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1、焊接鋼管標(biāo)準(zhǔn)（GB/T3091-2001）發(fā)布者：源晟鍵焊管機(jī)械模具發(fā)布時(shí)間：2013.02.01低壓流體輸送用焊接鋼管（GB/T3091-2001）1O公稱口徑外徑普通鋼管加厚鋼管毫米英寸公稱尺寸（毫米）允差壁厚理論重量（千克/米）壁厚理論重量（千克/米）公稱尺寸（毫米）允差（%）公稱尺寸（毫米）允差（%）151/221.30.50mm2.812.51.283.512.51.54203/426.90.50mm2.81.663.52.0225133.70.50mm3.22.414.02.933211/442.40.50mm3.53.364.03.794011/248.30.50mm3.53.8

2、74.54.8650260.31.0%3.85.294.56.196521/276.11.0%4.07.114.57.9580388.91.0%4.08.385.010.351004114.31.0%4.010.885.013.481255139.71.0%4.013.395.518.201506168.31.0%4.518.186.024.02公稱外徑（毫米）公稱壁厚（毫米）4.04.55.05.56.06.57.08.09.010.011.012.514.015.016.0理論重量（千克/米）177.817.1419.2321.3123.3725.42193.718.7121.0023.2

3、725.5327.77219.121.2223.8226.4028.9731.5334.0836.6141.6546.6351.57244.523.7226.6329.5332.4235.2938.1541.0046.6652.2757.83273.033.0536.2839.5142.7245.9252.2858.6064.86323.939.3243.1947.0450.8854.7162.3269.8977.4184.8895.99355.647.4951.7355.9660.1868.5876.9385.2393.48105.77406.454.3859.2564.1068.9578.

4、6088.2097.76107.26121.43457.261.2766.7672.2577.7288.6299.48110.29121.04137.0950868.1674.2880.3986.4998.65110.75122.81134.82152.7555975.0881.8388.5795.29108.71122.07135.39148.66168.47188.17201.24214.2661081.9983.9796.74104.10118.77133.39147.97162.49184.19205.78220.10234.38表3公稱外任（毫米）公稱壁厚（毫米）6.06).57.0

5、81.09).010.011.013.014.015.016.018.019.020.022.025.0理論重量（千克/米）66096.77104.76112.73128.63144.49160.30176.06207.43238.60254.11284.99300.35315.67345.15346.15391.50711104.32112.93121.53138.70155.81172.88189.89223.78240.65257.47274.24307.63324.25340.82373.82422.94762111.86121.11130.34148.76167.13185.4520

6、3.73240.13258.26276.33294.36330.27348.15365.98401.49454.39813119.41129.28139.14158.82178.45198.03217.56256.48275.86295.20314.48352.91372.04391.13426.16485.83864126.96137.46147.94168.88189.77210.61231.40272.83293.47314.06334.61375.55395.94416.29456.83517.27914134.3145.4156.5178.7200.8222.94244.96288.

7、86310.73332.56354.34397.74419.37440.9483.9548.678575610中國國家標(biāo)準(zhǔn)GB/T3091-93CHINANATIONALSTANDARDGB/T3091-93GB/T3091-93低壓流體輸送用鍍鋅焊接鋼管THEGavanizedweldedsteelpipeuptoCHINANATIONALSTANDARDGB/T3091-93forLowPressureService公徑口稱外徑普通鋼管加厚鋼管螺紋DNmmn公稱尺寸允許偏差WallThickness理論重量WallThickness理論重量每寸牙數(shù)長度公稱尺寸允許偏差公稱尺寸允許偏差151/221.3±0.50mm2.75+12-151.323.25+12-151.511411.415.0203/426.82.751.713.502.091412.716.325133.53.252.514.003.001114.519.13211/442.33.253.254.003.901116.821.44011/248.03.503.984.254.721116.821.450260.03.505.064.506.331121.125.76521/275.53.756.874.508.101123.230.280388.54.008.614.7510.071126

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