详细介绍 真空管道连接件 DND1D2L标准10161220/70GB4982-85ISO-KF16201620/7025302620/7040454120/7050545020/70 ■DNLL1标准164040GB4982-85ISO-KF255050406565507070 ■DNLA标准168040GB4982-85ISO-KF251005040130655014070 ■DNA标准1040GB4982-85ISO-KF165025654070 CONSTRUCTION FIGHTS(mm) ■DNBB1HE标准10/1645611622GB4982-85ISO-KF20/25557217.53232/407090184750951232561 ■DNDN1AA1标准25163535GB4982-85ISO-KF4016404550165050 ■DNDN1标准2516GB4982-85ISO-KF4016402550255040 ■DNL标准162505007501000GB4982-85ISO-KF252505007501000402505007501000502505007501000 ■DNL标准1680GB4982-85ISO-KF2510040130 ■DNdH标准10305GB4982-85ISO-KF16305254054055550756