各种法兰的理论重量表

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各种法兰的理论重量表

各种法兰的理论重量表?平焊法兰理论重量表重量PNDN?0.25?0.6?1.0?1.6?2.5100.360.360.61

0.610.61150.410.410.680.680.68200.60.60.940.940.94250.730.731.121

.121.12321.191.191.861.861.86401.381.382.122.122.12501.511.512.77

2.772.77651.851.853.313.313.46802.942.943.593.594.311003.413.414.

574.576.291254.534.535.655.658.51505.145.147.617.6110.82006.856.8

59.249.6914.22508.968.9611.913.820.230011.911.914.618.926.535014.

314.318.924.737.640017.117.124.432.150.745020.520.527.940.557.850

023.723.734.957.676.260033.733.748.188.2117.070044.249.180058.

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PNDN0.61.01.62.54.0100.380.650.650.650.65150.440.720.720.720.72100.661.031.031.031.03250.811.241.241.241.24321.322.

022.022.022.02401.552.362.362.362.36501.733.083.083.083.08652.233

.663.663.933.93803.324.084.084.864.861004.065.45.46.916.911255.26

7.017.019.349.341506.379.19.112.212.22007.9810.610.615.619.425010

.313.414.321.930.530014.115.418.828.842.9350?20.525.242.458.6400?

27.634.857.488.3450?31.141.263.785.6500?38.154.981.4106.2600?48.1

77.0109.4171.2?带颈对焊法兰理论重量表重量??PNDN?1.0?1.6?2.5?4.0?6.3?10.0?16.0

25.0100.660.660.660.661.181.181.392.23150.750.750.750.751.301.30

1.652.65201.051.051.051.052.002.002.93.12251.261.261.261.262.792.

793.613.74322.052.052.052.053.383.384.65.32402.372.372.372.374.44

.45.927.08503.113.113.113.114.866.248.288.61653.743.743.943.945.9

27.9510.813.2804.224.225.035.036.939.112.917.01005.395.397.017.01

9.9813.919.628.11256.886.889.619.6115.622.330.639.71509.139.1312.

712.723.030.142.260.520011.811.817.421.435.051.065.5111.825015.61

6.721.434.648.982.2106.4193.330018.622.431.948.268.3119.4153.2?35

022.830.548.566.895.4166.2??40028.238.561.196.0141.3214.5??45031.

750.871.5100.150036.870.792.5125.960052.685.3132.8204.2??

70064.594.8142.7?80087.0109.4193.2?900106.1127.3236.8

1000123.9169.7312.9??1200256.5254.41400187.7333.5?

1600368.9483.71800451.1590.52000664.2748.9?

承插焊法兰理论重量表重量?PNDN?1.0?1.6?2.5?4.0?6.3?10.0100.650.650.650.651.141.14150.720.720.720.721.261.27201.031.031.031.031.932.11251.241.2

41.241.242.432.65322.022.022.022.023.173.2402.362.362.362.363.884

.21503.083.083.083.084.615.78??螺纹法兰理论重量表重量PNDN?0.6?1.0?1.6?2.

5?4.0100.370.640.640.640.64150.430.710.710.710.71200.651.021.021.

021.02250.811.231.231.231.23321.281.961.961.961.96401.522.312.312

.312.31501.703.043.043.043.04652.293.723.724.004.00803.44.164.164

.964.961003.825.165.166.646.641254.916.666.668.968.961505.728.458

.4511.411.4松套法兰理论重量表重量PNDN?0.6?1.0?1.6?2.5?4.0100.360.60

.60.60.6150.40.670.670.670.67200.580.930.930.930.93250.711.101.11

.11.1321.171.831.831.831.83401.342.072.072.072.07501.482.722.722.

722.72651.83.253.253.403.40802.883.523.524.234.231003.314.454.456

.156.151254.45.505.58.318.311504.987.417.4110.610.62006.618.979.4

113.917.52508.5411.413.319.628.630011.313.918.125.640.335013.718.

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?PNDN?0.25?0.

6?1.0?1.6?2.5?4.0?6.3?10.0?16.0?25.0100.380.380.630.630.630.631.1

41.141.362.12150.440.440.710.710.710.711.261.261.642.50200.660.66

1.011.011.011.011.921.922.882.92250.820.821.231.231.231.232.712.7

13.613.55321.341.342.032.032.032.033.273.274.634.99401.591.592.35

2.352.352.354.324.325.986.60501.861.863.203.203.203.204.886.0983.

278.10652.452.454.064.064.294.296.117.9511.112.3803.863.864.614.6

15.535.537.319.3713.516.41004.574.756.216.217.597.5910.614.020.22

7.01256.786.108.128.1210.810.816.722.331.237.91508.348.3411.411.4

14.614.624.530.643.257.220013.513.516.516.522.527.240.554.368.910

8.225020.220.224.125.033.544.458.287.5114.3188.230027.827.830.835

.146.364.183.4131.6170.3320.135034.734.739.648.068.089.5115.8178.8??40042.042.049.463.589.6126.7155.5239.9??45051.251.262.986.9119

.9154.150065.165.175.1108.6150.0187.8600102.9102.9123.718

4.3244.3331.0700160.5178.3182.5235.7??800217.5251.9259.9325.0??

