89 | 40.06 | 43.23 | 45.38 | 49.64 | 53.86 | 58.03 | 62.15 | 66.22 | |
| 203 | 38.47 | 40.77 | 43.05 | 45.33 | 47.59 | 52.08 | 56.52 | 60.91 | 65.94 | 69.54 | |
| 219 | 41.63 | 44.12 | 46.61 | 49.08 | 51.54 | 56.43 | 61.26 | 66.04 | 70.78 | 75.46 | |
| 245 | 46.76 | 49.56 | 52.38 | 55.17 | 57.95 | 63.48 | 68.95 | 74.38 | 79.76 | 83.08 | |
| 273 | 52.28 | 55.45 | 58.60 | 61.73 | 64.86 | 71.07 | 77.24 | 83.36 | 89.42 | 95.44 | |
| 299 | 57.41 | 60.89 | 64.37 | 67.38 | 71.27 | 78.13 | 84.93 | 91.69 | 98.40 | 105.06 | |
| 325 | 62.54 | 66.35 | 70.14 | 73.92 | 77.68 | 85.18 | 92.63 | 100.03 | 107.38 | 114.68 | |
| 351 | 67.67 | 71.80 | 75.91 | 80.01 | 84.10 | 92.23 | 100.32 | 108.36 | 116.35 | 124.29 | |
| 377 | — | — | 81.68 | 86.10 | 90.51 | 99.29 | 108.02 | 117.00 | 125.33 | 133.91 | |
| 402 | — | — | 87.21 | 91.95 | 96.67 | 106.06 | 115.41 | 124.71 | 133.94 | 143.15 | |
| 426 | — | — | 92.55 | 97.57 | 102.59 | 112.58 | 122.52 | 132.41 | 142.25 | 152.04 | |
| 450 | — | — | 97.87 | 103.20 | 108.50 | 119.08 | 130.61 | 140.09 | 150.52 | 160.90 | |
| 480 | — | — | 104.52 | 110.22 | 115.90 | 127.22 | 139.49 | 149.71 | 160.88 | 172.00 | |
| 500 | — | — | 108.96 | 114.91 | 120.83 | 132.65 | 145.41 | 156.12 | 167.79 | 179.40 | |
| 530 | — | — | 115.62 | 121.94 | 128.23 | 140.78 | 154.29 | 165.74 | 178.14 | 190.50 | |
| 560 | — | — | 122.28 | 128.97 | 135.63 | 148.92 | 163.16 | 175.36 | 188.50 | 201.60 | |
| 600 | — | — | 131.17 | 138.34 | 145.50 | 159.78 | 175.00 | 188.18 | 202.31 | 216.39 | |
| 630 | — | — | 137.81 | 145.36 | 152.89 | 167.91 | 183.88 | 197.80 | 212.67 | 227.49 | |
| 外径/mm | 壁厚/mm | ||||||||||
| 16 | 17 | 18 | 19 | 20 | 22 | 25 | 28 | ||||
| 理论重量/（kg/m） | |||||||||||
| 57 | — | — | — | — | — | — | — | — | |||
| 68 | 20.52 | — | — | — | — | — | — | — | |||
| 70 | 21.31 | — | — | — | — | — | — | — | |||
| 73 | 22.49 | 23.48 | 24.41 | 25.30 | — | — | — | — | |||
| 76 | 23.68 | 24.74 | 25.75 | 26.71 | — | — | — | — | |||
| 83 | 26.44 | 27.67 | 28.85 | 29.99 | — | — | — | — | |||
| 89 | 28.80 | 30.19 | 31.52 | 32.80 | 34.03 | 36.35 | — | — | |||
| 95 | 31.17 | 32.70 | 34.18 | 35.61 | 36.99 | 39.61 | — | — | |||
| 102 | 33.93 | 35.64 | 37.29 | 38.89 | 40.44 | 43.40 | — | — | |||
| 108 | 36.30 | 38.15 | 39.95 | 41.70 | 43.40 | 46.66 | 51.17 | 55.24 | |||
| 114 | 38.67 | 40.67 | 42.62 | 44.51 | 46.36 | 49.91 | 54.87 | 59.39 | |||
| 121 | 41.43 | 43.60 | 45.72 | 47.79 | 49.82 | 53.71 | 59.19 | 64.22 | |||
| 127 | 43.80 | 46.12 | 48.39 | 50.61 | 52.78 | 56.97 | 62.89 | 68.36 | |||
| 133 | 46.17 | 48.63 | 51.05 | 53.42 | 55.73 | 60.22 | 66.59 | 72.50 | |||
| 140 | 48.93 | 51.57 | 54.16 | 56.70 | 59.19 | 64.02 | 70.90 | 77.34 | |||
| 146 | 51.30 | 54.08 | 56.82 | 59.51 | 62.15 | 67.27 | 74.60 | 81.48 | |||
| 152 | 53.66 | 56.60 | 59.48 | 62.32 | 65.11 | 70.59 | 78.30 | 85.62 | |||
| 159 | 56.43 | 59.53 | 62.59 | 65.60 | 68.56 | 74.33 | 82.62 | 90.46 | |||
