不锈钢法兰  不锈钢法兰主要是使管子与管子相互连接的零件。按结构型式分，有整体法兰、活套法兰和螺纹法兰。常见的整体法兰有平焊法兰及对焊法兰。法兰管件指带有法兰(突缘或接盘)的管件。它可由浇铸而成，也可由螺纹连接或焊接构成。法兰联接指由一对法兰、一个垫片及若干个螺栓螺母组成。垫片放在两法兰密封面之间，拧紧螺母后，垫片表面上的比压达到一定数值后产生变形，并填满密封面上凹凸不平处，使联接严密不漏。法兰联接是一种可拆联接。法兰上有孔眼，可穿螺栓，使两法兰紧连，法兰间用衬垫密封。按所联接的部件可分为容器法兰及管法兰。  HGJ46-91 PM1.0MPa（10bar）突面带径平焊法兰（mm）公称直径 管子外径 连接尺寸六角头螺栓、螺柱密封面尺寸法兰厚度法兰内径法兰颈法兰高度坡口宽度法兰理论重量法兰外径螺栓孔中心圆直径螺栓孔直径螺栓孔数量螺纹螺栓长度螺柱长度    DNADKLnThIIdf1CBNRHb（kg）10152025321418253238909510511514060657585100141414141844444M12M12M12M12M1650505555606565707080404558687822222141416161615192633393035455260334452020242424 0.570.640.931.101.614050658010045577689108150165185200220110125145160180181818181844488M16M16M16M16M166065657070808585909088102122138158333331618182020465978911107084104118140556662426303438 1.772.383.003.744.6012515020025030013315921927332525028534039544521024029535040018222222228881212M16M20M20M20M2070758085859510510511011018821226832037033334222224262613516122227632816819524629835068810104444444646 6.568.029.8912.514.035040045050060037742648053063050556561567078046051556562072522262626301616202020M20M24M24M24M27859095959511012012512513043048253258568544445262628282838143048553563640045650255965810101212125357636773 17.322.324.029.836.3 GB9115.13-88PN5.0MPa（50bar）凸面对焊钢制管法兰（mm）公称直径法兰焊端外径（管子外径） 连接尺寸密封面法兰厚度法兰高度法兰颈法兰内径法兰外径螺栓孔中心圆直径螺栓孔直径螺　栓  数量螺纹DNADKLnThdfCHNB15202521.526.533.59512012566.582.589.0162020444M14M18M1834.942.950.822214.516.017.552576238485416.021.026.532405042.048.560.513515516598.5114.5127.0202220448M18M20M1863.573.092.122219.521.022.565687064708435.041.052.5658010073.089.0114.5190210255149.0168.5200.0222222888M20M20M20104.8127.0157.222225.529.032.076798610011814662.578.0102.5125150200141.5168.5219.0280320380235.0270.0330.022222612128M20M20M24185.7215.9269.922235.037.041.59898111178206260128.0154.0202.5250300350273.0324.0355.5445520585387.5451.0514.5303333161620M27M30M30323.8381.0412.822248.051.054.0117130143321375426254.5305.0400450500600406.5457.0508.0609.5650710775915571.5628.5686.0813.03636364220242424M33M33M33M39469.9533.4584.2692.2222257.560.563.570.0146159162168483533587702由用户规定