国标法兰标准尺寸

PAGE/NUMPAGES中国标准法兰尺寸凸面整体铸钢管法兰  图1凸面整体铸钢管法兰 PN1.6MPa        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2159565144M1245214391242010575144M1255214441242511585144M12652144912432140/135100184M16782165612440150/145110184M16853166412450165/160125184M161003167412565185/180145184M161203189515580200/195160188M16135320110155100220/215180188M16155320130155125250/245210<,/TD>188M16185322161186150285/280240238M20210324186186<175>310270238M20240326215206200340/3352952312M20265326240206<225>3653252312M2029532626922625040535526/2512M24/M2232033029824830046041026/2512M24/M22375430348248 PN2.5MPa       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螺栓、螺柱dfNmaxSmaxR数量n螺纹Th.系列1/系列2159565144M1245216391242010575144M1255216441252511585144M12652164912532140/135100184M16782186215540150/145110184M16853187015550165/160125184M161003208015565185/180145188M1612032210118680200/195160188M16135322116186100230190238M2016032413618612527022026/258M24/M2218832816922815030025026/258M24/M22218330198248<175>33028026/2512M24/M2224833222324820036031026/2512M24/M22278334252268<225>3953403012M273023362812882504253703012M2733233630628103004854303016M273904403603010 PN4.0MPa   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螺栓、螺柱dfNmaxSmaxR数量n螺纹Th.系列1/系列2159565144M1245216391242010575144M1255216441252511585144M12652164912532140/135100184M16782186215540150/145110184M16853187015550165/160125184M161003208015565185/180145188M1612032210118680200/195160188M16135322116186100235/230190238M2016032414020612527022026/258M24/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图2凹凸面整体铸钢管法兰    mmPN4.0MPa    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2159565144M124539402416391242010575144M125550512416441252511585144M1265575824164912532140/135100184M1678656624186215540150/145110184M1685757634187015550165/160125184M16100878834208015565185/180145188M16120109110342210118680200/195160188M161351201213422116186100235/230190238M2016014915034.52414020612527022026/258M2418817517634.52816922815030025026/258M24/M2221820320434.530198248<175>3502953012M2725823323434.53423128102003753203012M2728225926034.5382562810<225>4153553412M3031528628734.5402853010250450/4453853412M3034531231334.5423143210300515/5104503416M3040836336444.5463683412 PN6.3MPa        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21510575144M1255394024184515420130/12590184M1668505124205216525140/135100184M1678575824226118532155/150110234M2082656624246818540170/165125234M2095757634248020550180/175135234M20105878834269020565205/200160238M20130109110342811123680215/210170238M20140120121343012824610025020026/258M24/M2216814915034.532152266125295240308M2720217517634.536181288150345/340280348M3024020320434.538210308<175>3703103412M3027023323434.542239321020040534536/3412M33/M3030025926034.5442683410<225>43037036/3412M33/M3032528628734.546301381025047040036/4112M33/M3635231231334.548326381030053046036/4116M33/M3641236336444.5543844212  PN10.0MPa        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21510575144M1255394024204515420130/12590184M1668505124225417425140/135100184M1678575824246118432155/150110234M2082656624246818440170/165125234M209575763426802045019514526/254,M24/M2211287883428942246522017026/258M24/M2213810911034321152558023018026/258M24/M221481201213434132265100265210308M2717214915034.538160305125315/310250348M3021017517634.542189326150355/3502903412M3025020320434.546222366<175>3803203412M3028023323434.54825138820043036036/4112M33/M3631225926034.554284428<225>4704004112M3635228628734.556313448250505/5004304112M3638231231334.56034648830058550042/4816M39/M4244236336444.5704085410 PN16.0MPa       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dX系列2Y系列2ff1、f2NmaxSmaxR数量n螺纹Th.系列1/系列21511075184M165239402424491742013090234M2062505124265819425140100234M2072575824286520432165115254M2285656624307622540175125274M2492757634328824550215165258M221328788343610226565245190308M27152109110344413133880260205308M271681201213446148348100300240348M3020014915034.548172368125355285418M3623817517634.56021344101503903184112M3627020320434.5662464810<175>4603804812M4232523323434.57428756102004804004812M4234525926034.5783165810<225>5454505412M4839028628734.58234560102505804855412M4842531231334.58837864103006655705416M4851036336444.51004527610 PN20.0MPa         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21512082234M205527282526511852013090234M2062343525286020525150102254M2272414225306721532160115254M2285495025327823540170124274M2490555635349025550210160258M221286970354010829565260203308M271659697354813736880290230348M301901151163554160408100360292418M3624513713836662045281253853184112M36270169170367623756101504403604812M4230518919036822706010<175>4753944812M42340213214368430163102005354405412M4838024424536923407010<225>5804835812M524182672683610037776102506705725816M52508318319361104489410    注：表31～35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。