| 168 | 59.98 | 63.31 | 66.59 | 69.82 | 73.00 | 73.21 | 88.16 | 96.67 | |||
| 180 | 64.71 | 68.34 | 71.91 | 75.44 | 78.92 | 85.72 | 95.56 | 104.96 | |||
| 194 | 70.24 | 74.21 | 78.13 | 82.00 | 85.28 | 93.32 | 104.19 | 114.63 | |||
| 203 | 73.78 | 77.97 | 81.12 | 86.21 | 90.26 | 98.20 | 109.74 | 120.83 | |||
| 219 | 80.10 | 84.69 | 89.23 | 93.71 | 98.15 | 106.88 | 119.61 | 131.89 | |||
| 245 | 90.36 | 95.59 | 100.77 | 105.90 | 110.98 | 120.99 | 135.64 | 149.84 | |||
| 273 | 101.41 | 107.33 | 113.20 | 119.02 | 124.79 | 136.18 | 152.90 | 169.18 | |||
| 299 | 111.67 | 118.23 | 124.74 | 131.20 | 137.61 | 150.29 | 168.93 | 187.13 | |||
| 325 | 121.93 | 129.13 | 136.28 | 143.38 | 150.44 | 164.39 | 184.96 | 205.09 | |||
| 351 | 132.19 | 140.03 | 147.82 | 155.56 | 163.26 | 178.50 | 200.99 | 233.04 | |||
| 377 | 142.44 | 150.93 | 159.36 | 167.75 | 176.08 | 192.61 | 217.02 | 240.99 | |||
| 402 | 150.30 | 161.40 | 170.45 | 179.45 | 188.40 | 206.16 | 232.42 | 258.24 | |||
| 426 | 161.78 | 171.47 | 181.11 | 190.71 | 200.25 | 219.19 | 247.23 | 274.83 | |||
| 450 | 171.24 | 181.52 | 191.76 | 201.94 | 212.08 | 232.20 | 262.01 | 291.38 | |||
| 480 | 183.08 | 194.10 | 205.07 | 216.00 | 226.87 | 248.47 | 280.51 | 312.10 | |||
| 500 | 190.97 | 202.48 | 213.95 | 225.37 | 236.74 | 259.32 | 292.84 | 325.91 | |||
| 530 | 202.80 | 215.06 | 227.27 | 239.42 | 251.53 | 275.60 | 317.50 | 346.62 | |||
| 560 | 214.64 | 227.64 | 240.58 | 253.48 | 266.33 | 291.88 | — | — | |||
| 600 | 230.42 | 244.40 | 258.34 | 272.22 | 286.06 | 291.88 | — | — | |||
| 630 | 242.26 | 256.98 | 271.66 | 286.28 | 300.85 | 329.85 | — | — | |||
| 外径/mm | 壁厚/mm | ||||||||||
| 30 | 32 | 36 | 40 | 50 | 56 | 60 | 63 | 70 | 75 | ||
| 理论重量/（kg/m） | |||||||||||
| 127 | 71.26 | — | — | — | — | — | — | — | — | — | |
| 133 | 76.20 | 79.71 | — | — | — | — | — | — | — | — | |
| 140 | 81.38 | 85.23 | 92.33 | — | — | — | — | — | — | — | |
| 146 | 85.82 | 89.97 | 97.66 | — | — | — | — | — | — | — | |
| 152 | 90.26 | 94.70 | 102.99 | — | — | — | — | — | — | — | |
| 159 | 95.44 | 100.22 | 109.20 | — | — | — | — | — | — | — | |
| 168 | 102.10 | 107.33 | 117.19 | 126.27 | — | — | — | — | — | — | |
| 180 | 110.98 | 116.80 | 127.85 | 138.10 | — | — | — | — | — | — | |
| 194 | 121.33 | 127.85 | 140.27 | 151.91 | — | — | — | — | — | — | |
| 203 | 127.99 | 134.94 | 148.26 | 160.78 | — | — | — | — | — | — | |
| 219 | 139.83 | 147.57 | 162.47 | 176.58 | — | — | — | — | — | — | |
| 245 | 159.07 | 168.09 | 185.55 | 202.22 | — | — | — | — | — | — | |
| 273 | 179.78 | 190.19 | 185.55 | 202.22 | — | — | — | — | — | — | |
| 299 | 199.02 | 210.71 | 233.50 | 255.49 | — | — | — | — | — | — | |
| 325 | 218.25 | 231.23 | 256.53 | 281.14 | — | — | — | — | — | — | |
| 351 | 237.49 | 251.74 | 279.66 | 306.76 | — | — | — | — | — | — | |
| 377 | 256.73 | 272.26 | 302.77 | 332.44 | — | — | — | — | — | — | |
| 402 | 275.21 | 291.18 | 324.92 | 357.08 | — | — | — | — | — | — | |
