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1、平 焊 法 兰 尺 寸 一 览 表 （GD87） 类别公称压力公称通径外径Do内径D孔中心距D1凸面直径D2厚度b孔径d孔数n螺栓长（mm）Pn0.25Pn0.6Pn1.0Pn1.6Pn2.5Pn0.25-2.5Pn0.25Pn0.6Pn1.0Pn1.6Pn2.5Pn0.25Pn0.6Pn1.0Pn1.6Pn2.5Pn0.25Pn0.6Pn1.0Pn1.6Pn2.5Pn0.25Pn0.6Pn1.0Pn1.6Pn2.5Pn0.25Pn0.6Pn1.0Pn1.6Pn2.5Pn0.25Pn0.6Pn1.0Pn1.6Pn2.510757590909015505060606032324040401212
2、141414111114141444444404045454515808095959519555565656540404545451212141414111114141444444404045454520909010510510526656575757550505555551414161616111114141444444404050505025100100115115115337575858585606065656514141616161111141414444444040505050321201201401401403990901001001007070787878161618181814
3、141818184444450506060604013013015015015046100100110110110808085858516161818181414181818444445050606060501401401651651655811011012512512590901001001001616202020141418181844444505060606070160160185185185771301301451451451101101201201201616202022141418181844448505060606580190190200200200901501501601601
4、601251251351351351818202024181818181844888606060607010021021023023023010917017018018019014514515515516018182222261818181822448886060656575125240240250250270134200200210210220175175185185188202022222818181818268888860606565851502652652852853001602252252402402502002002102102182222242430181822222688888
5、656565658517529529531531533019525525527027028023023024024024822222426321818222226888812656575759020032032034034036022128028029529531025525526526527822222426321818222226888121265657575902253453453703703952473053053253253402802802952953022424242934181822223088812127070758010025037537539540542527533533
6、535035537031031032032033524242629351818222630121212121270708085100300440440445460485327395395400410430362362368375390242428323822222226301212121216757585901103504904905055205553794454454604704904124124284354482626303542222222263312121616168080901001204005405405655806204294954955155255504624624824855
7、0528283238462222263036161616161685851001101304505955956156406704815505505655856005185185325455553030354250222226303616162020209090100120140500645645670715730532600600620650660568568585608610323238465622222633392020202020100100110130150600755755780840845634705705725770770670670685718718343442526826263036422020222020100100120140180700860860895724810810840775775800363642262630242424110110120 8009759751015824920920950880880905383842303033242424110110130 编制：汽机工程处SXZ
