弯头重量计算公式

弯头重量计算公式圆环体积=2X3.14X3.14(r^2)R

r--圆环圆半径

R--圆环回转半径

中空管圆环体积=2X3.14X3.14((r^2)-(r'^2))R

r'--圆环内圆半径

90，60，45度的弯头（肘管）体积分别是对应中空管圆环体积的1/4、1/6、1/8。

钢的密度工程上计算重量时按7.85公斤/立方分米，密度X体积=重量（质量）。1、180°弯头按表2倍计算，45°按1/2计算；2、R1.0DN弯头重量按表2/3计算；3、表中未列出壁厚的重量，可取与之相近的两个重量计算平均值；4、90°弯头计算公式；0.0387*S(D-S)R/1000式中S=壁厚mmD=外径mmR=弯曲半径mm90°弯头重量计算公式：W=9.685*10^-6*R(D2-d2)

式中：W—90°弯头重量，kg；

R—弯头的曲率半径（结构尺寸），mm；

D—弯头外径，mm；

d—弯头内径，mm。

弯头重量公式中采用碳钢比重，即7.85kg/dm3计算。

180°弯头的重量按90°弯头重量的2倍计算。即W=2*9.685*10^-6*R(D2-d2)

提示：10^-6表10的-6次方。法兰成品理论重量算法：（外径＊外径－内径＊内径－螺栓孔径＊螺栓孔径＊螺栓孔数）＊厚度＊０.６１６＊０.００００１＝法兰加工好的成品理论重量．一般的国内用的法兰对精密度要求不是很高的．用普通车床加工出来的法兰正负会有一点差．和这个法兰的实际重量要差一点．所以我们称之为理论重量．一般国内都是用理论重量来衡量法兰的标准平焊法兰理论重量表重量 PNDN1.62.5100.360.360.610.610.61150.410.410.680.680.6840.940.94250.730.72361.861.86401.381.32501.511.512.772.772.77651.851.853.313.313.46802.942.943.593.594.311003.413.414.574.576.291254.534.535.655.658.515017.6110.82006.856.859.249.6914.22508.968.9611.913.820.230011.911.914.618.926.535014.314.318.924.737.640032.150.745020.520.527.940.557.850023.723.734.957.676.260033.733.748.188.2117.070044.249.180058.667.890069.182.9100079.498.3120098.6163.11400124.4244.11600166.8309.01800197.5408.02000234.6538.0

平焊带颈法兰理论重量表重量 PNDN0.61.0100.380.650.650.650.65150.440.720.720.720.72100.661.031.031.031.03250.841.24321.322.022.022.022.02401.552.362.362.362.36501.733.083.083.083.08652.233.663.663.933.93803.324.084.084.864.861004.016.911255.267.017.019.349.341506.312.22007.9810.610.615.619.425010.313.414.321.930.530014.115.418.828.842.935020.525.242.458.640027.634.857.488.345031.141.263.785.650038.154.981.4106.260048.177.0109.4171.2

带颈对焊法兰理论重量表重量PNDN1.06.310.016.025.0100.660.660.660.692.23150.750.750.750.751.301.301.652.65201.051.051.051.052.002.002.93.12251.261.261.261.262.792.793.613.74322.052.052.052.053.383.384.65.32402.372.372.372.327.085013.114.866.248.288.61653.743.743.943.945.927.9510.813.28035.036.939.112.917.01005.395.397.017.019.9813.919.628.11256.886.889.619.6115.622.330.639.71509.139.1312.712.723.030.142.260.520011.811.817.421.435.051.065.5111.825015.616.721.434.648.982.2106.4193.330018.622.431.948.268.3119.4153.235022.830.548.566.895.4166.240028.238.561.196.0141.3214.545031.750.871.5100.150036.870.792.5125.960052.685.3132.8204.270064.594.8142.780087.0109.4193.2900106.1127.3236.81000123.9169.7312.91200256.5254.41400187.7333.51600368.9483.71800451.1590.52000664.2748.9

承插焊法兰理论重量表重量PNDN1.06.310.0100.650.650.650.651.141.14150.720.720.720.721.261.27201.031.031.031.031.932.1141.242.432.65322.022.022.022.023.173.2402.362.362.362.363.884.21503.083.083.083.084.615.78螺纹法兰理论重量表重量PNDN0.61.0100.370.640.640.640.64150.430.710.710.710.71200.651.021.021.021.02250.831.23321.281.961.961.961.96401.522.312.312.312.31501.703.043.043.043.04652.293.723.724.004.008064.964.961003.846.641254.916.666.668.968.961505.728.458.4511.411.4

松套法兰理论重量表重量PNDN0.61.0100.30.6150.40.670.670.670.67200.580.930.930.930.93250.71.1321.171.831.831.831.83401.342.072.072.072.07501.482.722.722.722.72653.403.40802.883.523.524.234.231003.314.454.456.156.151254.45.505.58.318.311504.987.417.4110.610.62006.618.979.4113.917.52508.5411.413.319.628.630011.313.918.125.640.335013.718.223.936.656.440016.323.531.149.482.145019.626.939.256.380.850022.433.455.874.0107.46003246.185.7113.7172.8