| 426 | 292.98 | 310.93 | 346.27 | 380.77 | — | — | — | — | — | — | |
| 450 | 310.72 | 329.84 | 307.53 | 404.42 | — | — | — | — | — | — | |
| 480 | 332.91 | 353.52 | 394.17 | 463.01 | — | — | — | — | — | — | |
| 500 | 347.71 | 369.30 | 411.92 | 453.74 | — | — | — | — | — | — | |
| 530 | 369.90 | 392.92 | 438.55 | 483.34 | — | — | — | — | — | — | |
| 203 | — | — | — | — | 188.65 | — | — | — | — | — | |
| 219 | — | — | — | — | 208.38 | — | — | — | — | — | |
| 245 | — | — | — | — | 240.44 | — | — | — | — | — | |
| 273 | — | — | — | — | 274.96 | — | — | — | — | — | |
| 299 | — | — | — | — | 307.02 | 335.57 | 353.62 | 366.64 | 395.30 | 414.29 | |
| 325 | — | — | — | — | 339.10 | 371.49 | 392.09 | 407.04 | 440.34 | 462.28 | |
| 351 | — | — | — | — | 371.16 | 407.40 | 430.59 | 447.43 | 485.24 | 510.46 | |
| 377 | — | — | — | — | 403.22 | 442.30 | 469.06 | 484.82 | 529.98 | 558.55 | |
| 402 | — | — | — | — | 434.01 | 477.81 | 506.02 | 526.66 | 573.10 | 604.79 | |
| 426 | — | — | — | — | 463.64 | 510.97 | 541.57 | 560.47 | 614.56 | 649.21 | |
| 450 | — | — | — | — | 493.20 | 544.10 | 577.04 | 601.24 | 655.96 | 693.56 | |
| 480 | — | — | — | — | 530.19 | 585.53 | 621.43 | 632.31 | 707.24 | 749.05 | |
| 500 | — | — | — | — | 554.85 | 613.15 | 651.02 | 678.91 | 742.27 | 786.04 | |
| 530 | — | — | — | — | 591.84 | 654.58 | 695.41 | 725.52 | 794.05 | 841.52 | |
注:钢管长为 3~12.5m。
| 外径/mm | 壁厚/mm | |||||||||||||||||
| 0.25 | 0.30 | 0.40 | 0.50 | 0.60 | 0.80 | 1.0 | 1.2 | 1.4 | 1.5 | 1.6 | 1.8 | 2.0 | 2.2（2.3） | 2.5（2.6） | 2.8 | |||
| 系列 1 | 系列 2 | 系列 3 | 单位长度理论质量/（kg/m） | |||||||||||||||
| 6 | 0.035 | 0.042 | 0.055 | 0.068 | 0.080 | 0.103 | 0.123 | 0.142 | 0.159 | 0.166 | 0.174 | 0.186 | 0.197 | |||||
| 7 | 0.042 | 0.050 | 0.065 | 0.080 | 0.095 | 0.122 | 0.148 | 0.172 | 0.193 | 0.203 | 0.213 | 0.231 | 0.247 | 0.260 | 0.277 | |||
| 8 | 0.048 | 0.057 | 0.075 | 0.092 | 0.110 | 0.142 | 0.173 | 0.201 | 0.228 | 0.240 | 0.253 | 0.275 | 0.296 | 0.315 | 0.339 | |||
| 9 | 0.054 | 0.064 | 0.085 | 0.105 | 0.124 | 0.162 | 0.197 | 0.231 | 0.262 | 0.277 | 0.292 | 0.320 | 0.345 | 0.369 | 0.401 | 0.428 | ||
| 10 | 0.060 | 0.072 | 0.095 | 0.117 | 0.139 | 0.182 | 0.222 | 0.261 | 0.097 | 0.314 | 0.332 | 0.364 | 0.395 | 0.423 | 0.462 | 0.497 | ||
| 11 | 0.066 | 0.079 | 0.105 | 0.129 | 0.154 | 0.201 | 0.247 | 0.290 | 0.331 | 0.351 | 0.371 | 0.408 | 0.444 | 0.477 | 0.524 | 0.566 | ||
| 12 | 0.072 | 0.087 | 0.115 | 0.142 | 0.169 | 0.221 | 0.271 | 0.320 | 0.366 | 0.388 | 0.410 | 0.453 | 0.493 | 0.532 | 0.586 | 0.635 | ||
| 13 | 0.079 | 0.094 | 0.124 | 0.154 | 0.184 | 0.241 | 0.296 | 0.349 | 0.400 | 0.425 | 0.450 | 0.497 | 0.543 | 0.596 | 0.647 | 0.704 | ||
| 13.5 | 0.082 | 0.098 | 0.129 | 0.160 | 0.191 | 0.251 | 0.308 | 0.364 | 0.418 | 0.444 | 0.470 | 0.519 | 0.567 | 0.613 | 0.678 | 0.739 | ||
| 14 | 0.085 | 0.101 | 0.134 | 0.166 | 0.198 | 0.260 | 0.321 | 0.179 | 0.435 | 0.462 | 0.490 | 0.542 | 0.592 | 0.640 | 0.709 | 0.773 | ||
