1、法蘭尺寸JIS法蘭(JISB2238、JISB2239)JIS5K單位：mm口徑DN適用的鋼管外徑法蘭外徑D法蘭各部分尺寸螺栓孔螺栓的螺紋尺寸bf直彳仝D2中心圓直徑D1數量z直彳仝d灰鑄鐵以外灰鑄鐵1017.37591213955412M101521.78091214460412M102027.285101414965412M102534.095101415975412M103242.7115121627090415M124048.6120121627595415M125060.51301416285105415M126576128089.118014

2、182121145419M16100114.320016202141165819M16125139.823516202176200819M16150165.226518222206230819M16200216.332020242252280823M20250267.4385222623173451223M20300318.5430222833603901223M20350355.6480243034034351225M22400406.4540243034634951625M22450457.2605243035235551625M22500508.0655243235736052025M2

3、2600609.6770263236807152027M24JIS10K單位：mm口徑DN適用的鋼管外徑法蘭外徑D法蘭各部分尺寸螺栓孔螺栓的螺紋尺寸薄型法蘭bf直徑D2中心圓直彳仝D1數量z直徑d灰鑄鐵螺栓的孔徑螺栓的尺寸灰鑄鐵以外灰鑄鐵1017.390121414665415M121212M101521.795121615170415M121212M102027.2100141815675415M121412M102534.0125141816790419M161615M123242.71351620276100419M161815M124048.61401620281105419M1618

4、15M125060.51551620296120419M161815M126576.317518222116140419M161815M128089.118518222126150819M161815M12100114.321018242151175819M162015M12125139.825020242182210823M202219M16150165.228022262212240823M202219M16200216.3330222622622901223M202419M16250267.4400243023243551225M222623M20300318.5445243233684

5、001625M222823M20350355.6490263434134451625M222823M20400406.4560283634755101627M243025M22450457.2620303835305652027M24一一一500508.0675304035856202027M24-600609.6795324436907302433M30JIS法蘭(JISB2238、JISB2239)JIS16K單位：mm口徑DN適用的鋼管外徑法蘭外徑D法蘭各部分尺寸螺栓孔螺栓的螺紋尺寸bf直彳仝D2中心圓直徑D1數量z直彳仝d灰鑄鐵以外灰鑄鐵1017.39012-14665415M1215

6、21.79512-15170415M122027.210014-15675415M122534.012514-16790419M163242.713516-276100419M164048.614016-281105419M165060.51551620296120819M166576.317518222116140819M168089.120020242132160823M20100114.322522262160185823M20125139.827022262195225825M22150165.2305242822302601225M22200216.33502630227530512

7、25M22250267.4430283423453801227M24300318.5480303633954301627M24350355.6540343834404801633M30X3400406.4605384234955401633M30X3450457.2675404635606052033M30X3500508.0730425036156602033M30X3600609.6845465837207702439M36X3JIS20K單位：mm口徑DN適用的鋼管外徑法蘭外徑D法蘭各部分尺寸螺栓孔螺栓的螺紋尺寸bf直彳仝D2中心圓直徑D1數量z直彳仝d灰鑄鐵以外灰鑄鐵1017.3901

8、41614665415M121521.795141615170415M122027.2100161815675415M122534.0125162016790419M163242.71351820276100419M164048.61401822281105419M165060.51551822296120819M166576.317520242116140819M168089.120022262132160823M20100114.322524282160185823M20125139.827026302195225825M22150165.2305283222302601225M22200

9、216.3350303422753051225M22250267.4430343823453801227M24300318.5480364033954301627M24350355.6540404434404801633M30X3400406.4605465034955401633M30X3450457.2675485435606052033M30X3500508.0730505836156602033M30X3600609.6845546637207702439M36X3中美日承插孔尺寸和螺紋端尺寸TL1LrZmi4SWNPT(Rc)規格承插孔尺寸螺紋端尺寸T(in)中國JB美國ANSI日本

