1? 法兰q接或法兰接_(d)是指由法兰、垫片及(qing)螺栓三者相互连接作Zl组?a href="http://www.necmobile.com.cn" target="_blank">密封l构的可折连接，道法兰pL道装置中配用的法兎ͼ用在讑֤上系指设备的q出口法兰?br>
(tng) (tng) (tng) 2?国际上管法兰标准的几个体p?br>
(tng) (tng) (tng) 1Q?Ƨ洲法兰体系Qd国DINQ包括苏联）(j)
(tng) (tng) (tng) a?公称压力Q?.1, 0.25, 0.6, 1.0, 1.6, 2.5, 4.0, 6.4, 10.0, 16.0, 25.0, 32.0, 40.0, Mpa
(tng) (tng) (tng) b?公算通径Q?5~600mm
(tng) (tng) (tng) c?法兰的结构型式：(x)q焊板式、^焊环村֥式、卷Ҏ(gu)套式、对焊卷Ҏ(gu)套式、对焊环村֥式、对焊式、带颈螺U连接式、整体式?qing)法兰?br>
(tng) (tng) (tng) d?a href="http://www.necmobile.com.cn" target="_blank"> 法兰密封?/a>有：(x)q面、凹面、凹凔R、榫槽面、橡胶环q接面、透镜面及(qing)膜片焊接?br>
(tng) (tng) (tng) e?苏联?980q发布的OCT法兰同录标准与德国DIN标准怼Q不再追q?br>
(tng) (tng) (tng) 2Q?洲法兰体系Q美国ANSI B16.5《钢制管法兰?qing)法兰管件?br>
(tng) (tng) (tng) a?公称压力Q?50psiQ?.0MpaQ，300psiQ?.0MpaQ，400psiQ?.8MpaQ，600psiQ?0.0MpaQ，900psiQ?5.0MpaQ，1500psiQ?5.0MpaQ，2500psiQ?2.0MpaQ，
(tng) (tng) (tng) b?公算通径Q?~4000mm
(tng) (tng) (tng) c?法兰的结构型式：(x)条焊、承插焊、螺U连接、松套、对焊及(qing)法兰?br>
(tng) (tng) (tng) d?法兰密封面：(x)凚w、凹凔R、榫槽面、金属环q接?br>
(tng) (tng) (tng) 3Q?日本JIS法兎ͼ(x)在石油化工装|中一般仅用于公用工程Q在国际上媄(jing)响较?yu)，在国际上没有形成独立体系?br>
(tng) (tng) (tng) 3?我国钢制法兰国家标准体pGB
(tng) (tng) (tng) 1Q?公称压力Q?.25Mpa~42.0Mpa
(tng) (tng) (tng) a?pd1QPN1.0, PN1.6, PN2.0, PN5.0, PN10.0, PN15.0, PN25.0, PN42Q主pdQ?br>
(tng) (tng) (tng) b?pd2QPN0.25, PN0.6, PN2.5, PN4.0
(tng) (tng) (tng) 其中PN0.25QPN0.6QPN1.0QPN1.6QPN2.5QPN4.0?个等U的法兰寸pd于以德国法兰Z表的Ƨ洲法兰体系Q其余ؓ(f)国法兰Z表的洲法兰体系?br>
(tng) (tng) (tng) 在GB标准中，从属于欧z法Cpȝ公称压力U最大的?MpaQ从属于洲法兰体系的公U压力最大ؓ(f)42Mpa?br>
(tng) (tng) (tng) 2Q?公称通径Q?0mm~4000mm
(tng) (tng) (tng) 3Q?法兰?a href="http://www.necmobile.com.cn" target="_blank">l构形式Q?br>
(tng) (tng) (tng) 整体法兰
(tng) (tng) (tng) 单元法兰
(tng) (tng) (tng) a、螺UҎ(gu)?br>
(tng) (tng) (tng) b、焊接法?对焊法兰
(tng) (tng) (tng) 带颈q焊法兰 带颈承插焊法?板式q焊法兰
(tng) (tng) (tng) c、松套法?对焊环松套带颈法?对焊环松套板式法?q焊环松套板式法?板式过村֥法兰