| 16 | 0.197 | 0.116 | 0.154 | 0.191 | 0.228 | 0.300 | 0.370 | 0.438 | 0.504 | 0.536 | 0.568 | 0.630 | 0.691 | 0.749 | 0.832 | 0.91 | ||
| 17 | 0.103 | 0.124 | 0.164 | 0.203 | 0.243 | 0.320 | 0.395 | 0.468 | 0.539 | 0.573 | 0.608 | 0.675 | 0.740 | 0.803 | 0.894 | 0.98 | ||
| 18 | 0.109 | 0.131 | 0.174 | 0.216 | 0.258 | 0.340 | 0.419 | 0.497 | 0.573 | 0.610 | 0.647 | 0.719 | 0.789 | 0.857 | 0.956 | 1.05 | ||
| 19 | 0.115 | 0.138 | 0.183 | 0.228 | 0.272 | 0.359 | 0.444 | 0.527 | 0.608 | 0.647 | 0.687 | 0.763 | 0.838 | 0.911 | 1.02 | 1.12 | ||
| 20 | 0.122 | 0.146 | 0.193 | 0.240 | 0.287 | 0.379 | 0.469 | 0.556 | 0.642 | 0.684 | 0.726 | 0.808 | 0.888 | 0.966 | 1.08 | 1.19 | ||
| 21 | 0.203 | 0.253 | 0.302 | 0.399 | 0.493 | 0.586 | 0.677 | 0.721 | 0.765 | 0.852 | 0.937 | 1.02 | 1.14 | 1.26 | ||||
| 22 | 0.212 | 0.265 | 0.317 | 0.418 | 0.518 | 0.616 | 0.711 | 0.758 | 0.805 | 0.897 | 0.986 | 1.07 | 1.20 | 1.33 | ||||
| 25 | 0.242 | 0.302 | 0.361 | 0.477 | 0.592 | 0.704 | 0.815 | 0.869 | 0.923 | 1.03 | 1.13 | 1.24 | 1.39 | 1.53 | ||||
| 25.4 | 0.247 | 0.307 | 0.367 | 0.485 | 0.602 | 0.714 | 0.829 | 0.884 | 0.939 | 1.05 | 1.15 | 1.26 | 1.41 | 1.56 | ||||
| 27 | 0.262 | 0.327 | 0.391 | 0.517 | 0.641 | 0.763 | 0.884 | 0.943 | 1.00 | 1.13 | 1.23 | 1.34 | 1.51 | 1.67 | ||||
| 28 | 0.272 | 0.339 | 0.406 | 0.537 | 0.666 | 0.793 | 0.918 | 0.98 | 1.04 | 1.16 | 1.28 | 1.40 | 1.57 | 1.88 | ||||
| 30 | 0.292 | 0.364 | 0.435 | 0.576 | 0.715 | 0.852 | 0.987 | 1.05 | 1.12 | 1.25 | 1.38 | 1.51 | 1.70 | 1.88 | ||||
| 32 | 0.311 | 0.388 | 0.465 | 0.616 | 0.765 | 0.911 | 1.056 | 1.13 | 1.20 | 1.34 | 1.48 | 1.62 | 1.82 | 2.02 | ||||
| 34 | 0.331 | 0.413 | 0.494 | 0.655 | 0.814 | 0.971 | 1.125 | 1.20 | 1.28 | 1043 | 1.58 | 1.72 | 1.94 | 2.15 | ||||
| 35 | 0.341 | 0.425 | 0.509 | 0.675 | 0.838 | 1.000 | 1.160 | 1.24 | 1.322 | 1.47 | 1.63 | 1.78 | 2.00 | 2.22 | ||||
| 38 | 0.370 | 0.462 | 0.553 | 0.734 | 0.912 | 1.089 | 1.26 | 1.35 | 1.44 | 1.61 | 1.78 | 1.94 | 2.19 | 2.43 | ||||
| 40 | 0.390 | 0.487 | 0.583 | 0.774 | 0.962 | 1.148 | 1.33 | 1.42 | 4.52 | 1.69 | 1.87 | 2.05 | 2.31 | 2.57 | ||||
| 42 | 1.01 | 1.21 | 1.40 | 1.50 | 1.60 | 1.79 | 1.97 | 2.16 | 2.44 | 2.71 | ||||||||
| 45 | 1.09 | 1.30 | 1.51 | 1.61 | 1.71 | 1.92 | 2.12 | 2.32 | 2.62 | 2.91 | ||||||||
| 48 | 1.16 | 1.39 | 1.61 | 1.72 | 1.83 | 2.05 | 2.27 | 2.48 | 2.81 | 3.12 | ||||||||
| 51 | 1.23 | 1.47 | 1.71 | 1.83 | 1.95 | 2.18 | 2.42 | 2.65 | 2.99 | 3.33 | ||||||||
| 54 | 1.31 | 1.56 | 1.82 | 1.94 | 2.07 | 2.32 | 2.56 | 2.81 | 3.18 | 3.54 | ||||||||
| 57 | 1.38 | 1.65 | 1.95 | 2.05 | 2.19 | 2.45 | 2.71 | 2.97 | 3.36 | 3.74 | ||||||||
| 60 | 1.46 | 1.74 | 2.02 | 2.16 | 2.31 | 2.58 | 2.86 | 3.14 | 3.55 | 3.95 | ||||||||
| 63 | 1.53 | 1.83 | 2.13 | 2.27 | 2.42 | 2.72 | 3.01 | 3.30 | 3.73 | 4.16 | ||||||||
| 65 | 1.58 | 1.89 | 2.20 | 2.35 | 2.50 | 2.81 | 3.11 | 3.41 | 3.85 | 4.29 | ||||||||
| 68 | 1.65 | 1.98 | 2.30 | 2.46 | 2.62 | 2.94 | 3.26 | 3.57 | 4.04 | 4.50 | ||||||||
