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1、钢管公称直径、外径、壁厚对照表GB 12459、GB/T13401公称通径Norminal Pipe Size DN外径Outside Diameter公称壁厚TNorminal Wall ThicknessA系 列Series AB系 列Serie s Bsch5 ssch10ssch20 sLGsch2 0sch30STDsch4 0sch6 0xssch8 0sch10 0sch12 0sch14 0sch16 01521.3181.62.2.62.9-3.64.52026.9251.62.12.62.9-45.62533.7321.62.83.23.2-4.56.33242.4381.
2、6283.23.6-56.34048.3451.62.83.23.6-57.15060.3571.62.83.63.24-5.68.86576.176233.64.55-7.1108088.9892344.55.6-81190101.62344.55.6-812.5100114.310823455.9-8.81114.2125139.71332.93.4556.3-1012.516150168.31592.93.455.67.1-11.114.217.5200219.12192.946.36.37.1810-12.51617.52022.22502732733.646.36.388.812.5
3、-1617.522.22528300323.932544.56.36.38.81014.2-17.522.2252832350355.63774588810101116132025.8283236400406.442645888101012.517.51322.228 30一 3640450457.247845888111014.22012530364045350050852955.6881012.510162013283240455055055955.681013306006106305.66.381017.5133265066081013注：1、sch5s、10s、40s、80s 用 于不
4、锈钢管件2、GB 12459为无缝对焊管件标 准，GB/T 13401为钢板制对焊管 件标准。70071172081013750762810138008138208101385086481013900914920810139509658101310001016102081013105010678101311001118112081013115011688101312001220122081013壁厚表 ANSI/ASME B36.10M B36.19MWall Thicknesses Schedule公称通径Norminal Pipe SizeDN(in.)外径OutsideDiameterD
5、公称壁厚TNorminal Wall Thicknesssch5ssch10ssch10sch20sch30sch40sSTDsch40sch60sch80sXSsch80sch100sch120sch140sch160XXS1/810.31.241.731.731.732.412.412.411/413.71.652.242.242.243.023.023.023/817.11.652.312.312.313.23.23.21/221.31.652.112.772.772.773.733.733.734.787.473/426.71.652.112.872.872.873.913.913.9
6、15.567.82133.41.652.773.383.383.384.554.554.556.359.091?42.21.652.773.563.563.564.854.854.856.359.71?48.31.652.773.683.683.685.085.085.087.1410.15260.31.652.773.913.913.915.545.545.548.7411.072?732.113.055.165.165.167.017.017.019.5314.02388.92.113.055.495.495.497.627.627.6211.1315.243?101.62.113.055
7、.745.745.748.088.088.084114.32.113.056.026.026.028.568.568.5611.1313.4917.125141.32.773.46.556.556.559.539.539.5312.715.8819.056168.32.773.47.117.117.1110.9710.9710.9714.2718.2621.958219.12.773.766.357.048.188.188.1810.3112.712.712.715.0918.2620.6223.0122.2310273.13.44.196.357.89.279.279.2712.712.71
8、2.7,15.0918.2621.4425.428.5825.412323.93.964.576.358.389.539.5310.3114.2712.712.717.4821.4425.428.5833.3225.414355.63.964.786.357.929.539.5311.1315.0912.719.0523.8327.7931.7535.7116406.44.194.786.357.929.539.5312.716.6612.721.4426.1930.9636.5340.4918457.24.194.786.357.92 11.139.5314.2719.0512.723.83
9、29.3634.9339.6745.24205084.785.546.359.5312.79.5315.0920.6212.726.1932.5438.144.4550.0122558.84.785.546.359.5312.79.5322.2312.728.5834.9341.2847.6353.9824609.65.546.356.359.53 14.279.5317.4824.6112.730.9638.8946.0252.3759.5426660.47.9212.79.5312.728711.27.9212.7 15.889.5312.7307626.357.927.9212.7 15
10、.889.5312.732812.87.9212.7 15.88 17.489.5317.4812.734863.67.9212.7 15.88 17.489.5317.4812.736914.47.9212.7 15.88 19.059.5319.0512.738965.29.5312.7注：sch5s、10s、40s、80s用于不锈钢管 件。4010169.5312.7421066.89.5312.7441117.69.5312.7461168 49.5312.7481219.29.5312.7A系列为英制系列，公称尺寸用NPS标识，管子外径按ASME B36. 10M的规定B系列为公制系列，公称尺寸用DN标识，管子外径按ISO4200的规定