管道和法兰的基础知识（终稿）.doc

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1、管道和法兰的基础知识各种管道尺寸规格的不同叫法。。。1/2寸DN150204分管3/4寸DN20C256分管1寸"DN25C321寸管2寸DN50-@632寸管3寸“DN80C903寸-管管道尺寸规格表规格表公称通径外径(MM)屮心距至端面的距离理论重最KG/PCSDNODFB5S10S20S40S80S120S151/21821.338160.040.050.050.060.0590.0630.060.080.080.10203/42526.7380.060.060.070.080.080.090.090.

2、100.130.130.132513233.438160.080.080.120.130.1350.140.140.180.19321.1/43842.248200.110.130.180.210.210.240.230.260.310.35401.1/24548.357240.160.170.260.280.300.320.330.350.440.485025760.376320.280.290.450.470.590.610.620.660.950.90652.1/27376.195400.550.570

3、.800.830.961.11.251.311.721.8080389114470.801.171.62.062.86903.1/2101.6133551.081.572.12.743.821081004114.3152631.311.391.012.032.652.873.543.765.135.466.276.681332.682.823.243.454.815.126.166.548.719.2511.312.01255141.3190792.873.415.066.479.1411.9139.7159

4、3.854.104.694.966.977.389.5610.114.415.318.619.81506168.3229954.034.877.249.9515.019.4165.22192008216.33051267.157.059.659.5316.115.920.420.131.030.543.142.527325010267.438112813.713.216.716.325.824.636.235.457.256.279.777.630012325323.9318.545718923.022.62

5、2.326.126.025.536.136.035.355.755.556.195.294.892.713313313235014377355.653322130.829.036.934.760.256.783.178.214713820218940016426406.461025341.839.947.745.578.074.312211621120128026745018478457.268628452.950.560.357.787.783.8175167301287422403500205295087

6、6231674.271.384.981.51461402422324143985775525502255983834786.398.81693076946002463061091437912211814113720920237936765763895191865026660991410315700287207111067442371366750307621143473214264421800328208131219506484480663657850348641295537542742900369209141

7、372568612608914908法兰平焊法兰产品概述平焊法兰盘的生产工艺采用亚氧炉开料,整体锻打或者成品锻压切削成型，经过高精度数控车床车削、数控摇臂钻钻孔加式而成，外形美观，表面平整光滑，耐酸碱，抗防腐，质感性能强。详细介绍平焊法兰是用于碳索钢管道连接，公称圧力不超过2.5MPa的，平焊法兰的连接形式包括单面焊接和双面螺母连接，焊接时只需单面焊接不需要焊接管道和法兰连接的内口,一般用于低、屮压管道。平焊法兰外形美观，表面平整光滑，耐酸碱，抗防腐，质感性能强，生产工艺采用亚氧炉开料，整体锻打或者成品锻压切

8、削成瑕，经过高粘度数控车床车削、数控摇臂钻钻孔加式而成。平焊法兰的密封面可以制成光滑式，WI凸式和样槽式三种。光滑式法兰盘的应用最故大,多用于介质条件比较缓和的情况下，如低压非净化压缩空气、低压循环水。平焊法兰适用于压力p<4MPa的场合。法兰密封面的型式有三种：平面型密封面，适用于压力不高、介质无毒的场合；凹凸密封面，适用于压力稍高的场合；橢槽密封曲,适用于易燃、易爆、有毒介质及压力较高的场合。北