| 70 | 1.70 | 2.04 | 2.37 | 2.53 | 2.70 | 3.03 | 3.35 | 3.68 | 4.16 | 4.64 | ||||||||
| 73 | 1.78 | 2.12 | 2.47 | 2.64 | 2.82 | .316 | 3.50 | 3.84 | 4.35 | 4.85 | ||||||||
| 76 | 1.85 | 2.12 | 2.58 | 2.76 | 2.94 | 3.29 | 3.65 | 4.00 | 4.53 | 5.05 | ||||||||
| 77 | 2.61 | 2.79 | 2.98 | 3.34 | 3.70 | 4.06 | 4.59 | 5.12 | ||||||||||
| 80 | 2.71 | 2.90 | 3.09 | 3.47 | 3.85 | 4.22 | 4.78 | 5.33 | ||||||||||
| 外径/mm | 壁厚/mm | |||||||||||||||||
| （2.9）3.0 | 3.2 | 3.5（3.6） | 4.0 | 4.5 | 5.0 | （5.4）5.5 | 6.0 | （6.3）6.5 | 7.0（7.1） | 7.5 | 8.0 | 8.5 | （8.8）9.0 | 9.5 | 10 | |||
| 系列 1 | 系列 2 | 系列 3 | 单位长度理论质量/（kg/m） | |||||||||||||||
| 83 | 5.92 | 6.30 | 6.86 | 7.79 | 8.71 | 9.62 | 10.51 | 11.39 | 12.26 | 13.12 | 13.96 | 14.80 | 15.62 | 16.42 | 17.22 | 18.00 | ||
| 85 | 6.07 | 6.46 | 7.04 | 7.99 | 8.93 | 9.86 | 10.78 | 11.69 | 12.58 | 13.46 | 14.33 | 15.19 | 16.04 | 16.87 | 17.69 | 18.49 | ||
| 89 | 6.36 | 6.77 | 7.38 | 8.38 | 9.38 | 10.36 | 11.33 | 12.28 | 13.22 | 14.16 | 15.07 | 15.98 | 16.87 | 17.76 | 18.63 | 19.48 | ||
| 95 | 6.81 | 7.24 | 7.90 | 8.98 | 10.04 | 11.10 | 12.14 | 13.17 | 14.19 | 15.19 | 16.18 | 17.16 | 18.13 | 19.09 | 20.03 | 20.96 | ||
| 102 | 7.32 | 7.80 | 8.50 | 9.67 | 10.82 | 11.96 | 13.09 | 14.21 | 15.31 | 16.40 | 17.48 | 18.55 | 19.60 | 20.64 | 21.67 | 22.69 | ||
| 108 | 7.77 | 8.27 | 9.02 | 10.26 | 11.49 | 12.70 | 13.90 | 15.09 | 16.27 | 17.44 | 18.59 | 19.73 | 20.86 | 21.97 | 23.08 | 24.17 | ||
| 114 | 27.94 | 30.19 | 32.38 | 34.52 | 36.62 | 38.67 | 40.66 | 42.61 | 44.51 | 46.36 | 49.91 | 53.27 | 54.87 | 56.42 | 59.38 | 62.15 | ||
| 121 | 29.84 | 32.26 | 34.62 | 36.94 | 39.21 | 41.43 | 43.60 | 45.72 | 47.79 | 49.81 | 53.71 | 57.41 | 59.18 | 60.91 | 64.21 | 67.83 | ||
| 127 | 31.47 | 34.03 | 36.55 | 39.01 | 41.13 | 43.80 | 46.12 | 48.38 | 50.60 | 52.77 | 56.96 | 60.96 | 62.88 | 64.76 | 68.36 | 71.76 | ||
| 133 | 33.10 | 35.81 | 38.47 | 41.08 | 43.65 | 46.16 | 48.63 | 51.05 | 53.41 | 55.73 | 60.22 | 64.51 | 66.58 | 68.60 | 72.50 | 76.20 | ||
| 140 | 34.99 | 37.88 | 40.71 | 43.50 | 46.24 | 48.93 | 51.56 | 54.15 | 56.63 | 59.18 | 64.02 | 68.65 | 70.90 | 73.09 | 77.33 | 81.38 | ||
| 142 | 35.54 | 38.47 | 41.36 | 44.19 | 46.98 | 49.72 | 52.41 | 55.04 | 47.36 | 60.17 | 65.11 | 68.84 | 72.13 | 74.38 | 78.72 | 82.86 | ||
| 146 | 36.62 | 39.66 | 42.64 | 45.57 | 48.46 | 51.29 | 54.08 | 56.82 | 59.50 | 62.14 | 67.27 | 72.20 | 74.60 | 76.94 | 81.48 | 85.82 | ||
| 152 | 38.25 | 41.43 | 44.56 | 47.64 | 50.68 | 53.66 | 56.59 | 59.48 | 62.32 | 65.10 | 70.53 | 75.76 | 78.30 | 80.79 | 85.62 | 90.26 | ||
| 159 | 40.15 | 43.50 | 46.80 | 50.06 | 53.27 | 56.42 | 59.53 | 62.59 | 65.60 | 68.55 | 74.33 | 79.90 | 82.61 | 85.27 | 90.45 | 95.43 | ||
| 168 | 42.59 | 46.17 | 49.69 | 53.17 | 56.59 | 59.97 | 63.30 | 66.58 | 69.81 | 72.99 | 79.21 | 85.22 | 88.16 | 91.04 | 96.67 | 102.09 | ||