(tng) (tng) (tng) d、法兰盖Q盲孔法兎ͼ(j)
(tng) (tng) (tng) 4Q?法兰密封面：(x)q面、凹面、凹凔R、榫槽面、环q接?br>
(tng) (tng) (tng) 二?仪表常用的管法兰标准体系
(tng) (tng) (tng) 1?DIN标准
(tng) (tng) (tng) 1Q?常用压力{QPN6QPN10QPN16QPN25QPN40QPN64QPN100QPN160QPN250
(tng) (tng) (tng) 2Q?法兰密封面：(x) raised face DIN2526C H面法兰 (tng) grooued acc. DIN2512N 榫槽?br>
(tng) (tng) (tng) 2?ANSI标准
(tng) (tng) (tng) 1Q?常用压力{QCL150QCL300QCL600QCL900QCL1500
(tng) (tng) (tng) 2Q?法兰密封面：(x)ANSI B 16.5 RF flanges H面法兰
(tng) (tng) (tng) 3?JIS标准Q不常用
(tng) (tng) (tng) 1Q?常用压力{Q?0KQ?0K
(tng) (tng) (tng) 三?如何向用h荐配?a href="http://www.necmobile.com.cn" target="_blank">法兰标准?qing)管道标?br>
(tng) (tng) (tng) 1?用户要求提供配对法兰刉图Q?br>
(tng) (tng) (tng) 例：(x)某用户选一涡街量计，其型号ؓ(f)Q?0FS80-E0A00A1B100 EQPN40 DIN2501Qraised face DIN2526C
(tng) (tng) (tng) 用户要求提供配对法兰刉图
(tng) (tng) (tng) 解决办法Q此涉及(qing)三个标准图，DIN2501为母法兰QDN2526C为法兰面的型式，
(tng) (tng) (tng) 凔RQ故扑ֈDIN2635。DIN2635是以DIN2501为母法兰标准的法兰面采取DIN2526C的配Ҏ(gu)兰标准，此图传真给用户卛_?br>
(tng) (tng) (tng) 2?在涡街流量计选型Ӟ选用ANSI标准Ӟ需注意S(chng)ch80QSch40的差别，q与所配的道标准盔RQ即QA表选Sch80Q管道也选Sch80Q以免管道内径与仪表内径之间形成一个突出?br>
(tng) (tng) (tng) 配管寸pdQ英制管、公制管
(tng) (tng) (tng) 英制：(x)国际上通用的配系?br>
(tng) (tng) (tng) 公制：(x)数十q来国内化工部门?qing)其它工业部门广泛用的钢管外径寸pd
(tng) (tng) (tng) 配管pd
(tng) (tng) (tng) 法兰标?br>
(tng) (tng) (tng) 压力{情况
(tng) (tng) (tng) PN0.25?.6?.0?.6?.5?.0Mpa为d国管法兰pd
(tng) (tng) (tng) GB9112~9125-88
(tng) (tng) (tng) PN2.0?.0?0.0?5.0?5.0?2.0Mpa为美国管法兰pd
(tng) (tng) (tng) 英制?br>
(tng) (tng) (tng) SHJ406-89 《中国石化d司工E徏设标准?br>
(tng) (tng) (tng) PN2.0?.0?.8?0.0?5.0?5.0?2.0Mpa为美国管法兰pd
(tng) (tng) (tng) 公制?br>
(tng) (tng) (tng) HG5003~5028-58 JB75~86-59
(tng) (tng) (tng) PN0.25?.6?.0?.6?.5?.0?.4?0.0?6.0?0.0Mpag德国法兰的苏联五十q代法兰系列?/p>
转蝲h明来源中德密编?/p>
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