10、JIS中國GB日本JIS美國ANSIDNNPS(in)SL1SL1SL1Rc和PT牙形角55NPT牙形角6081/414.51014.19.614.39.61/4103/818.01017.69.617.99.63/8151/222.51021.89.622.29.61/2203/428.51127.112.727.712.73/425134.51233.812.734.512.71321?43.01542.612.743.212.71?401?49.01548.712.749.112.71?50261.01661.115.961.115.92說明：“Rc、PT和NPT分別是中國、日本和美國密

11、封錐管螺紋代號。JIS10K、RF、FF單位：mm公稱通徑外徑螺栓孔中心圓直徑連接凸出部分直徑內徑法蘭厚度連接部分凸出高度螺栓孔數量與直徑螺栓直徑DNDD1D2D3t*fn-dM20100755819141814-151225125907025141814-1916401401058538162024-19165015512010051162024-19166517514012061182224-19168018515013076182228-1916100210175155102182428-1916125250210185125202428-232015028024021515222262

12、8-2320200330290265204222628-23202504003553252542430212-25223004154003753052432316-2522JIS16K、RF、FF單位：mm公稱通徑外徑螺栓孔中心圓直徑連接凸出部分直徑內徑法蘭厚度連接部分凸出高度螺栓孔數量與直徑螺栓直徑DNDD1D2D3t*fn-dM20100755819141814-151225125607025141814-1916401401058538162024-19165015512010051162028-19166517514012064182228-1916802001601357620242

13、8-2320100225185160102222628-23201252702251951252226212-25221503052602301522428212-25222003503052752042630212-25222504303803452542834212-27243004804303953053036316-2724JIS20K、RF、FF單位：mm公稱通徑外徑螺栓孔中心圓直徑連接凸出部分直徑內徑法蘭厚度連接部分凸出高度螺栓孔數量與直徑螺栓直徑DNDD1D2D3t*fn-dM20100755819161814-151225125907025162014-191640140105

14、8538182224-19165015512010051182228-19166517514012064202428-19168020016013576222628-2320100225185160102242828-23201252702251951252630212-25221503052602301522832212-25222003503052752043034212-25222504303803452543438212-27243004804303953053640316-2724注：t值中較小值為鋼及可鍛鑄鐵法蘭；較大值為鑄鐵法蘭。JIS30K、RF、FF單位：mm公稱通徑外徑螺栓

15、孔中心圓直徑連接凸出部分直徑內徑法蘭厚度連接部分凸出高度螺栓孔數量與直徑螺栓直徑DNDD1D2D3t*fn-dM201208560191814-1916251309570252014-19164016012090382224-232050165130105512228-191665200160130642628-232080210170140762828-23201002401951601023228-25221252752301951253628-252215032527523515238212-272420037032028020442212-27242504503903452544821

16、2-333030051545040530552316-3930JIS40K、RF、FF單位：mm公稱通徑外徑螺栓孔中心圓直徑連接凸出部分直徑內徑法蘭厚度連接部分凸出高度螺栓孔數量與直徑螺栓直徑DNDD1D2D3t*fn-dM201208560192014-1916251309570252214-19164016012090382424-232050165130105512628-191665200160130643028-232080210170140763228-23201002502051651023628-25221253002502001254028-27241503552952401

17、5244212-333020040534529020050212-3330250475440355247.556212-3330300540470440298.560316-3936,稱通徑外徑螺栓孔中心圓直徑連接凸出部分直徑內徑法蘭厚度連接部分凸出高度螺栓孔數量與直徑螺栓直徑DNDD1D2D3tfn-dM25140100702227140-23204017513090353224-252250185145105483428-232065220175130573828-252280230185140734028-2522100270220165994428-27241253252652001215028-333015036530524014652212-333020042536029019058212-333025050043035523868212-393630056048541028377316-3936公稱通徑：DN是公稱通徑，公稱通徑（或叫公稱直徑）,就是各種管子與直蹌附件的通用口徑。同一公稱直徑的管子與管路附件均能相互連接，具有互換性.它不是實際意義上的管道外徑或內徑，雖然其數值跟管道內徑較為接近或相等。例如：公稱直徑為100MM勺無縫鋼管有102*5、108*5等好幾種，108為管子的外徑，5表示管