| 180 | 45.84 | 49.72 | 53.54 | 57.31 | 61.03 | 64.71 | 68.33 | 71.91 | 75.43 | 78.91 | 85.72 | 92.33 | 95.56 | 98.74 | 104.95 | 110.97 | ||
| 194 | 49.64 | 53.86 | 58.02 | 62.14 | 66.21 | 70.23 | 74.02 | 78.12 | 81.99 | 85.82 | 93.31 | 100.61 | 104.19 | 107.71 | 114.62 | 121.33 | ||
| 203 | 52.08 | 56.52 | 60.91 | 65.25 | 69.54 | 73.78 | 77.97 | 82.12 | 86.21 | 90.26 | 98.20 | 105.94 | 109.74 | 113.49 | 120.83 | 127.99 | ||
| 219 | 56.42 | 61.26 | 66.04 | 70.77 | 75.46 | 80.10 | 84.68 | 89.22 | 93.71 | 98.15 | 106.88 | 115.41 | 119.60 | 123.74 | 131.88 | 139.82 | ||
| 245 | 63.48 | 68.95 | 74.37 | 79375 | 83.08 | 90.35 | 95.58 | 100.76 | 105.89 | 110.97 | 120.98 | 130.80 | 135.63 | 140.41 | 149.83 | 159.06 | ||
| 273 | 71.07 | 77.24 | 83.35 | 89.42 | 95.43 | 101.40 | 107.23 | 113.19 | 119.01 | 124.78 | 136.17 | 147.37 | 152.89 | 158.37 | 169.17 | 179.77 | ||
| 299 | 78.13 | 84.93 | 91.69 | 98.39 | 105.05 | 111.68 | 118.22 | 124.73 | 131.19 | 137.60 | 150.28 | 162.76 | 168.92 | 175.04 | 187.12 | 199.01 | ||
| 325 | 85.18 | 92.63 | 100.02 | 107.37 | 114.67 | 121.92 | 129.12 | 136.27 | 143.37 | 150.43 | 164.38 | 178.14 | 184.95 | 191.71 | 205.07 | 218.24 | ||
| 340 | 89.25 | 97.07 | 104.84 | 112.56 | 120.22 | 127.85 | 135.42 | 142.94 | 150.41 | 157.83 | 172.53 | 187.03 | 194.21 | 201.34 | 215.44 | 229.35 | ||
| 351 | 92.23 | 100.32 | 108.36 | 116.35 | 124.29 | 132.18 | 140.02 | 147.81 | 155.56 | 163.25 | 178.49 | 193.53 | 200.98 | 208.38 | 223.04 | 237.48 | ||
| 356 | 93.59 | 101.80 | 109.97 | 118.08 | 126.14 | 134.16 | 142.12 | 150.04 | 157.91 | 165.72 | 181.21 | 196.50 | 204.07 | 211.60 | 226.49 | 241.19 | ||
| 377 | 99.28 | 108.02 | 116.69 | 125.32 | 133.90 | 142.44 | 150.92 | 159.35 | 167.74 | 176.07 | 192.59 | 208.92 | 217.01 | 225.05 | 240.98 | 256.71 | ||
| 402 | 106.06 | 115.41 | 124.71 | 133.95 | 143.15 | 152.30 | 161.40 | 170.45 | 179.45 | 188.40 | 206.16 | 233.72 | 232.42 | 241.08 | 258.24 | 275.21 | ||
| 406 | 107.15 | 116.60 | 126.00 | 135.34 | 144.64 | 153.89 | 163.09 | 172.24 | 181.34 | 190.39 | 208.34 | 226.10 | 234.90 | 243.66 | 261.02 | 278.18 | ||
| 426 | 112.58 | 122.52 | 132.40 | 142.24 | 152.03 | 161.77 | 171.46 | 181.10 | 190.70 | 200.24 | 219.18 | 237.92 | 247.22 | 256.46 | 274.81 | 292.96 | ||
| 450 | 119.05 | 130.61 | 140.09 | 150.52 | 160.91 | 171.24 | 181.52 | 191.76 | 201.94 | 212.08 | 232.20 | 252.12 | 262.01 | 271.85 | 291.38 | 310.72 | ||
| 457 | 120.99 | 131.68 | 142.35 | 152.95 | 163.51 | 174.01 | 187.47 | 194.77 | 205.23 | 215.54 | 236.01 | 256.28 | 266.34 | 276.36 | 296.23 | 315.91 | ||
| 480 | 127.22 | 139.49 | 149.71 | 160.88 | 172.00 | 183.08 | 194.10 | 205.07 | 216.00 | 226.37 | 248.47 | 269.88 | 280.51 | 291.09 | 312.10 | 332.91 | ||
| 500 | 132.65 | 145.41 | 156.12 | 167.79 | 179.40 | 190.77 | 202.48 | 213.95 | 225.37 | 236.74 | 259.32 | 281.72 | 292.84 | 303.91 | 325.91 | 347.91 | ||
| 508 | 134.82 | 146.79 | 158.70 | 170.56 | 182.37 | 194.13 | 205.85 | 217.51 | 229.13 | 240.70 | 263.68 | 286.47 | 297.79 | 309.06 | 331.45 | 253.65 | ||
