国标法兰标准尺寸.docx

1、国标法兰标准尺寸中国JB标准法兰尺寸凸面整体铸钢管法兰(JB/图 1 凸面整体铸钢管法兰mm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dfNmaxSmaxR数量n螺纹Th.系列1/系列2159565144M1245214391242010575144M1255214441242511585144M12652144912432140/135100184M16782165612440150/145110184M16853166412450165/160125184M161003167412565185/18014

2、5184M161203189515580200/195160188M16135320110155100220/215180188M16155320130155125250/245210 188M16185322161186150285/280240238M20210324186186(175)310270238M20240326215206200340/3352952312M20265326240206(225)3653252312M2029532626922625040535526/2512M24/M2232033029824830046041026/2512M24/M22375430348

3、248mm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2螺栓、螺柱dfNmaxSmaxR数量n螺纹Th.系列1/系列2159565144M1245216391242010575144M1255216441252511585144M12652164912532140/135100184M16782186215540150/145110184M16853187015550165/160125184M161003208015565185/180145188M1612032210118680200/195160188M16135

4、322116186100230190238M2016032413618612527022026/258M24/M2218832816922815030025026/258M24/M22218330198248(175)33028026/2512M24/M2224833222324820036031026/2512M24/M22278334252268(225)3953403012M273023362812882504253703012M2733233630628103004854303016M273904403603010 mm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列

5、1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2螺栓、螺柱dfNmaxSmaxR数量n螺纹Th.系列1/系列2159565144M1245216391242010575144M1255216441252511585144M12652164912532140/135100184M16782186215540150/145110184M16853187015550165/160125184M161003208015565185/180145188M1612032210118680200/195160188M16135322116186100235/230190238M201603241402

6、0612527022026/258M24/M2218832816922815030025026/258M24/M22218330198248(175)3502953012M2725833423128102003753203012M272823382562810(225)4153553412M303153402853010250450/4453853412M303453423143210300515/5104503416M304084463683412注：系列1法兰连接尺寸与国标及德国法兰标准尺寸互换；系列2尺寸与原机标准法兰尺寸互换；新产品设计应优先采用系列1尺寸。2.凹凸面整体铸钢管法兰(J

7、B/图 2 凹凸面整体铸钢管法兰 mmmm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dX系列1/系列2Y系列1/ 系列2ff1f2NmaxSmaxR数量n螺纹Th.系列1/系列2159565144M124539402416391242010575144M125550512416441252511585144M1265575824164912532140/135100184M1678656624186215540150/145110184M1685757634187015550165/160125184M161

8、00878834208015565185/180145188M16120109110342210118680200/195160188M161351201213422116186100235/230190238M2016014915032414020612527022026/258M2418817517632816922815030025026/258M24/M22218203204330198248(175)3502953012M27258 23323433423128102003753203012M272822592603382562810(225)4153553412M303152862

9、873402853010250450/4453853412M303453123133423143210300515/5104503416M304083633644463683412mm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dX系列1/系列2Y系列1/ 系列2ff1、f2NmaxSmaxR数量n螺纹Th.系列1/系列21510575144M1255394024184515420130/12590184M1668505124205216525140/135100184M16785758242261185321

10、55/150110234M2082656624246818540170/165125234M2095757634248020550180/175135234M20105878834269020565205/200160238M20130109110342811123680215/210170238M20140120121343012824610025020026/258M24/M22168149150332152266125295240308M27202175176336181288150345/340280348M30240203204338210308(175)3703103412M302

11、70233234342239321020040534536/3412M33/M303002592603442683410(225)43037036/3412M33/M30325286287346301381025047040036/4112M33/M36352312313348326381030053046036/4116M33/M364123633644543844212mm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dX系列1/系列2Y系列1/ 系列2ff1、f2NmaxSmaxR数量n螺纹Th.系列1/系

12、列21510575144M1255394024204515420130/12590184M1668505124225417425140/135100184M1678575824246118432155/150110234M2082656624246818440170/165125234M209575763426802045019514526/254, M24/M2211287883428942246522017026/258M24/M2213810911034321152558023018026/258M24/M221481201213434132265100265210308M2717214

13、9150338160305125315/310250348M30210175176342189326150355/3502903412M30250203204346222366(175)3803203412M3028023323434825138820043036036/4112M33/M36312259260354284428(225)4704004112M36352286287356313448250505/5004304112M3638231231336034648830058550042/4816M39/M424423633644704085410mm公称通径DN连 接 尺 寸密封面尺

14、寸法兰厚度C法兰颈法兰外径D系列1/系列2螺栓孔中心圆直径K螺栓孔直径L系列1/系列2双头螺柱dX系列2Y系列2ff1、f2NmaxSmaxR数量n螺纹Th.系列1/系列21511075184M165239402424491742013090234M2062505124265819425140100234M2072575824286520432165115254M2285656624307622540175125274M2492757634328824550215165258M221328788343610226565245190308M2715210911034441313388026020

15、5308M271681201213446148348100300240348M30200149150348172368125355285418M3623817517636021344101503903184112M362702032043662464810(175)4603804812M4232523323437428756102004804004812M423452592603783165810(225)5454505412M4839028628738234560102505804855412M4842531231338837864103006655705416M48510363364410

16、04527610mm公称通径DN连 接 尺 寸密封面尺寸法兰厚度C法兰颈法兰外径D系列2螺栓孔中心圆直径K螺栓孔直径L系列2双头螺柱dX系列2Y系列2ff1、f2NmaxSmaxR数量n螺纹Th.系列1/系列21512082234M205527282526511852013090234M2062343525286020525150102254M2272414225306721532160115254M2285495025327823540170124274M2490555635349025550210160258M221286970354010829565260203308M271659697

17、354813736880290230348M301901151163554160408100360292418M3624513713836662045281253853184112M36270169170367623756101504403604812M4230518919036822706010(175)4753944812M42340213214368430163102005354405412M4838024424536923407010(225)5804835812M524182672683610037776102506705725816M52508318319361104489410注：表3135中系列1法兰连接尺寸与国标及德国法兰标准尺寸互换，系列2尺寸与原机标法兰尺寸互换；新产品设计优先采用系列1尺寸。