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低压流体输送用焊接钢管(GB/T3091-2001) 表 1 外径 允差 普通钢管 壁厚 公称尺寸允差(毫米) (%) 理论重量(千克/米) 1.28 1.66 2.41 3.36 12.5 3.87 5.29 7.11 8.38 10.88 13.39 18.18 加厚钢管 壁厚 公称尺寸允差(毫米) (%) 3.5 3.5 4.0 4.0 4.5 4.5 4.5 5.0 5.0 5.5 6.0 理论重量(千克/米) 1.54 2.02 2.93 3.79 4.86 12.5 6.19 7.95 10.35 13.48 18.20 24.02 公称口径 毫米 15 20 25 32 40 50 65 80 100 125 150 表 2 英寸 1/2 3/4 1 公称尺寸(毫米) 21.3 26.9 33.7 0.50mm 2.8 0.50mm 2.8 0.50mm 3.2 0.50mm 3.5 0.50mm 3.5 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 3.8 4.0 4.0 4.0 4.0 4.5 11/4 42.4 11/2 48.3 2 3 4 5 6 60.3 88.9 114.3 139.7 168.3 21/2 76.1 公称公称壁厚(毫米) 外径 4.0 4.5 5.0 5.5 6.0 6.5 7.0 8.0 9.0 10.0 11.0 12.5 14.0 15.0 16.0 (毫米) 8 7 1 5 273.0 理论重量 (千克/米) 177.17.119.221.323.325.44 1 2 2 3 0 2 3 1 7 0 3 5 7 3 7 2 8 2 7 3 9 1 193.18.721.023.225.527.7219.21.223.826.428.931.534.036.6141.6546.6351.578 5 2 244.23.726.629.532.435.238.141.0046.6652.2757.8333.036.239.542.745.9252.2858.6064.86 精品
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323.9 39.343.147.050.854.7162.3269.8977.4184.8895.992 9 4 8 精品
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355.6 406.4 457.2 47.451.755.960.1868.5876.9385.2393.48105.79 8 7 6 8 9 3 5 6 8 3 7 6 0 5 9 7 4 0 1 7 5 7 9 9 1 9 7 6 4 2 6 9 7 3 9 5 7 9 54.359.264.168.9578.6088.2097.76107.2121.461.266.772.277.7288.6299.48110.2121.0137.068.174.280.386.4998.65110.7122.8134.8152.7 508 559 610 表 3 75.081.888.595.29108.7122.0135.3148.6168.4188.1201.2214.27 8 4 0 6 8 81.983.996.7104.1118.7133.3147.9162.4184.1205.7220.1234.3公公称壁厚(毫米) 称6.0 6.5 7.0 8.0 9.0 10.0 11.0 13.0 14.0 15.0 16.0 18.0 19.0 20.0 22.0 25.0 外径 (毫理论重量 (千克/米) 米) 6696.7104.112.128.144.160. 176. 207. 238. 254. 284.300.315. 345. 346.391.0 7 76 73 63 49 30 06 43 60 11 99 35 67 15 15 50 71104.112.121.138.155.172. 189. 223. 240. 257. 274. 307. 324. 340.373.422.1 32 93 53 70 81 88 89 78 65 47 24 63 25 82 82 94 76111.121.130.148.167.185.203.240.258.276.294. 330. 348. 365.401.454.2 86 11 34 76 13 45 73 13 26 33 36 27 15 98 49 39 81119.129.139.158.178.198.217.256.275.295. 314. 352. 372.391. 426.485.3 41 28 14 82 45 03 56 48 86 20 48 91 04 13 16 83 86126.137.147.168.189.210.231.272.293.314.334.375. 395. 416. 456.517.4 96 46 94 88 77 61 40 83 47 06 61 55 94 29 83 27 91134. 145.156.178.200.222.244.288.310.332.354.397.419. 440. 483.548.4 36 47 58 75 87 94 96 86 73 56 34 74 37 95 96 10 中国国家标准GB/T3091-93 CHINA NATIONAL STANDARD GB/T3091-93 GB/T3091-93 低压流体输送用镀锌焊接钢管 THE Gavanized welded steel pipe up to CHINA NATIONAL STANDARD GB/T3091-93 for Low Pressure Service 公径口称 外 径 DN mm in 公称 允许 尺寸 偏差 普通钢管 Wall Thickness 2.75 +12 -15 公称尺寸 允许偏差 重量 加厚钢管 理论 Wall Thickness 1.32 3.25 1.71 3.50 2.51 4.00 3.25 4.00 +12 -15 螺 纹 理论 每寸 长度 公称尺寸 允许偏差 重量 牙数 1.51 14 11.4~15.0 2.09 14 12.7~16.3 3.00 11 14.5~19.1 3.90 11 16.8~21.4 15 1/2 21.3 20 3/4 26.8 25 1 2.75 ±0.50mm 33.5 3.25 3.25 32 11/4 42.3 精品
焊接钢管规格