| 530 | 140.78 | 153.29 | 165.74 | 178.14 | 190.50 | 202.80 | 215.06 | 227.27 | 239.42 | 251.53 | 275.60 | 299.47 | 311.33 | 323.14 | 346.62 | 369.90 | ||
| 560 | 148.92 | 163.13 | 175.36 | 188.50 | 201.60 | 214.64 | 227.64 | 240.58 | 253.48 | 266.33 | 291.88 | 317.23 | 329.85 | 342.40 | 367.36 | 392.12 | ||
| 610 | 162.49 | 176.97 | 191.40 | 205.78 | 220.10 | 234.38 | 248.61 | 262.79 | 276.92 | 291.01 | 319.02 | 346.84 | 360.67 | 374.46 | 401.88 | 429.11 | ||
| 630 | 167.91 | 183.88 | 197.80 | 212.67 | 227.49 | 242.26 | 256.98 | 271.65 | 286.28 | 300.85 | 239.85 | 235.66 | 373.00 | 387.28 | 415.69 | 443.91 | ||
| 660 | 176.06 | 191.77 | 207.43 | 223.04 | 238.60 | 254.11 | 269.57 | 284.99 | 300.35 | 315.67 | 346.15 | 376.43 | 391.50 | 406.52 | 436.41 | 466.10 | ||
注：壁厚中括号内的数据是选用。
2）化肥用高压无缝钢管：主要用于保送介质为合成按氨料气（氢与氮）及氨、甲醇、尿素等；压力为 22MPa、32MPa，温度为 -40~400℃ 的化工原料介质的管理，规范为 GB6479—2000《高压化肥设备用无缝钢管》。
3）石油裂化用无缝钢管：主要用于石油精炼厂的炉管、热交流器及其管道，规范为 GB9948—2006《石油裂化用无缝钢管》。
4）不锈耐酸无缝钢管：主要用于化工、石油、机械用管道，特别适用于保送强腐蚀性介质、体温或高温介质、规范为 GB/T 14976-2002《流体保送用不锈钢无缝钢管》。
无缝钢管也可分为普通无缝钢管与专业无缝钢管两种，见表 2-4。
5）焊接钢管：主要用于公称压力 ≤1.6MPa 的官道上，因其管壁纵向有一条焊缝，故称之为焊接钢管。它可分为低压流体保送用焊接钢管（GB/T 3091—2008，见表 2-5）和螺旋缝焊接钢管、钢板卷制直缝焊接钢管。螺旋缝焊接钢管适用于水、污水、空气、采暖蒸汽等常温低压流体的保送，螺旋缝埋弧焊钢管的常用规格（SY/T 5037-2000）见表 2-6。
| 公称口径/mm | 公称外径/mm | 普通钢管 | 加厚钢管 | ||
| 公称壁厚/mm | 理论质量/（kg/m） | 公称壁厚/mm | 理论质量/（kg/m） | ||
| 6 | 10.2 | 2.0 | 0.40 | 2.5 | 0.47 |
| 8 | 13.4 | 2.5 | 0.68 | 2.8 | 0.74 |
| 10 | 17.2 | 2.5 | 0.91 | 2.8 | 0.99 |
| 15 | 21.3 | 2.8 | 1.28 | 3.5 | 1.54 |
| 20 | 26.9 | 2.8 | 1.66 | 3.5 | 2.02 |
| 25 | 33.7 | 3.2 | 2.41 | 4.0 | 2.93 |
| 32 | 42.4 | 3.5 | 3.36 | 4.0 | 3.79 |
| 40 | 48.3 | 3.5 | 3.87 | 4.5 | 4.86 |
| 50 | 60.3 | 3.8 | 5.29 | 4.5 | 6.19 |
| 65 | 76.1 | 4.0 | 7.11 | 4.5 | 7.95 |
| 80 | 88.9 | 4.0 | 8.38 | 5.0 | 10.35 |
| 100 | 114.3 | 4.0 | 10.88 | 5.0 | 13.48 |
| 125 | 139.7 | 4.0 | 13.39 | 5.5 | 18.20 |
| 150 | 168.3 | 4.5 | 18.18 | 6.0 | 24.02 |
| 公称外径/mm | 公称壁厚/mm | ||||||||||||||
| 5 | 5.4 | 5.6 | 6 | 6.3 | 7.1 | 8 | 8.8 | 10 | 11 | 12.5 | 14.2 | 16 | 17.5 | 20 | |
| 理论质量/（kg/m） | |||||||||||||||
| 273 | 33.05 | 35.64 | 36.93 | 39.51 | 41.44 | 46.56 | 52.28 | 57.34 | 64.86 | ||||||
| 323.9 | 39.32 | 42.42 | 43.96 | 47.04 | 49.34 | 55.47 | 62.32 | 68.38 | 77.41 | ||||||
| 355.6 | 43.23 | 46.64 | 48.34 | 51.73 | 54.27 | 61.02 | 68.58 | 75.26 | 85.23 | ||||||
| （377） | 45.87 | 49.49 | 51.29 | 54.90 | 57.59 | 64.77 | 72.80 | 79.91 | 90.51 | ||||||
| 406.4 | 49.50 | 53.40 | 55.35 | 59.25 | 62.16 | 69.92 | 78.60 | 86.29 | 97.76 | 107.26 | |||||
| （426） | 51.91 | 56.01 | 58.06 | 62.15 | 65.21 | 73.35 | 82.47 | 90.54 | 102.59 | 112.58 | |||||
| 457 | 55.73 | 60.14 | 62.34 | 66.73 | 70.02 | 78.78 | 88.58 | 97.27 | 110.24 | 120.99 | 137.03 | ||||
| 508 | 69.38 | 74.28 | 77.95 | 87.71 | 98.65 | 108.34 | 122.81 | 134.82 | 152.75 | ||||||
| （529） | 72.28 | 77.39 | 81.21 | 91.38 | 102.79 | 112.89 | 127.99 | 140.52 | 159.22 | ||||||
