常用的法兰螺栓紧固力矩

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1、常用的法兰螺栓紧固力矩为方便使用，将操作压力等于公称压力，操作温度等于150℃条件下计算得到的紧固力矩列表如下。一般情况下可直接采用。a)法兰压力等级：PN15.0MPa（相当于ANSICLASS900）；螺栓材料：25Cr2MoVA；垫片形式：圆环垫；垫片材料：不锈钢及软钢。表-1列出了上述条件下各种公称直径法兰对应的法兰螺栓紧固力矩。表-1法兰螺栓紧固力矩法兰公称直径DNmm螺栓公称直径mm螺栓个数个单个螺栓紧固力矩，Nm不锈钢垫片软钢垫片1520467.6766.462020470.1468.7925244132.43130

2、.5840274203.24200.4650248145.18142.7580248164.30161.16100308322.86318.101503012342.50338.012003612625.00618.112503616633.90627.703003620650.91645.083503920861.22851.3040042201110.641098.6545048201680.661662.0050052202189.332167.19b)法兰压力等级：PN15.0MPa（相当于ANSICLASS900）；螺栓

3、材料：35CrMoA；垫片型式：圆环垫；垫片材料：不锈钢及软钢。表2列出了上述条件下各种公称直径法兰对应的法兰螺栓紧固力矩。表-2法兰螺栓紧固力矩法兰公称直径DNmm螺栓公称直径mm螺栓个数个单个螺栓紧固力矩，Nm不锈钢垫片软钢垫片1520467.6766.462020470.1468.7925244123.89122.0440274190.57187.7950248136.64134.2180248155.76152.62100308304.92300.161503012324.56320.072003612592.50585.

4、612503616601.40595.203003620618.41612.583503920819.16809.2440042201057.311045.3245048201599.091580.4250052202189.332167.19c)法兰压力等级：PN25.0MPa（相当于ANSICLASS1500）；螺栓材料：25Cr2MoVA；垫片型式：圆环垫；垫片材料：不锈钢及软钢。表-3列出了上述条件下各种公称直径法兰对应的法兰螺栓紧固力矩。表-3法兰螺栓紧固力矩法兰公称直径DNmm螺栓公称直径mm螺栓个数个单个螺栓紧固力矩

5、，Nm不锈钢垫片软钢垫片1520476.9174.902020481.0578.7925244148.36145.2740274231.42226.7650248169.61165.5580308353.64346.39100338498.01488.541503612650.33640.0620042121127.311108.1825048121742.351716.1230052162196.182161.7735056162818.472770.9540064164193.824125.3045072165986.7258

6、99.2250076167225.387163.23d)法兰压力等级：PN25.0MPa（相当于ANSICLASS1500）；螺栓材料：35CrMoA；垫片型式：圆环垫；垫片材料：不锈钢及软钢。表-4列出了上述条件下各种公称直径法兰对应的法兰螺栓紧固力矩。表-4法兰螺栓紧固力矩法兰公称直径DNmm螺栓公称直径mm螺栓个数个单个螺栓紧固力矩，Nm不锈钢垫片软钢垫片1520476.9174.902020481.0578.7925244139.81136.7340274218.75214.0950248161.06157.0180308

7、336.55329.29100338474.53465.061503612617.83607.5620042121073.971054.8525048121660.781634.5530052162196.182161.7735056162818.472770.9540064164193.824125.3045072165986.725899.2250076167225.387163.23e)法兰压力等级：PN42.0MPa（相当于ANSICLASS2500）；螺栓材料：25Cr2MoVA；垫片型式：圆环垫；垫片材料：不锈钢及软钢

8、。表-5列出了上述条件下各种公称直径法兰对应的法兰螺栓紧固力矩。表B-5法兰螺栓紧固力矩法兰公称直径DNmm螺栓公称直径mm螺栓个数个单个螺栓紧固力矩，Nm不锈钢垫片软钢垫片1520497.1993.5120204111.58105.2325244