900279.5335.4343.8437.11000350.8434.3473.2601.7

1200504.8717.0764.7998.21400724.21093.8??1600995.71544.1??

180013.4.62130.120001698.72860.5?????

法兰理论重量表

Prepared on 22 November 2020

平焊法兰理论重量表

重量 PN

100

125

150

200

250

300

350

400

450

500

600

700

800

900

1000

1200

1400

1600

1800

2000

平焊带颈法兰理论重量表

重量 PN

32 40

100

125

150

200

250

300

350

400

450

500

600

螺纹法兰理论重量表

重量 PN

100

125

150

松套法兰理论重量表

重量 PN

100 125

150

200

钢制法兰理论重量及单价表及螺栓重量和长度(全)

钢制法兰理论重量及单价表（0.25MPa）

DN 重量元/kg

8 8.5 9 9.5 10 10.5 11 11.5 12

50 0.954 7.6 8.1 8.6 9.1 9.5 10.0 10.5 11.0 11.4

65 1.43 11.4 12.2 12.9 13.6 14.3 15.0 15.7 16.4 17.2

80 1.95 15.6 16.6 17.6 18.5 19.5 20.5 21.5 22.4 23.4

100 2.2 17.6 18.7 19.8 20.9 22.0 23.1 24.2 25.3 26.4

125 2.78 22.2 23.6 25.0 26.4 27.8 29.2 30.6 32.0 33.4

150 3.49 27.9 29.7 31.4 33.2 34.9 36.6 38.4 40.1 41.9

200 4.88 39.0 41.5 43.9 46.4 48.8 51.2 53.7 56.1 58.6

250 7.32 58.6 62.2 65.9 69.5 73.2 76.9 80.5 84.2 87.8

300 9.4 75.2 79.9 84.6 89.3 94.0 98.7 103.4 108.1 112.8

350 10.5 84.0 89.3 94.5 99.8 105.0 110.3 115.5 120.8 126.0

400 11.7 93.6 99.5 105.3 111.2 117.0 122.9 128.7 134.6 140.4

450 14.9 119.2 126.7 134.1 141.6 149.0 156.5 163.9 171.4 178.8

法兰理论重量表 2

平焊法兰：

平焊法兰是指与容器或管道采用角焊缝连接的一种法兰。属任意式法兰。设计时根据法兰环与直筒段连接的整体性程度，分别按整体式或松式法兰校核。法兰环有带颈和不带颈两种。与带颈对焊法兰相比，平焊法兰结构简单，用材省，但刚度及密封性不如带颈对焊法兰。平焊法兰广泛应用于中低压容器和管道的连接。

原理及特点：

关于平焊法兰的这个问题一直是人们比较关注的话题，它关系到公司和企业的生产成本或者经济效益等问题，所以关于平焊法兰的密封原理在不断的改进和完善。

然而，平焊法兰的主要设计缺点是它不能保证无泄漏。这就是其设计上的不足：连接是动态的，而且诸如热膨胀和起伏不定的周期载荷都会造成法兰面之间的移动，影响法兰的功能，从而使法兰的完整性受损，最终导致泄漏。任何产品都不可能没有缺陷，只是尽量控制产品的不足到最少，所以公司在生产平焊法兰时尽量完善产品的性能，使之发挥最大的作用。

平焊法兰的特点：平焊法兰不仅节省了空间、减轻了重量，更重要的是确保接头部位不会发生泄漏，具有良好的密封性能。紧凑法兰尺寸之所以减小，是由于减小了密封件的直径，这将会减小密封面的截面。其次，法兰垫片已被密封环所代替，以确保密封面对密封面的匹配。这样一来，为了压紧密封面仅需要很小的压力。随着所需压力的降低，螺栓的尺寸和所需数量都可相应减小，所以最终设计出

了一种体积小且重量轻(比传统的法兰的重量减轻70%～80%)的新产品。因此平焊法兰式一种比较优质的法兰产品，减轻了质量和空间，对工业用途起了重要作用。

平焊法兰的密封原理：螺栓的两个密封面相互挤压法兰垫片并形成密封，但这同时也导致密封的破坏。为了保持密封，就得维持巨大的螺栓作用力，为此，螺栓就要做得更大。而更大的螺栓就要匹配更大的螺母，这就意味着需要直径更大的螺栓为上紧螺母创造条件。然而螺栓的直径越大，适用的法兰就会变得弯曲，唯一的办法就是增大法兰部分的壁厚。整个装置将需要极大的尺寸和重量，这在近海环境下便成了一个特殊问题，因为在这种情况下重量始终是人们必须引起关注的主要问题。而且，从根本上来说，平焊法兰是一种无效的密封，它需要把50%的螺栓负荷用于挤压垫片，而用于保持压力的负荷只剩50%。