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1、螺纹应力截面积表公称直径螺距As(mm2)公称直径螺距As(mm2)公称直径螺距As(mm2)3.50.357.8181227.4363857.940.59.7181.5214.5364807.640.7&6182201.9381.51047.84.50.512.6182.5189.7391.51106.04.50.7511.1201284.03921077.250.516.0201.5269.53931020.750.813.9202255.4394965.85.50.519.7202.5241.7401.51165.760.523.8221346.94021136.16119.8221.5
2、330.94031078.270.7530.8222315.2421.51289.97128.4222.5299.94221258.880.7541.4241416.14231197.78138.7241.5398.5424113 8.181.2536.0242381.3424.5110 8.990.7553.6243348.0451.51487.99150.5251453.04521454.591.2547.4251.5434.74531388.8100.7567.4252416.74541324.610163.9261.5472.4454.51293.1101.2560.4271531.6
3、101.557.1271.5511.7110.7582.7272492.211178.8273454.3111.571.3281573.312195.3281.5552.6121.2591.1282532.3121.587.0301661.3121.7583.0301.5639.1141133.1302617.2141.2512 8.1303574.7141.5123.2303.5554.0142113.7321.5731.8151154.3322708.4151.5143.7331.5780.6161177.1332756.4161.5165.7333709.2162154.7333.5686.2171201.5361.5936.2171.5189.3362909.7计算公式：As=PI()*(d-0.98315*P)人2/4