| 559 | 76.43 | 81.83 | 85.87 | 96.64 | 108.71 | 119.41 | 135.39 | 148.66 | 168.47 | ||||||
| 610 | 89.37 | 93.80 | 105.57 | 118.77 | 130.47 | 147.97 | 162.49 | 184.19 | |||||||
| （630） | 92.33 | 96.90 | 109.07 | 122.72 | 134.81 | 152.90 | 167.92 | 190.36 | |||||||
| 660 | 96.77 | 101.56 | 114.32 | 128.63 | 141.32 | 160.30 | 176.06 | 199.6 | 226.15 | ||||||
| 711 | 109.49 | 123.25 | 138.70 | 152.39 | 172.88 | 189.89 | 215.33 | 244.01 | |||||||
| （720） | 110.89 | 124.83 | 140.47 | 154.35 | 175.10 | 192.34 | 218.10 | 247.17 | |||||||
| 762 | 117.41 | 132.18 | 148.76 | 163.46 | 185.45 | 203.73 | 231.05 | 261.87 | |||||||
| 813 | 125.33 | 141.11 | 158.82 | 174.53 | 198.03 | 217.56 | 246.77 | 279.73 | |||||||
| 864 | 133.26 | 150.04 | 168.88 | 185.60 | 210.61 | 231.40 | 262.49 | 297.59 | 334.61 | ||||||
| 914 | 178.75 | 196.45 | 222.94 | 244.96 | 277.90 | 315.10 | 354.34 | ||||||||
| 1016 | 198.87 | 218.58 | 248.09 | 272.63 | 309.35 | 350.82 | 394.58 | ||||||||
注：外径中括号内的数据是选用。
焊接钢管用于石油和自然气长间隔保送管道较多。我国出口的钢管中焊接钢管比无缝钢管多，近年来，美国进口焊接钢管 1/3 是中国产品。
（2）有色金属管
1）铜及铜合金管：管道工程用铜管管材有纯铜管（工业纯铜）、黄铜管（铜锌合金与特殊黄铜）和青铜管（铝青铜和锡青铜等）。按制造办法，铜管又可分为拉制管、轧制管和挤制管等，普通中、低压管道采用拉制管。纯铜管和黄铜管大多用于制造换热设备、制冷系统、化工管路、以及仪表的测压管线或传送液体的管线上。
纯铜管适用于工作压力在 4MPa 一下、温度为 -196~250℃ 的管路、黄铜管适用于工作压力在 22MPa 以下、温度为 -158~120℃ 的管路。在制冷系统中，铜管适用于工作压力低于 2MPa、温度为 -20~150℃，保送制冷剂与光滑油的管路上，近年来已用在室内燃气管路及高级宾馆的冷热水系统上。
2）铝及铝合金管：铝及铝合金管只需用于保送脂肪酸、硫化氢、二氧化碳和硝酸、醋酸等管道。它普通采用拉制和挤压等办法消费；其有质量轻、不锈蚀等特性，但其机械强度较差，不能接受较高压力。
3）钛管：钛管常用于其他管材无法胜任的工艺部位，其主要特性是质量轻、强度高、耐腐蚀、耐低温，适用温度范围为 -140~250℃，当温度高于 250℃ 时，其力学性能降落。
（3）铸铁管
1）高硅铸铁管:高硅管道是由含碳量在 0.5%~1.2%（质量分数，下同），含硅量在 10%~17% 的铁硅合金组成，具有很高的耐腐蚀性能。常用的高硅铸铁含硅量为 14.5%，随着硅含量的增加，耐腐蚀性能增大，但脆性也变大。普通运用压力为 0.25MPa 以下。
2）普通铸铁管：普通承插铸铁管用于给排水管道，按压力不同分为低压管（＜0.45MPa）、中压管（0.45~0.75MPa）和高压管（0.75~1.0MPa），将管与法兰铸成一体的普通法兰铸铁管拆卸便当，应用较普遍。
（4）非金属管
1）耐酸酚醛塑料管：耐酸酚醛塑料管具有良好的耐腐蚀性能，能抗大局部酸性、有机溶剂等腐蚀，但不耐碱性及强氧化性的酸腐蚀。由于其冲击韧性差，较脆，故不宜在有机械振动、温度变化大的状况下运用，普通用于温度为 -30~130℃、压力 ＜0.6MPa 的工况。
2）硬聚氯乙烯管：硬聚氯乙烯管对不同浓度的大局部酸碱盐类的溶液有较好的耐腐蚀性，但在 50%以上的硝酸及发烟硫酸中则不稳定。其传热系数低、塑性好，不过其强度差，且只要在 60℃ 以下时才干坚持恰当强度，用于压力 ＜0.6MPa 的工况。
3）石墨管：石墨管具有良好的耐腐蚀性，且热胀系数小，不污染介质，但其较脆，强度低，适用于温度 ＜150℃、压力 ＜0.3MPa 的工况。
4）耐酸陶瓷管：耐酸陶瓷管具有良好的耐腐蚀性、不浸透性。但它耐温度骤变性差、强度差、强度低、不宜用于剧毒或易燃易爆介质，普通用于温度 ＜120℃、压力为常压的工况。
5）玻璃管：玻璃管对除氢氟酸外的酸类、稀碱及有机溶剂等具有良好的耐蚀性，但其抗拉强度低、常用于温度 ＜120℃、压力 ＜2.0MPa 的工况。
6）混凝土管：混凝土管分为预应力和自应力钢筋混凝土管两种。管口衔接采用承插接口，用圆形截面的橡胶圈密封，适用于长间隔保送低压水、气等，普通用于压力 ＜1.0MPa 的工况。
普通无缝钢管由 10、20、Q295、Q345 牌号的钢制造。按制造办法分为热轧无缝钢管和冷拔（轧）无缝管，热轧钢管的长度为 3000~12000mm。冷拔钢管的长度为 3000~10500mm。保送流体用无缝钢管，常用规格见表 2-3。
答：管道管理的技术请求是：
（1）树立管道的技术档案与台账。管道档案应包括图样、装置验收技术材料、维修记载、运转时间统计表等。
（2）树立管道管理的规章制度。对压力管道、运用单位应依据压力管道技术规范、法规树立平安管理制度、操作者平安被训制度、工艺消费造作制度、检验维护制度、事故管理制度及报废更新制度等。
关于从事压力管道、管件的设计、制造、装置、维修、全面检验的单位，均须取得有关部门颁发的答应证，方可从事相应的工作。
（3）消费管理。操作者应对运用的管道停止巡回检查。内容包括：管道的零部件能否完好齐全；仪表、计量用具、信号联锁、各种平安安装、自动调理安装能否灵活牢靠；管道能否有走漏、超温、超压、过冷、异常震动现象；管道支架能否结实；各种螺栓能否紧固；防腐防冻设备能否完好有效；阀门操作机构的光滑和防护能否契合请求等。
（4）维修管理。管道的维修管理应按 GB 50235—1997《工业金属管道工程施工及验收标准》的规则停止管理与验收。
