法兰规格尺寸表).doc

常用法兰规格尺寸表常用法兰规格尺寸表(国标）国标）GB9119，2—88GB9119，2—8810kg=1.0MPa16kg=1.6MPa in公称通径 法兰外径螺栓孔距螺栓直径螺栓孔数法兰厚度公称通径 法兰外径螺栓孔距螺栓直径螺栓孔数法兰厚度3/8DN10506014414DN109060144141/2DN15596514414DN159565144143/4DN201057514416DN2010575144161DN251158514416DN25115851441611/4DN3214010018418DN321401001841811/2DN4015011018418DN40150110184182DN5016512518420DN501651251842021/2DN6518514518420DN65185145188203DN8020016018820DN802001601882031/2DN10022018018822DN100220180188224DN12525021018822DN125250210188225DN15028524022824DN150285240228246DN20034029522824DN200340295228268DN250395350221226DN25040535526122910DN300445400221228DN30046041026123212DN350505460221630DN35052047026163514DN400565515261632DN40058052530163816DN450615565262035DN45064058530204218DN500670620262038DN50071565033204620DN600780725262042DN600840770362052 单头（普通）螺栓长度：两片法兰厚度＋垫床厚度（一般加 5mm）＋螺帽厚度＋多余的 2-3 扣+5-6mm（需要考虑螺栓平垫厚度）就行了。

双头螺栓加螺帽 厚度时要加两个螺帽的。