法兰盖理论重量表重PNDN6.310.016.025.0100.380.380.630.630.630.662.12150.440.440.710.710.710.711.261.261.642.50200.660.661.011.011.011.011.921.922.882.92250.820.831.232.712.713.613.55321.341.342.032.032.032.033.273.274.634.99401.591.592.352.352.352.354.324.325.986.60501.861.803.204.886.0983.278.10652.452.454.064.064.294.296.117.9511.112.3803.863.864.614.615.535.537.319.3713.516.41004.574.797.5910.614.020.227.01256.7210.810.816.722.331.237.91508.348.3411.411.414.614.624.530.643.257.220013.513.516.516.522.527.240.554.368.9108.225025.033.544.458.287.5114.3188.230027.827.830.835.146.364.183.4131.6170.3320.135034.734.739.648.068.089.5115.8178.840042.042.049.463.589.6126.7155.5239.945051.251.262.986.9119.9154.1500108.6150.0187.8600102.9102.9123.7184.3244.3331.0700160.5178.3182.5235.7800217.5251.9259.9325.0900279.5335.4343.8437.11000350.8434.3473.2601.71200504.8717.0764.7998.21400724.21093.81600995.71544.1180013.4.62130.120001698.72860.5平焊法兰理论重量表重量 PNDN1.62.5100.360.360.610.610.61150.410.410.680.680.6840.940.94250.730.72361.861.86401.381.32501.511.512.772.772.77651.851.853.313.313.46802.942.943.593.594.311003.413.414.574.576.291254.534.535.655.658.515017.6110.82006.856.859.249.6914.22508.968.9611.913.820.230011.911.914.618.926.535014.314.318.924.737.640032.150.745020.520.527.940.557.850023.723.734.957.676.260033.733.748.188.2117.070044.249.180058.667.890069.182.9100079.498.3120098.6163.11400124.4244.11600166.8309.01800197.5408.02000234.6538.0

平焊带颈法兰理论重量表重量 PNDN0.61.0100.380.650.650.650.65150.440.720.720.720.72100.661.031.031.031.03250.841.24321.322.022.022.022.02401.552.362.362.362.36501.733.083.083.083.08652.233.663.663.933.93803.324.084.084.864.861004.016.911255.267.017.019.349.341506.312.22007.9810.610.615.619.425010.313.414.321.930.530014.115.418.828.842.935020.525.242.458.640027.634.857.488.345031.141.263.785.650038.154.981.4106.260048.177.0109.4171.2

带颈对焊法兰理论重量表重量PNDN1.06.310.016.025.0100.660.660.660.692.23150.750.750.750.751.301.301.652.65201.051.051.051.052.002.002.93.12251.261.261.261.262.792.793.613.74322.052.052.052.053.383.384.65.32402.372.372.372.327.085013.114.866.248.288.61653.743.743.943.945.927.9510.813.28035.036.939.112.917.01005.395.397.017.019.9813.919.628.11256.886.889.619.6115.622.330.639.71509.139.1312.712.723.030.142.260.520011.811.817.421.435.051.065.5111.825015.616.721.434.648.982.2106.4193.330018.622.431.948.268.3119.4153.235022.830.548.566.895.4166.240028.238.561.196.0141.3214.545031.750.871.5100.150036.870.792.5125.960052.685.3132.8204.270064.594.8142.780087.0109.4193.2900106.1127.3236.81000123.9169.7312.91200256.5254.41400187.7333.51600368.9483.71800451.1590.52000664.2748.9

承插焊法兰理论重量表重量PNDN1.06.310.0100.650.650.650.651.141.14150.720.720.720.721.261.27201.031.031.031.031.932.1141.242.432.65322.022.022.022.023.173.2402.362.362.362.363.884.21503.083.083.083.084.615.78螺纹法兰理论重量表重量PNDN0.61.0100.370.640.640.640.64150.430.710.710.710.71200.651.021.021.021.02250.831.23321.281.961.961.961.96401.522.312.312.312.31501.703.043.043.043.04652.293.723.724.004.008064.964.961003.846.641254.916.666.668.968.961505.728.458.4511.411.4

松套法兰理论重量表重量PNDN0.61.0100.30.6150.40.670.670.670.67200.580.930.930.930.93250.71.1321.171.831.831.831.83401.342.072.072.072.07501.482.722.722.722.72653.403.40802.883.523.524.234.231003.314.454.456.156.151254.45.505.58.318.311504.987.417.4110.610.62006.618.979.4113.917.52508.5411.413.319.628.630011.313.918.125.640.335013.718.223.936.656.440016.323.531.149.482.145019.626.939.256.380.850022.433.455.874.0107.46003246.185.7113.7172.8

法兰盖理论重量表重PNDN6.310.016.025.0100.380.380.630.630.630.662.12150.440.440.710.710.710.711.261.261.642.50