JIS日标法兰尺寸标准

1、法兰尺寸JIS 法兰(JIS B 2238、JIS B 2239 )JIS 5K单位：mm口径DN适用 的钢管外 径法兰外径D法兰各部分尺寸螺栓孔螺栓 的螺纹尺寸bf直径D2中心圆直径D1数量z直径d灰铸铁以 外灰铸 铁1017.37591213955412M101521.78091214460412M102027.285101414965412M102534.095101415975412M103242.7115121627090415M124048.6120121627595415M125060.51301416285105415M126576128

2、089.118014182121145419M16100114.320016202141165819M16125139.823516202176200819M16150165.226518222206230819M16200216.332020242252280823M20250267.4385222623173451223M20300318.5430222833603901223M20350355.6480243034034351225M22400406.4540243034634951625M22450457.2605243035235551625M22500508.06552432357

3、36052025M22600609.6770263236807152027M24JIS 10K单位：mm口径DN适用的钢管 外径法兰外径D法兰各部分尺寸螺栓孔螺 栓 的 螺 纹 尺 寸薄型法兰bf直 径D2中 心 圆直 径D1数量z直径d灰铸铁螺 栓 的 孔 径螺 栓 的 尺 寸灰铸铁 以外灰铸铁1017.390121414665415M121212M101521.795121615170415M121212M102027.2100141815675415M121412M102534.0125141816790419M161615M123242.71351620276100419M161815

4、M124048.61401620281105419M161815M125060.51551620296120419M161815M126576.317518222116140419M161815M128089.118518222126150819M161815M12100114.321018242151175819M162015M12125139.825020242182210823M202219M16150165.228022262212240823M202219M16200216.3330222622622901223M202419M16250267.4400243023243551225

5、M222623M20300318.5445243233684001625M222823M20350355.6490263434134451625M222823M20400406.4560283634755101627M243025M22450457.2620303835305652027M24一一一500508.0675304035856202027M24一一一600609.6795324436907302433M30一一一JIS 法兰(JIS B 2238、JIS B 2239 )JIS 16K单位：mm口径DN适用的钢管外径法兰外径D法兰各部分尺寸螺栓孔螺栓 的螺 纹尺 寸bf直径D2中心

6、圆直径D1数量z直径d灰铸铁以外灰铸铁1017.39012-14665415M121521.79512-15170415M122027.210014-15675415M122534.012514-16790419M163242.713516-276100419M164048.614016-281105419M165060.51551620296120819M166576.317518222116140819M168089.120020242132160823M20100114.322522262160185823M20125139.827022262195225825M22150165.230

7、5242822302601225M22200216.3350263022753051225M22250267.4430283423453801227M24300318.5480303633954301627M24350355.6540343834404801633M30X3400406.4605384234955401633M30X3450457.2675404635606052033M30X3500508.0730425036156602033M30X3600609.6845465837207702439M36X3JIS 20K单位：mm口径DN适用的钢管外径法兰外径D法兰各部分尺寸螺栓孔螺

8、栓 的螺 纹尺 寸bf直径D2中心圆直径D1数量z直径d灰铸铁以外灰铸铁1017.390141614665415M121521.795141615170415M122027.2100161815675415M122534.0125162016790419M163242.71351820276100419M164048.61401822281105419M165060.51551822296120819M166576.317520242116140819M168089.120022262132160823M20100114.322524282160185823M20125139.82702630

9、2195225825M22150165.2305283222302601225M22200216.3350303422753051225M22250267.4430343823453801227M24300318.5480364033954301627M24350355.6540404434404801633M30X3400406.4605465034955401633M30X3450457.2675485435606052033M30X3500508.0730505836156602033M30X3600609.6845546637207702439M36X3中美日承插孔尺寸和螺纹端尺寸SW

10、NPT(Rc)规格承插孔尺寸螺纹端尺寸T (in)中国JB美国ANSI日本JIS中国GB日本JIS美国ANSIDNNPS(in )SL1SL1SL1Rc和PT牙形角55NPTX 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?50261.01661.1

11、15.961.115.92说明：“Rc、PT和NPT分别是中国、日本和美国密封锥管螺纹代号JIS 10K、RR FF?单位：mm，称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接部分凸出身度螺栓孔数量与直径螺栓直径DNDD1D2D3t*fn-dM20100755819141814-151225125907025141814-1916401401058538162024-19165015512010051162024-19166517514012061182224-19168018515013076182228-1916100210175155102182428-19161252502

12、10185125202428-2320150280240215152222628-2320200330290265204222628-23202504003553252542430212-25223004154003753052432316-2522JIS 16K、RR FF?单位：mm，称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接部分凸出身度螺栓孔数量与直径螺栓直径DNDD1D2D3t*fn-dM20100755819141814-151225125607025141814-1916401401058538162024-19165015512010051162028-19166

13、517514012064182228-19168020016013576202428-2320100225185160102222628-23201252702251951252226212-25221503052602301522428212-25222003503052752042630212-25222504303803452542834212-27243004804303953053036316-2724JIS 20K、RR FF?单位：mm,称通径外径,栓孔中 上圆直径连接凸出部分直径内径法兰厚度连接部分凸出高度螺栓孔数量与直径螺栓直径DNDD1D2D3t*fn-dM20100755

14、81916 1814-15122512590702516 2014-191640140105853818 2224-1916501551201005118 2228-1916651751401206420 2428-1916802001601357622 2628-232010022518516010224 2828-232012527022519512526 30212-252215030526023015228 32212-252220035030527520430 34212-252225043038034525434 38212-272430048043039530536 40316-

15、2724注：t值中较小值为钢及可锻铸铁法兰；较大值为铸铁法兰JIS 30K、RR FF?单位：mm，称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接部分凸出身度螺栓孔数量与直径螺栓直径DNDD1D2D3t*fn-dM201208560191814-1916251309570252014-19164016012090382224-232050165130105512228-191665200160130642628-232080210170140762828-23201002401951601023228-25221252752301951253628-2522150325275235

16、15238212-272420037032028020442212-272425045039034525448212-333030051545040530552316-3930JIS 40K、RR FF?单位：mm，称通径外径,栓孔中 上圆直径连接凸出部分直径内径法兰厚度连接部分凸出身度螺栓孔数量与直径螺栓直径DNDD1D2D3t*fn-dM201208560192014-1916251309570252214-19164016012090382424-232050165130105512628-191665200160130643028-232080210170140763228-23201002502051651023628-25221253002502001254028-272415035529524015244212-333020040534529020050212-3330250475440355247.556212-3330300540470440298.560316-3936JIS 63K、RR FF?单位：mm，称通径外径螺栓孔中心圆直径连接凸出部分直径内径法兰厚度连接部分凸出高度螺栓孔数量与直径螺栓直径DNDD1D2