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1、蝶阀尺寸表单位：mm序号内径外径厚度1DN250320702DN200265603DN150210554DN125180555DN100155506DN80135507DN65120458DN509DN40UPVC法兰尺寸表序号内径外径长度（承接）厚度1250395220034030316028580（75）30412525025511022025690200257751852086316520950150单位：mmGB/T 1724法兰标准公称通经DN连接尺寸密封面法兰厚度C法兰颈法兰外经D螺栓孔中心圆直径K螺栓孔径L螺栓dfNR数量n螺纹规格109060144M12412142831595
2、65144M12462143232010575144M12562164042511585144M126521650432140100184M167621860540150110184M168421870550165125184M169922084665185145184M16118220104680200160188M161322201206100220180188M161562221408125250210188M201842221708150285240188M2021122419010200340295228M20266224246102503953502212M20319226298103004454002212M20370226348103505054602216M24429226408124005655152216M24480226456124506155652220M24530228502125006706202620M27582228559126007807253020M27682234658127008958403024M307945347721280010159503324M3090153687612900111510503328M331001538976121000123011603628M361112538108012伸缩节
