紫铜管kg/米M=0.0283t(D-t)0.50.7511.522.533.544.55677.5820.02120.026530.028330.03540.047760.056640.04950.068980.08490.1061350.06370.090210.11320.148580.169860.07780.111430.14150.191030.226470.09200.132660.16980.233480.28300.31840.339680.10610.153880.19810.275930.33960.38910.42450.445790.12030.175110.22640.318380.39620.45990.50940.54480.5660100.13440.196330.25470.360830.45280.53060.59430.64380.67920.7004110.28300.403280.50940.60140.67920.74290.79240.82780.8490120.31130.445730.56600.67210.76410.84190.90560.95510.9905130.33960.488180.62260.74290.84900.94101.01881.08251.13201.1886140.36790.530630.67920.81360.93391.04001.13201.20981.27351.35841.3867150.39620.573080.73580.88441.01881.13911.24521.33721.41501.52821.5848160.42450.615530.79240.95511.10371.23811.35841.46451.55651.69801.78291.8041170.45280.657980.84901.02591.18861.33721.47161.59191.69801.86781.98102.01642.0376180.48110.700430.90561.09661.27351.43621.58481.71921.83952.03762.17912.22862.2640190.50940.742880.96221.16741.35841.53531.69801.84661.98102.20742.37722.44092.4904200.53770.785331.01881.23811.44331.63431.81121.97392.12252.37722.57532.65312.7168220.59430.870231.13201.37961.61311.83242.03762.22862.40552.71682.97153.07763.1696230.62260.912681.18861.45041.69801.93152.15082.35602.54702.88663.16963.28993.3960240.65090.955131.24521.52111.78292.03052.26402.48332.68853.05643.36773.50213.6224250.67920.997581.30181.59191.86782.12962.37722.61072.83003.22623.56583.71443.8488260.70751.040031.35841.66261.95272.22862.49042.73802.97153.39603.76393.92664.0752270.73581.082481.41501.73342.03762.32772.60362.86543.11303.56583.96204.13894.3016280.76411.124931.47161.80412.12252.42672.71682.99273.25453.73564.16014.35114.5280300.82071.209831.58481.94562.29232.62482.94323.24743.53754.07524.55634.77564.9808310.84901.252281.64142.01642.37722.72393.05643.37483.67904.24504.75444.98795.2072320.87731.294731.69802.08712.46212.82293.16963.50213.82054.41484.95255.20015.4336340.93391.379631.81122.22862.63193.02103.39603.75687.10354.75445.34875.6246