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1、矩形管理论重量表左图中为不等边矩形管：b1：为长边边长b2：为短边边长t：为壁厚x、y：为截面特性尺寸(mm)序号b1123456789101112131415161718192021222324904060804070506040305030b225t1.201.502.503.004.002.503.004.002.503.004.003.004.005.002.503.004.005.003.004.005.003.004.005.00截面积cm21.742.163.754.445.764.255.046.564.755.647.366.848.9611.005.756.848.9611.008.0410.5613.007.449.7612.00尺寸(mm)理论重量序号kg/mb1b2t1.371.702.943.494.523.343.965.153.734.435.785.377.038.644.515.377.038.646.318.2910.215.847.669.4231321005033343536373839404142431408044454647484950515253541801001608015010012080603.004.005.003.004.005.006.003.004.005.006.004.005.006.004.005.006.008.004.005.006.008.004.005.00截面积cm28.6411.3614.0010.4413.7617.0020.1611.6415.3619.0022.5616.9621.0024.9619.3624.0028.5637.4418.5623.0027.3635.8421.7627.00理论重量kg/m6.788.9210.998.2010.8013.3515.839.1412.0614.9217.7113.3116.4819.5915.2018.8422.4229.3914.5718.0521.4828.1317.0821.20252627282930。

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